diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_DCNDiode_tb.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_DCNDiode_tb.sch
new file mode 100644
index 00000000..8b048987
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_DCNDiode_tb.sch
@@ -0,0 +1,74 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+B 2 380 -310 1180 90 {flags=graph
+y1=-4e-4
+y2=4e-4
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=20e-9
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node="i(Vmeas)"
+color="7"
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+N 140 -30 230 -30 {
+lab=GND}
+N 140 100 140 140 {
+lab=GND}
+N 140 10 140 40 {
+lab=#net1}
+N -330 130 -330 140 {
+lab=GND}
+N -330 30 -330 70 {
+lab=in}
+N -380 30 -330 30 {
+lab=in}
+N -330 -10 -330 30 {
+lab=in}
+N -270 -10 -160 -10 {
+lab=#net2}
+C {sg13g2_DCNDiode.sym} -10 -10 0 0 {name=x1}
+C {gnd.sym} 230 -30 0 0 {name=l1 lab=GND}
+C {devices/vsource.sym} 140 70 0 0 {name=Vdd2 value=1.2}
+C {devices/gnd.sym} 140 140 0 0 {name=l2 lab=GND}
+C {devices/code_shown.sym} -30 220 0 0 {name=NGSPICE only_toplevel=true 
+value="
+.param temp=27
+.control
+save all 
+tran 5p 20n
+*meas tran tdelay TRIG v(in) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_DCNDiode_op.raw
+
+
+.endc
+"}
+C {devices/code_shown.sym} -430 220 0 0 {name=MODEL only_toplevel=true
+format="tcleval( @value )"
+value="
+.include diodes.lib
+"}
+C {devices/title.sym} -520 520 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {devices/launcher.sym} -320 -240 0 0 {name=h5
+descr="load waves Ctrl + left click" 
+tclcommand="xschem raw_read $netlist_dir/tran_DCNDiode_op.raw tran"
+}
+C {devices/gnd.sym} -330 140 0 0 {name=l7 lab=GND}
+C {devices/vsource.sym} -330 100 0 0 {name=Vin value="dc 0 ac 0 pulse(0, 1.2, 0, 100p, 100p, 2n, 4n ) "}
+C {ammeter.sym} -300 -10 3 0 {name=Vmeas savecurrent=true spice_ignore=0}
+C {lab_pin.sym} -380 30 0 0 {name=p1 sig_type=std_logic lab=in}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_Gallery_tb.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_Gallery_tb.sch
new file mode 100644
index 00000000..5f14ad05
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_Gallery_tb.sch
@@ -0,0 +1,389 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+B 2 500 -530 1300 -130 {flags=graph
+y1=-0.0
+y2=1.5
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-04
+divx=5
+subdivx=1
+
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=10
+node=core_out}
+B 2 500 -940 1300 -540 {flags=graph
+y1=0
+y2=1.5
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-04
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node=pad_res
+color=12
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+B 2 500 -1350 1300 -950 {flags=graph
+y1=0
+y2=1.5
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-04
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node=out
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=7}
+B 2 500 -100 1300 300 {flags=graph
+y1=0
+y2=1.5
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-04
+divx=5
+subdivx=1
+
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=4
+node=pad_in}
+N -880 20 -880 30 {
+lab=GND}
+N -1010 20 -1010 30 {
+lab=GND}
+N 250 -590 250 -540 {
+lab=vdd}
+N -200 80 -200 140 {
+lab=GND}
+N -170 -640 250 -640 {
+lab=vdd}
+N 250 -720 250 -640 {
+lab=vdd}
+N -240 -720 -240 -640 {
+lab=vdd}
+N -240 -720 250 -720 {
+lab=vdd}
+N -400 -550 -350 -550 {
+lab=core_out}
+N -400 -400 -400 -360 {
+lab=core_out}
+N -400 -360 -350 -360 {
+lab=core_out}
+N -400 -400 -350 -400 {
+lab=core_out}
+N -400 -440 -400 -400 {
+lab=core_out}
+N -400 -440 -350 -440 {
+lab=core_out}
+N -400 -480 -400 -440 {
+lab=core_out}
+N -400 -480 -350 -480 {
+lab=core_out}
+N -400 -520 -400 -480 {
+lab=core_out}
+N -400 -520 -350 -520 {
+lab=core_out}
+N -400 -550 -400 -520 {
+lab=core_out}
+N -380 -120 -350 -120 {
+lab=core_out}
+N -380 -160 -380 -120 {
+lab=core_out}
+N -380 -200 -350 -200 {
+lab=core_out}
+N -380 -160 -350 -160 {
+lab=core_out}
+N -380 -180 -380 -160 {
+lab=core_out}
+N -400 -180 -380 -180 {
+lab=core_out}
+N -380 -200 -380 -180 {
+lab=core_out}
+N -380 -320 -350 -320 {
+lab=oen}
+N -380 -280 -380 -240 {
+lab=oen}
+N -380 -240 -350 -240 {
+lab=oen}
+N -380 -280 -350 -280 {
+lab=oen}
+N -380 -320 -380 -280 {
+lab=oen}
+N -370 -80 -350 -80 {
+lab=oen}
+N -370 -40 -370 0 {
+lab=oen}
+N -370 0 -350 -0 {
+lab=oen}
+N -370 -40 -350 -40 {
+lab=oen}
+N -370 -60 -370 -40 {
+lab=oen}
+N -420 -240 -380 -240 {
+lab=oen}
+N -420 -60 -370 -60 {
+lab=oen}
+N -370 -80 -370 -60 {
+lab=oen}
+N -50 -550 10 -550 {
+lab=pad_in}
+N -50 -520 -10 -520 {
+lab=#net1}
+N 50 -520 90 -520 {
+lab=GND}
+N -50 -480 -10 -480 {
+lab=#net2}
+N 50 -480 80 -480 {
+lab=GND}
+N -50 -440 -20 -440 {
+lab=#net3}
+N 40 -440 80 -440 {
+lab=GND}
+N -50 -400 -20 -400 {
+lab=#net4}
+N 40 -400 70 -400 {
+lab=GND}
+N -50 -360 -20 -360 {
+lab=#net5}
+N 40 -360 90 -360 {
+lab=GND}
+N -50 -240 -10 -240 {
+lab=#net6}
+N 50 -240 80 -240 {
+lab=GND}
+N -50 -200 -10 -200 {
+lab=#net7}
+N 40 -200 70 -200 {
+lab=GND}
+N -50 -160 -20 -160 {
+lab=#net8}
+N 40 -160 90 -160 {
+lab=GND}
+N -50 -120 -20 -120 {
+lab=#net9}
+N 40 -120 80 -120 {
+lab=GND}
+N -50 -20 -10 -20 {
+lab=#net10}
+N 50 -20 80 -20 {
+lab=GND}
+N -50 10 -10 10 {
+lab=#net11}
+N 50 10 100 10 {
+lab=GND}
+N -50 -90 -20 -90 {
+lab=#net12}
+N 40 -90 140 -90 {
+lab=GND}
+N -50 -60 40 -60 {
+lab=#net13}
+N 100 -60 190 -60 {
+lab=GND}
+N -420 -150 -420 -60 {
+lab=oen}
+N -50 -320 130 -320 {
+lab=pad_res}
+N 250 -480 250 -440 {
+lab=GND}
+N -400 -320 -400 -180 {
+lab=core_out}
+N -500 -150 -420 -150 {
+lab=oen}
+N -420 -240 -420 -150 {
+lab=oen}
+N -770 20 -770 30 {
+lab=GND}
+N -1010 -80 -1010 -40 {
+lab=pad_res}
+N -770 -80 -770 -40 {
+lab=pad_in}
+N -650 -20 -650 20 {
+lab=GND}
+N -650 -110 -650 -80 {
+lab=oen}
+N -880 -140 -880 -40 {
+lab=core_out}
+N -900 -140 -880 -140 {
+lab=core_out}
+N -490 -320 -400 -320 {
+lab=core_out}
+N -400 -360 -400 -320 {
+lab=core_out}
+N 190 -280 190 -260 {
+lab=out}
+N -50 -280 190 -280 {
+lab=out}
+N 250 -590 290 -590 {
+lab=vdd}
+N 250 -640 250 -590 {
+lab=vdd}
+C {devices/code_shown.sym} -1120 -460 0 0 {name=MODEL only_toplevel=true
+format="tcleval( @value )"
+value="
+.lib cornerMOSlv.lib mos_tt
+.lib cornerMOShv.lib mos_tt
+.lib cornerRES.lib res_typ
+.include diodes.lib
+
+
+
+
+
+
+"}
+C {devices/code_shown.sym} -1030 -780 0 0 {name=NGSPICE only_toplevel=true 
+value="
+.param temp=27
+.control
+save all 
+tran 2u 100u
+meas tran tdelay TRIG v(pad_res) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_io_Gallery.raw
+
+.endc
+"}
+C {devices/gnd.sym} -880 30 0 0 {name=l2 lab=GND}
+C {devices/vsource.sym} -880 -10 0 0 {name=VinA value="dc 0 ac 0 pulse(0, 1.2, 0, 5u, 5u, 25u, 50u ) "}
+C {devices/vsource.sym} 250 -510 0 0 {name=Vdd value=1.2}
+C {devices/title.sym} -1440 180 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {devices/launcher.sym} -390 -840 0 0 {name=h5
+descr="load waves Ctrl + left click" 
+tclcommand="xschem raw_read $netlist_dir/tran_io_Gallery.raw"
+}
+C {devices/gnd.sym} -1010 30 0 0 {name=l7 lab=GND}
+C {devices/vsource.sym} -1010 -10 0 0 {name=VinB value="dc 0 ac 0 pulse(0, 1.2, 0, 5u, 5u, 25u, 50u ) "}
+C {sg13g2_Gallery.sym} -200 -280 0 0 {name=x1}
+C {devices/gnd.sym} -200 140 0 0 {name=l4 lab=GND}
+C {capa-2.sym} 20 -520 3 0 {name=C1
+m=1
+value=300f
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 90 -520 0 0 {name=l1 lab=GND}
+C {capa-2.sym} 20 -480 3 0 {name=C2
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 80 -480 0 0 {name=l8 lab=GND}
+C {capa-2.sym} 10 -440 3 0 {name=C3
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 80 -440 0 0 {name=l9 lab=GND}
+C {capa-2.sym} 10 -400 3 0 {name=C4
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 70 -400 0 0 {name=l10 lab=GND}
+C {capa-2.sym} 10 -360 3 0 {name=C5
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 90 -360 0 0 {name=l11 lab=GND}
+C {capa-2.sym} 20 -240 3 0 {name=C6
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 80 -240 0 0 {name=l12 lab=GND}
+C {capa-2.sym} 10 -200 3 0 {name=C7
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 70 -200 0 0 {name=l13 lab=GND}
+C {devices/gnd.sym} 90 -160 0 0 {name=l14 lab=GND}
+C {capa-2.sym} 10 -120 3 0 {name=C8
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 80 -120 0 0 {name=l15 lab=GND}
+C {capa-2.sym} 20 -20 3 0 {name=C9
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 80 -20 0 0 {name=l16 lab=GND}
+C {capa-2.sym} 20 10 3 0 {name=C10
+m=1
+value=1p
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 100 10 0 0 {name=l17 lab=GND}
+C {capa-2.sym} 10 -160 3 0 {name=C11
+m=1
+value=100f
+footprint=1206
+device=polarized_capacitor}
+C {capa-2.sym} 10 -90 3 0 {name=C12
+m=1
+value=100f
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 140 -90 0 0 {name=l18 lab=GND}
+C {capa-2.sym} 70 -60 3 0 {name=C13
+m=1
+value=100f
+footprint=1206
+device=polarized_capacitor}
+C {devices/gnd.sym} 190 -60 0 0 {name=l19 lab=GND}
+C {devices/gnd.sym} 250 -440 0 0 {name=l20 lab=GND}
+C {devices/gnd.sym} -770 30 0 0 {name=l3 lab=GND}
+C {devices/vsource.sym} -770 -10 0 0 {name=VinA1 value="dc 0 ac 0 pulse(0, 1.2, 0, 5u, 5u, 25u, 50u ) "}
+C {devices/vsource.sym} -650 -50 0 0 {name=Vdd1 value=1.2}
+C {devices/gnd.sym} -650 20 0 0 {name=l21 lab=GND}
+C {lab_pin.sym} -900 -140 0 0 {name=p1 sig_type=std_logic lab=core_out}
+C {lab_pin.sym} -490 -320 0 0 {name=p2 sig_type=std_logic lab=core_out}
+C {lab_pin.sym} -650 -110 0 0 {name=p3 sig_type=std_logic lab=oen}
+C {lab_pin.sym} -500 -150 0 0 {name=p4 sig_type=std_logic lab=oen}
+C {lab_pin.sym} -1010 -80 0 0 {name=p5 sig_type=std_logic lab=pad_res}
+C {lab_pin.sym} 130 -320 2 0 {name=p6 sig_type=std_logic lab=pad_res}
+C {lab_pin.sym} 10 -550 2 0 {name=p7 sig_type=std_logic lab=pad_in}
+C {lab_pin.sym} -770 -80 0 0 {name=p8 sig_type=std_logic lab=pad_in}
+C {lab_pin.sym} 190 -260 0 0 {name=p9 sig_type=std_logic lab=out}
+C {lab_pin.sym} 290 -590 2 0 {name=p10 sig_type=std_logic lab=vdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_SecondaryProtection_tb.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_SecondaryProtection_tb.sch
new file mode 100644
index 00000000..8d0228cf
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_SecondaryProtection_tb.sch
@@ -0,0 +1,129 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+B 2 800 -280 1600 120 {flags=graph
+y1=0
+y2=2
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-4
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node="pad_res"
+color="4"
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+B 2 800 -720 1600 -320 {flags=graph
+y1=0
+y2=2
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-4
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node="out"
+color="7"
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+B 2 800 160 1600 560 {flags=graph
+y1=0
+y2=2
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=1e-4
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node="vdd"
+color="12"
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+N -340 130 -340 140 {
+lab=GND}
+N -10 50 -10 80 {
+lab=GND}
+N -230 -110 -230 -70 {
+lab=GND}
+N -10 -170 -10 -70 {
+lab=vdd}
+N -230 -170 -10 -170 {
+lab=vdd}
+N -340 -10 -340 70 {
+lab=pad_res}
+N -340 -10 -160 -10 {
+lab=pad_res}
+N -410 -10 -340 -10 {
+lab=pad_res}
+N 170 -120 170 -10 {
+lab=out}
+N 140 -10 170 -10 {
+lab=out}
+N -10 -170 30 -170 {
+lab=vdd}
+C {sg13g2_SecondaryProtection.sym} -10 -10 0 1 {name=x1}
+C {devices/gnd.sym} -340 140 0 0 {name=l7 lab=GND}
+C {devices/vsource.sym} -340 100 0 0 {name=VinB value="dc 0 ac 0 pulse(0, 1.2, 1n, 1u, 1u, 24u, 50u ) "}
+C {lab_pin.sym} -340 30 0 0 {name=p5 sig_type=std_logic lab=pad_res}
+C {devices/gnd.sym} -10 80 0 0 {name=l4 lab=GND}
+C {devices/vsource.sym} -230 -140 0 0 {name=Vdd value=1.2}
+C {devices/gnd.sym} -230 -70 0 0 {name=l20 lab=GND}
+C {devices/code_shown.sym} -970 -50 0 0 {name=MODEL only_toplevel=true
+format="tcleval( @value )"
+value="
+.lib cornerMOSlv.lib mos_tt
+.lib cornerMOShv.lib mos_tt
+.lib cornerRES.lib res_typ
+.include diodes.lib
+
+
+
+
+"}
+C {devices/code_shown.sym} -930 -250 0 0 {name=NGSPICE only_toplevel=true 
+value="
+.param temp=27
+.control
+save all 
+tran 1u 100u
+*meas tran tdelay TRIG v(b) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_io_secondary_protection.raw
+
+.endc
+"}
+C {devices/title.sym} -1100 230 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {lab_pin.sym} -410 -10 0 0 {name=p1 sig_type=std_logic lab=pad_res}
+C {lab_pin.sym} 170 -120 0 0 {name=p2 sig_type=std_logic lab=out}
+C {lab_pin.sym} 30 -170 2 0 {name=p3 sig_type=std_logic lab=vdd}
+C {launcher.sym} 260 70 0 0 {name=h1
+descr="load waves Ctrl + left click" 
+tclcommand="xschem raw_read $netlist_dir/tran_io_secondary_protection.raw tran"}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_inv_x1_tb.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_inv_x1_tb.sch
new file mode 100644
index 00000000..63144ad6
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_inv_x1_tb.sch
@@ -0,0 +1,77 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+B 2 -160 -630 640 -230 {flags=graph
+y1=-0.11
+y2=2.1
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color="4 5"
+node="out
+in"}
+N -600 120 -600 140 {
+lab=GND}
+N -220 10 -220 70 {
+lab=GND}
+N 100 50 100 110 {
+lab=GND}
+N 100 -180 100 -10 {
+lab=#net1}
+N -600 0 -600 60 {
+lab=in}
+N -90 -30 40 -30 {
+lab=out}
+N -440 -30 -330 -30 {
+lab=in}
+N -620 0 -600 0 {
+lab=in}
+N -220 -180 -220 -80 {
+lab=#net1}
+N -220 -180 100 -180 {
+lab=#net1}
+C {devices/code_shown.sym} -300 170 0 0 {name=MODEL only_toplevel=true
+format="tcleval( @value )"
+value="
+.lib cornerMOSlv.lib mos_tt
+"}
+C {devices/code_shown.sym} 160 -70 0 0 {name=NGSPICE only_toplevel=true 
+value="
+.param temp=27
+.control
+save all 
+tran 50p 20n
+meas tran tdelay TRIG v(in) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_logic_not.raw
+.endc
+"}
+C {devices/gnd.sym} -220 70 0 0 {name=l1 lab=GND}
+C {devices/gnd.sym} -600 140 0 0 {name=l2 lab=GND}
+C {devices/vsource.sym} -600 90 0 0 {name=Vin value="dc 0 ac 0 pulse(0, 1.2, 0, 100p, 100p, 2n, 4n ) "}
+C {devices/vsource.sym} 100 20 0 0 {name=Vdd value=1.2}
+C {devices/gnd.sym} 100 110 0 0 {name=l3 lab=GND}
+C {devices/title.sym} -130 260 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {devices/launcher.sym} 230 -170 0 0 {name=h5
+descr="load waves Ctrl + left click" 
+tclcommand="xschem raw_read $netlist_dir/tran_logic_not.raw tran"
+}
+C {devices/lab_pin.sym} -620 0 0 0 {name=p1 sig_type=std_logic lab=in}
+C {devices/lab_pin.sym} 40 -30 2 0 {name=p2 sig_type=std_logic lab=out}
+C {sg13g2_io_inv_x1.sym} -180 -30 0 0 {name=x1}
+C {devices/lab_pin.sym} -440 -30 0 0 {name=p3 sig_type=std_logic lab=in}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_nand2_x1_tb.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_nand2_x1_tb.sch
new file mode 100644
index 00000000..4c07268f
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_nand2_x1_tb.sch
@@ -0,0 +1,130 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+B 2 500 -250 1300 150 {flags=graph
+y1=-0.0651089
+y2=2.58689
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=4
+node=out}
+B 2 500 -670 1300 -270 {flags=graph
+y1=0
+y2=1.8
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node=a
+color=6
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+B 2 500 -1080 1300 -680 {flags=graph
+y1=0
+y2=1.8
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node=b
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=7}
+N 50 -10 50 50 {
+lab=GND}
+N 410 -50 410 130 {
+lab=GND}
+N -190 40 -170 40 {
+lab=A}
+N -170 120 -170 130 {
+lab=GND}
+N -170 40 -170 60 {
+lab=A}
+N -290 -40 -270 -40 {
+lab=B}
+N -270 40 -270 50 {
+lab=GND}
+N -270 -40 -270 -20 {
+lab=B}
+N 410 -290 410 -110 {
+lab=#net1}
+N 190 -90 240 -90 {
+lab=out}
+N 50 -290 50 -170 {
+lab=#net1}
+N 50 -290 410 -290 {
+lab=#net1}
+N -170 -70 -50 -70 {
+lab=A}
+N -270 -110 -50 -110 {
+lab=B}
+C {devices/code_shown.sym} -290 190 0 0 {name=MODEL only_toplevel=true
+format="tcleval( @value )"
+value="
+.lib cornerMOSlv.lib mos_tt
+"}
+C {devices/code_shown.sym} -330 -540 0 0 {name=NGSPICE only_toplevel=true 
+value="
+.param temp=27
+.control
+save all 
+tran 50p 20n
+meas tran tdelay TRIG v(b) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_logic_nand.raw
+.endc
+"}
+C {devices/gnd.sym} 50 50 0 0 {name=l1 lab=GND}
+C {devices/gnd.sym} -170 130 0 0 {name=l2 lab=GND}
+C {devices/vsource.sym} -170 90 0 0 {name=VinA value="dc 0 ac 0 pulse(0, 1.2, 2n, 100p, 100p, 4n, 6n ) "}
+C {devices/vsource.sym} 410 -80 0 0 {name=Vdd value=1.2}
+C {devices/gnd.sym} 410 130 0 0 {name=l3 lab=GND}
+C {devices/title.sym} -130 260 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {devices/launcher.sym} -270 -610 0 0 {name=h5
+descr="load waves Ctrl + left click" 
+tclcommand="xschem raw_read $netlist_dir/tran_logic_nand.raw tran"
+}
+C {devices/lab_pin.sym} -190 40 0 0 {name=p1 sig_type=std_logic lab=A}
+C {devices/lab_pin.sym} 240 -90 2 0 {name=p2 sig_type=std_logic lab=out}
+C {devices/gnd.sym} -270 50 0 0 {name=l7 lab=GND}
+C {devices/vsource.sym} -270 10 0 0 {name=VinB value="dc 0 ac 0 pulse(0, 1.2, 0, 100p, 100p, 2n, 4n ) "}
+C {devices/lab_pin.sym} -290 -40 0 0 {name=p3 sig_type=std_logic lab=B}
+C {sg13g2_io_nand2_x1.sym} 100 -90 0 0 {name=x1}
+C {devices/lab_pin.sym} -170 -70 0 0 {name=p4 sig_type=std_logic lab=A}
+C {devices/lab_pin.sym} -270 -110 0 0 {name=p5 sig_type=std_logic lab=B}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_nor2_x1_tb.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_nor2_x1_tb.sch
new file mode 100644
index 00000000..dc32a9f3
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/io_testbench/sg13g2_io_nor2_x1_tb.sch
@@ -0,0 +1,136 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+B 2 820 -200 1620 200 {flags=graph
+y1=-0.0651089
+y2=2.58689
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=4
+node=out}
+B 2 820 -620 1620 -220 {flags=graph
+y1=0
+y2=1.8
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node=a
+color=6
+dataset=-1
+unitx=1
+logx=0
+logy=0
+}
+B 2 820 -1030 1620 -630 {flags=graph
+y1=0
+y2=1.8
+ypos1=0
+ypos2=2
+divy=5
+subdivy=1
+unity=1
+x1=0
+x2=2e-08
+divx=5
+subdivx=1
+xlabmag=1.0
+ylabmag=1.0
+node=b
+
+dataset=-1
+unitx=1
+logx=0
+logy=0
+color=7}
+N 60 -30 60 30 {
+lab=GND}
+N 410 -50 410 130 {
+lab=GND}
+N -190 40 -170 40 {
+lab=A}
+N -170 120 -170 130 {
+lab=GND}
+N -170 40 -170 60 {
+lab=A}
+N -290 -40 -270 -40 {
+lab=B}
+N -270 40 -270 50 {
+lab=GND}
+N -270 -40 -270 -20 {
+lab=B}
+N 410 -290 410 -110 {
+lab=#net1}
+N 190 -90 240 -90 {
+lab=out}
+N 60 -290 410 -290 {
+lab=#net1}
+N -170 -70 -170 40 {
+lab=A}
+N -170 -70 10 -70 {
+lab=A}
+N -270 -110 -270 -40 {
+lab=B}
+N 10 -110 10 -100 {
+lab=B}
+N -270 -110 10 -110 {
+lab=B}
+N 10 -80 10 -70 {
+lab=A}
+N 60 -290 60 -150 {
+lab=#net1}
+C {devices/code_shown.sym} -290 190 0 0 {name=MODEL only_toplevel=true
+format="tcleval( @value )"
+value="
+.lib cornerMOSlv.lib mos_tt
+"}
+C {devices/code_shown.sym} -330 -530 0 0 {name=NGSPICE only_toplevel=true 
+value="
+.param temp=27
+.control
+save all 
+tran 50p 20n
+meas tran tdelay TRIG v(b) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_logic_nand.raw
+.endc
+"}
+C {devices/gnd.sym} 60 30 0 0 {name=l1 lab=GND}
+C {devices/gnd.sym} -170 130 0 0 {name=l2 lab=GND}
+C {devices/vsource.sym} -170 90 0 0 {name=VinA value="dc 0 ac 0 pulse(0, 1.2, 2n, 100p, 100p, 4n, 6n ) "}
+C {devices/vsource.sym} 410 -80 0 0 {name=Vdd value=1.2}
+C {devices/gnd.sym} 410 130 0 0 {name=l3 lab=GND}
+C {devices/title.sym} -130 260 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {devices/launcher.sym} -270 -610 0 0 {name=h5
+descr="load waves Ctrl + left click" 
+tclcommand="xschem raw_read $netlist_dir/tran_logic_nand.raw tran"
+}
+C {devices/lab_pin.sym} -190 40 0 0 {name=p1 sig_type=std_logic lab=A}
+C {devices/lab_pin.sym} 240 -90 2 0 {name=p2 sig_type=std_logic lab=out}
+C {devices/gnd.sym} -270 50 0 0 {name=l7 lab=GND}
+C {devices/vsource.sym} -270 10 0 0 {name=VinB value="dc 0 ac 0 pulse(0, 1.2, 0, 100p, 100p, 2n, 4n ) "}
+C {devices/lab_pin.sym} -290 -40 0 0 {name=p3 sig_type=std_logic lab=B}
+C {sg13g2_io_nor2_x1.sym} 150 -90 0 0 {name=x1}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/readme.txt b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/readme.txt
new file mode 100644
index 00000000..eba06986
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/readme.txt
@@ -0,0 +1 @@
+The xschem tool need to be started from libs.ref/sg13g2_io/xschem folder for the IO cell symbols to be found correctly.
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N15N15D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N15N15D.sch
new file mode 100644
index 00000000..071c6cda
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N15N15D.sch
@@ -0,0 +1,425 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -240 -590 -240 -560 {
+lab=xxx}
+N 1480 -560 1580 -560 {
+lab=xxx}
+N 1580 -590 1580 -560 {
+lab=xxx}
+N -110 -590 -110 -560 {
+lab=xxx}
+N -210 -560 -110 -560 {
+lab=xxx}
+N 20 -590 20 -560 {
+lab=xxx}
+N -80 -560 20 -560 {
+lab=xxx}
+N 150 -590 150 -560 {
+lab=xxx}
+N 50 -560 150 -560 {
+lab=xxx}
+N 280 -590 280 -560 {
+lab=xxx}
+N 210 -560 280 -560 {
+lab=xxx}
+N 410 -590 410 -560 {
+lab=xxx}
+N 310 -560 410 -560 {
+lab=xxx}
+N 540 -590 540 -560 {
+lab=xxx}
+N 440 -560 540 -560 {
+lab=xxx}
+N 670 -590 670 -560 {
+lab=xxx}
+N 570 -560 670 -560 {
+lab=xxx}
+N 800 -590 800 -560 {
+lab=xxx}
+N 700 -560 800 -560 {
+lab=xxx}
+N 930 -590 930 -560 {
+lab=xxx}
+N 830 -560 930 -560 {
+lab=xxx}
+N 1060 -590 1060 -560 {
+lab=xxx}
+N 960 -560 1060 -560 {
+lab=xxx}
+N 1190 -590 1190 -560 {
+lab=xxx}
+N 1090 -560 1190 -560 {
+lab=xxx}
+N 1320 -590 1320 -560 {
+lab=xxx}
+N 1220 -560 1320 -560 {
+lab=xxx}
+N 1450 -590 1450 -560 {
+lab=xxx}
+N 1350 -560 1450 -560 {
+lab=xxx}
+N -240 -620 -210 -620 {
+lab=xxx}
+N -210 -620 -210 -560 {
+lab=xxx}
+N -240 -560 -210 -560 {
+lab=xxx}
+N -110 -620 -80 -620 {
+lab=xxx}
+N -80 -620 -80 -560 {
+lab=xxx}
+N -110 -560 -80 -560 {
+lab=xxx}
+N 20 -620 50 -620 {
+lab=xxx}
+N 50 -620 50 -560 {
+lab=xxx}
+N 20 -560 50 -560 {
+lab=xxx}
+N 150 -620 180 -620 {
+lab=xxx}
+N 180 -620 180 -560 {
+lab=xxx}
+N 150 -560 180 -560 {
+lab=xxx}
+N 280 -620 310 -620 {
+lab=xxx}
+N 310 -620 310 -560 {
+lab=xxx}
+N 280 -560 310 -560 {
+lab=xxx}
+N 410 -620 440 -620 {
+lab=xxx}
+N 440 -620 440 -560 {
+lab=xxx}
+N 410 -560 440 -560 {
+lab=xxx}
+N 540 -620 570 -620 {
+lab=xxx}
+N 570 -620 570 -560 {
+lab=xxx}
+N 540 -560 570 -560 {
+lab=xxx}
+N 1580 -620 1610 -620 {
+lab=xxx}
+N 1610 -620 1610 -560 {
+lab=xxx}
+N 1580 -560 1610 -560 {
+lab=xxx}
+N 1450 -620 1480 -620 {
+lab=xxx}
+N 1480 -620 1480 -560 {
+lab=xxx}
+N 1450 -560 1480 -560 {
+lab=xxx}
+N 1320 -620 1350 -620 {
+lab=xxx}
+N 1350 -620 1350 -560 {
+lab=xxx}
+N 1320 -560 1350 -560 {
+lab=xxx}
+N 1190 -620 1220 -620 {
+lab=xxx}
+N 1220 -620 1220 -560 {
+lab=xxx}
+N 1190 -560 1220 -560 {
+lab=xxx}
+N 1060 -620 1090 -620 {
+lab=xxx}
+N 1090 -620 1090 -560 {
+lab=xxx}
+N 1060 -560 1090 -560 {
+lab=xxx}
+N 930 -620 960 -620 {
+lab=xxx}
+N 960 -620 960 -560 {
+lab=xxx}
+N 930 -560 960 -560 {
+lab=xxx}
+N 800 -620 830 -620 {
+lab=xxx}
+N 830 -620 830 -560 {
+lab=xxx}
+N 800 -560 830 -560 {
+lab=xxx}
+N 670 -620 700 -620 {
+lab=xxx}
+N 700 -620 700 -560 {
+lab=xxx}
+N 670 -560 700 -560 {
+lab=xxx}
+N -240 -690 -240 -650 {
+lab=pad}
+N 1450 -690 1580 -690 {
+lab=pad}
+N 1580 -690 1580 -650 {
+lab=pad}
+N 1450 -690 1450 -650 {
+lab=pad}
+N 1320 -690 1450 -690 {
+lab=pad}
+N 1320 -690 1320 -650 {
+lab=pad}
+N 1190 -690 1320 -690 {
+lab=pad}
+N 1190 -690 1190 -650 {
+lab=pad}
+N 1060 -690 1190 -690 {
+lab=pad}
+N 1060 -690 1060 -650 {
+lab=pad}
+N 930 -690 1060 -690 {
+lab=pad}
+N 930 -690 930 -650 {
+lab=pad}
+N 800 -690 930 -690 {
+lab=pad}
+N 800 -690 800 -650 {
+lab=pad}
+N 670 -690 800 -690 {
+lab=pad}
+N 670 -690 670 -650 {
+lab=pad}
+N 540 -690 670 -690 {
+lab=pad}
+N 540 -690 540 -650 {
+lab=pad}
+N 410 -690 540 -690 {
+lab=pad}
+N 410 -690 410 -650 {
+lab=pad}
+N 280 -690 410 -690 {
+lab=pad}
+N 280 -690 280 -650 {
+lab=pad}
+N 150 -690 280 -690 {
+lab=pad}
+N 150 -690 150 -650 {
+lab=pad}
+N 130 -690 150 -690 {
+lab=pad}
+N -320 -620 -280 -620 {
+lab=gate}
+N -320 -620 -320 -500 {
+lab=gate}
+N -400 -620 -320 -620 {
+lab=gate}
+N 1410 -500 1540 -500 {
+lab=gate}
+N 1540 -620 1540 -500 {
+lab=gate}
+N 1410 -620 1410 -500 {
+lab=gate}
+N 1280 -500 1410 -500 {
+lab=gate}
+N 1280 -620 1280 -500 {
+lab=gate}
+N 1150 -500 1280 -500 {
+lab=gate}
+N 1150 -620 1150 -500 {
+lab=gate}
+N 1020 -500 1150 -500 {
+lab=gate}
+N 1020 -620 1020 -500 {
+lab=gate}
+N 890 -500 1020 -500 {
+lab=gate}
+N 890 -620 890 -500 {
+lab=gate}
+N 760 -500 890 -500 {
+lab=gate}
+N 760 -620 760 -500 {
+lab=gate}
+N 630 -500 760 -500 {
+lab=gate}
+N 630 -620 630 -500 {
+lab=gate}
+N 500 -500 630 -500 {
+lab=gate}
+N 500 -620 500 -500 {
+lab=gate}
+N 370 -500 500 -500 {
+lab=gate}
+N 370 -620 370 -500 {
+lab=gate}
+N 240 -500 370 -500 {
+lab=gate}
+N 240 -620 240 -500 {
+lab=gate}
+N 140 -500 240 -500 {
+lab=gate}
+N 110 -620 110 -500 {
+lab=gate}
+N -20 -500 110 -500 {
+lab=gate}
+N -20 -620 -20 -500 {
+lab=gate}
+N -150 -500 -20 -500 {
+lab=gate}
+N -150 -620 -150 -500 {
+lab=gate}
+N -320 -500 -150 -500 {
+lab=gate}
+N -110 -690 -110 -650 {
+lab=pad}
+N -240 -690 -110 -690 {
+lab=pad}
+N 20 -690 20 -650 {
+lab=pad}
+N -110 -690 20 -690 {
+lab=pad}
+N 130 -810 130 -690 {
+lab=pad}
+N 20 -690 130 -690 {
+lab=pad}
+N 210 -380 210 -340 {
+lab=xxx}
+N 180 -560 210 -560 {
+lab=xxx}
+N 140 -410 140 -380 {
+lab=xxx}
+N 140 -380 210 -380 {
+lab=xxx}
+N 210 -560 210 -380 {
+lab=xxx}
+N 140 -500 140 -470 {
+lab=gate}
+N 110 -500 140 -500 {
+lab=gate}
+N 340 -810 340 -760 {
+lab=iovdd}
+C {sg13g2_pr/sg13_hv_nmos.sym} 520 -620 2 1 {name=M1
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 650 -620 2 1 {name=M2
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 780 -620 2 1 {name=M3
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 910 -620 2 1 {name=M4
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 390 -620 2 1 {name=M5
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1170 -620 2 1 {name=M6
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1300 -620 2 1 {name=M7
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1430 -620 2 1 {name=M8
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1560 -620 2 1 {name=M9
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1040 -620 2 1 {name=M10
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -130 -620 2 1 {name=M11
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 0 -620 2 1 {name=M12
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 130 -620 2 1 {name=M13
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 260 -620 2 1 {name=M14
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -260 -620 2 1 {name=M15
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/dantenna.sym} 140 -440 0 0 {name=D1
+model=dantenna
+l=0.64u
+w=0.3u
+spiceprefix=X
+}
+C {devices/iopin.sym} 210 -340 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} -400 -620 2 0 {name=gate lab=gate}
+C {devices/iopin.sym} 130 -810 3 0 {name=pad lab=pad}
+C {devices/iopin.sym} 340 -810 3 0 {name=iovdd lab=iovdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N15N15D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N15N15D.sym
new file mode 100644
index 00000000..8b486b84
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N15N15D.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 0 -60 0 -40 {}
+L 7 130 0 150 0 {}
+L 7 -150 0 -130 0 {}
+L 7 0 40 0 60 {}
+B 5 -2.5 -62.5 2.5 -57.5 {name=iovdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=gate dir=inout}
+B 5 -2.5 57.5 2.5 62.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_N15N15D} -68 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} 15 -34 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {gate} -105 -4 0 1 0.2 0.2 {}
+T {iovss} 15 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N20N0D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N20N0D.sch
new file mode 100644
index 00000000..05708f15
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N20N0D.sch
@@ -0,0 +1,592 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1670 -70 1670 -40 {
+lab=iovss}
+N 4010 -40 4140 -40 {
+lab=iovss}
+N 4140 -60 4140 -40 {
+lab=iovss}
+N 4140 -120 4170 -120 {
+lab=iovss}
+N 4170 -120 4170 -60 {
+lab=iovss}
+N 4140 -60 4170 -60 {
+lab=iovss}
+N 4140 -90 4140 -60 {
+lab=iovss}
+N 4010 -70 4010 -40 {
+lab=iovss}
+N 3870 -40 4010 -40 {
+lab=iovss}
+N 4010 -120 4040 -120 {
+lab=iovss}
+N 4040 -120 4040 -70 {
+lab=iovss}
+N 4010 -70 4040 -70 {
+lab=iovss}
+N 4010 -90 4010 -70 {
+lab=iovss}
+N 3870 -70 3870 -40 {
+lab=iovss}
+N 3750 -40 3870 -40 {
+lab=iovss}
+N 3870 -120 3900 -120 {
+lab=iovss}
+N 3900 -120 3900 -70 {
+lab=iovss}
+N 3870 -70 3900 -70 {
+lab=iovss}
+N 3870 -90 3870 -70 {
+lab=iovss}
+N 3750 -60 3750 -40 {
+lab=iovss}
+N 3620 -40 3750 -40 {
+lab=iovss}
+N 3750 -120 3780 -120 {
+lab=iovss}
+N 3780 -120 3780 -60 {
+lab=iovss}
+N 3750 -60 3780 -60 {
+lab=iovss}
+N 3750 -90 3750 -60 {
+lab=iovss}
+N 3620 -70 3620 -40 {
+lab=iovss}
+N 3490 -40 3620 -40 {
+lab=iovss}
+N 3620 -120 3650 -120 {
+lab=iovss}
+N 3650 -120 3650 -70 {
+lab=iovss}
+N 3620 -70 3650 -70 {
+lab=iovss}
+N 3620 -90 3620 -70 {
+lab=iovss}
+N 3490 -70 3490 -40 {
+lab=iovss}
+N 3360 -40 3490 -40 {
+lab=iovss}
+N 3490 -120 3520 -120 {
+lab=iovss}
+N 3520 -120 3520 -70 {
+lab=iovss}
+N 3490 -70 3520 -70 {
+lab=iovss}
+N 3490 -90 3490 -70 {
+lab=iovss}
+N 3360 -60 3360 -40 {
+lab=iovss}
+N 3230 -40 3360 -40 {
+lab=iovss}
+N 3360 -120 3380 -120 {
+lab=iovss}
+N 3380 -120 3380 -60 {
+lab=iovss}
+N 3360 -60 3380 -60 {
+lab=iovss}
+N 3360 -90 3360 -60 {
+lab=iovss}
+N 3230 -70 3230 -40 {
+lab=iovss}
+N 3100 -40 3230 -40 {
+lab=iovss}
+N 3230 -120 3260 -120 {
+lab=iovss}
+N 3260 -120 3260 -70 {
+lab=iovss}
+N 3230 -70 3260 -70 {
+lab=iovss}
+N 3230 -90 3230 -70 {
+lab=iovss}
+N 3100 -60 3100 -40 {
+lab=iovss}
+N 2970 -40 3100 -40 {
+lab=iovss}
+N 3100 -120 3130 -120 {
+lab=iovss}
+N 3130 -120 3130 -60 {
+lab=iovss}
+N 3100 -60 3130 -60 {
+lab=iovss}
+N 3100 -90 3100 -60 {
+lab=iovss}
+N 2970 -70 2970 -40 {
+lab=iovss}
+N 2840 -40 2970 -40 {
+lab=iovss}
+N 2970 -120 3000 -120 {
+lab=iovss}
+N 3000 -120 3000 -70 {
+lab=iovss}
+N 2970 -70 3000 -70 {
+lab=iovss}
+N 2970 -90 2970 -70 {
+lab=iovss}
+N 1800 -60 1800 -40 {
+lab=iovss}
+N 1730 -40 1800 -40 {
+lab=iovss}
+N 1800 -120 1830 -120 {
+lab=iovss}
+N 1830 -120 1830 -60 {
+lab=iovss}
+N 1800 -60 1830 -60 {
+lab=iovss}
+N 1800 -90 1800 -60 {
+lab=iovss}
+N 1930 -60 1930 -40 {
+lab=iovss}
+N 1800 -40 1930 -40 {
+lab=iovss}
+N 1930 -120 1960 -120 {
+lab=iovss}
+N 1960 -120 1960 -60 {
+lab=iovss}
+N 1930 -60 1960 -60 {
+lab=iovss}
+N 1930 -90 1930 -60 {
+lab=iovss}
+N 2060 -70 2060 -40 {
+lab=iovss}
+N 1930 -40 2060 -40 {
+lab=iovss}
+N 2060 -120 2090 -120 {
+lab=iovss}
+N 2090 -120 2090 -70 {
+lab=iovss}
+N 2060 -70 2090 -70 {
+lab=iovss}
+N 2060 -90 2060 -70 {
+lab=iovss}
+N 2190 -70 2190 -40 {
+lab=iovss}
+N 2060 -40 2190 -40 {
+lab=iovss}
+N 2190 -120 2220 -120 {
+lab=iovss}
+N 2220 -120 2220 -70 {
+lab=iovss}
+N 2190 -70 2220 -70 {
+lab=iovss}
+N 2190 -90 2190 -70 {
+lab=iovss}
+N 2320 -70 2320 -40 {
+lab=iovss}
+N 2190 -40 2320 -40 {
+lab=iovss}
+N 2320 -120 2340 -120 {
+lab=iovss}
+N 2340 -120 2340 -70 {
+lab=iovss}
+N 2320 -70 2340 -70 {
+lab=iovss}
+N 2320 -90 2320 -70 {
+lab=iovss}
+N 2450 -70 2450 -40 {
+lab=iovss}
+N 2320 -40 2450 -40 {
+lab=iovss}
+N 2450 -120 2470 -120 {
+lab=iovss}
+N 2470 -120 2470 -70 {
+lab=iovss}
+N 2450 -70 2470 -70 {
+lab=iovss}
+N 2450 -90 2450 -70 {
+lab=iovss}
+N 2570 -90 2570 -40 {
+lab=iovss}
+N 2450 -40 2570 -40 {
+lab=iovss}
+N 2570 -120 2610 -120 {
+lab=iovss}
+N 2610 -120 2610 -40 {
+lab=iovss}
+N 2570 -40 2610 -40 {
+lab=iovss}
+N 2710 -60 2710 -40 {
+lab=iovss}
+N 2610 -40 2710 -40 {
+lab=iovss}
+N 2710 -120 2740 -120 {
+lab=iovss}
+N 2740 -120 2740 -60 {
+lab=iovss}
+N 2710 -60 2740 -60 {
+lab=iovss}
+N 2710 -90 2710 -60 {
+lab=iovss}
+N 2840 -80 2840 -40 {
+lab=iovss}
+N 2710 -40 2840 -40 {
+lab=iovss}
+N 2840 -120 2870 -120 {
+lab=iovss}
+N 2870 -120 2870 -80 {
+lab=iovss}
+N 2840 -80 2870 -80 {
+lab=iovss}
+N 2840 -90 2840 -80 {
+lab=iovss}
+N 4140 -190 4140 -150 {
+lab=pad}
+N 4010 -190 4140 -190 {
+lab=pad}
+N 1670 -190 1670 -150 {
+lab=pad}
+N 1800 -190 1800 -150 {
+lab=pad}
+N 1670 -190 1800 -190 {
+lab=pad}
+N 1930 -190 1930 -150 {
+lab=pad}
+N 1800 -190 1930 -190 {
+lab=pad}
+N 2060 -190 2060 -150 {
+lab=pad}
+N 1930 -190 2060 -190 {
+lab=pad}
+N 2190 -190 2190 -150 {
+lab=pad}
+N 2060 -190 2190 -190 {
+lab=pad}
+N 2320 -190 2320 -150 {
+lab=pad}
+N 2280 -190 2320 -190 {
+lab=pad}
+N 2450 -190 2450 -150 {
+lab=pad}
+N 2320 -190 2450 -190 {
+lab=pad}
+N 2570 -190 2570 -150 {
+lab=pad}
+N 2450 -190 2570 -190 {
+lab=pad}
+N 2710 -190 2710 -150 {
+lab=pad}
+N 2570 -190 2710 -190 {
+lab=pad}
+N 2840 -190 2840 -150 {
+lab=pad}
+N 2710 -190 2840 -190 {
+lab=pad}
+N 2970 -190 2970 -150 {
+lab=pad}
+N 2840 -190 2970 -190 {
+lab=pad}
+N 3100 -190 3100 -150 {
+lab=pad}
+N 2970 -190 3100 -190 {
+lab=pad}
+N 3230 -190 3230 -150 {
+lab=pad}
+N 3100 -190 3230 -190 {
+lab=pad}
+N 3360 -190 3360 -150 {
+lab=pad}
+N 3230 -190 3360 -190 {
+lab=pad}
+N 3490 -190 3490 -150 {
+lab=pad}
+N 3360 -190 3490 -190 {
+lab=pad}
+N 3620 -190 3620 -150 {
+lab=pad}
+N 3490 -190 3620 -190 {
+lab=pad}
+N 3750 -190 3750 -150 {
+lab=pad}
+N 3620 -190 3750 -190 {
+lab=pad}
+N 3870 -190 3870 -150 {
+lab=pad}
+N 3750 -190 3870 -190 {
+lab=pad}
+N 4010 -190 4010 -150 {
+lab=pad}
+N 3870 -190 4010 -190 {
+lab=pad}
+N 1580 -120 1630 -120 {
+lab=#net1}
+N 1580 -120 1580 50 {
+lab=#net1}
+N 4100 -120 4100 50 {
+lab=#net1}
+N 3970 50 4100 50 {
+lab=#net1}
+N 1670 -120 1710 -120 {
+lab=iovss}
+N 1710 -120 1710 -70 {
+lab=iovss}
+N 1670 -70 1710 -70 {
+lab=iovss}
+N 1670 -90 1670 -70 {
+lab=iovss}
+N 1760 -120 1760 50 {
+lab=#net1}
+N 1580 50 1760 50 {
+lab=#net1}
+N 1890 -120 1890 50 {
+lab=#net1}
+N 1760 50 1890 50 {
+lab=#net1}
+N 2020 -120 2020 50 {
+lab=#net1}
+N 1890 50 2020 50 {
+lab=#net1}
+N 2150 -120 2150 50 {
+lab=#net1}
+N 2020 50 2150 50 {
+lab=#net1}
+N 2280 -120 2280 50 {
+lab=#net1}
+N 2150 50 2280 50 {
+lab=#net1}
+N 2410 -120 2410 50 {
+lab=#net1}
+N 2280 50 2410 50 {
+lab=#net1}
+N 2530 -120 2530 50 {
+lab=#net1}
+N 2410 50 2530 50 {
+lab=#net1}
+N 2670 -120 2670 50 {
+lab=#net1}
+N 2530 50 2670 50 {
+lab=#net1}
+N 2800 -120 2800 50 {
+lab=#net1}
+N 2670 50 2800 50 {
+lab=#net1}
+N 2930 -120 2930 50 {
+lab=#net1}
+N 2800 50 2930 50 {
+lab=#net1}
+N 3060 -120 3060 50 {
+lab=#net1}
+N 2930 50 3060 50 {
+lab=#net1}
+N 3190 -120 3190 50 {
+lab=#net1}
+N 3060 50 3190 50 {
+lab=#net1}
+N 3320 -120 3320 50 {
+lab=#net1}
+N 3190 50 3320 50 {
+lab=#net1}
+N 3450 -120 3450 50 {
+lab=#net1}
+N 3320 50 3450 50 {
+lab=#net1}
+N 3580 -120 3580 50 {
+lab=#net1}
+N 3450 50 3580 50 {
+lab=#net1}
+N 3710 -120 3710 50 {
+lab=#net1}
+N 3580 50 3710 50 {
+lab=#net1}
+N 3830 -120 3830 50 {
+lab=#net1}
+N 3710 50 3830 50 {
+lab=#net1}
+N 3970 -120 3970 50 {
+lab=#net1}
+N 3830 50 3970 50 {
+lab=#net1}
+N 1730 180 1730 230 {
+lab=iovss}
+N 1670 -40 1730 -40 {
+lab=iovss}
+N 1490 120 1490 180 {
+lab=iovss}
+N 1490 180 1730 180 {
+lab=iovss}
+N 1730 -40 1730 180 {
+lab=iovss}
+N 1490 -120 1490 60 {
+lab=#net1}
+N 1490 -120 1580 -120 {
+lab=#net1}
+N 2280 -300 2280 -190 {
+lab=pad}
+N 2190 -190 2280 -190 {
+lab=pad}
+N 2630 -300 2630 -260 {
+lab=iovdd}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1650 -120 2 1 {name=M1
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1780 -120 2 1 {name=M2
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1910 -120 2 1 {name=M3
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2040 -120 2 1 {name=M4
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2170 -120 2 1 {name=M5
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2300 -120 2 1 {name=M6
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2430 -120 2 1 {name=M7
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2550 -120 2 1 {name=M8
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2690 -120 2 1 {name=M9
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2820 -120 2 1 {name=M10
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 2950 -120 2 1 {name=M11
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3080 -120 2 1 {name=M12
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3210 -120 2 1 {name=M13
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3340 -120 2 1 {name=M14
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3470 -120 2 1 {name=M15
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3600 -120 2 1 {name=M16
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3730 -120 2 1 {name=M17
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3850 -120 2 1 {name=M18
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 3990 -120 2 1 {name=M19
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 4120 -120 2 1 {name=M20
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/rppd.sym} 1490 90 0 0 {name=Rp1
+w=0.5e-6
+l=3.54e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {devices/iopin.sym} 1730 230 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2280 -300 3 0 {name=pad lab=pad}
+C {devices/iopin.sym} 2630 -300 3 0 {name=iovdd lab=iovdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N20N0D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N20N0D.sym
new file mode 100644
index 00000000..9c2a91ff
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N20N0D.sym
@@ -0,0 +1,25 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -30 130 -30 {}
+L 4 -130 30 130 30 {}
+L 4 -130 -30 -130 30 {}
+L 4 130 -30 130 30 {}
+L 7 130 0 150 0 {}
+L 7 0 -50 0 -30 {}
+L 7 0 30 0 50 {}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -2.5 -52.5 2.5 -47.5 {name=iovdd dir=inout}
+B 5 -2.5 47.5 2.5 52.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_N20N0D} -73.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -42 0 0 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {iovdd} 15 -24 0 1 0.2 0.2 {}
+T {iovss} 15 16 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N2N2D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N2N2D.sch
new file mode 100644
index 00000000..97c698cc
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N2N2D.sch
@@ -0,0 +1,91 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 900 -330 900 -300 {
+lab=pad}
+N 990 -330 1090 -330 {
+lab=pad}
+N 1090 -330 1090 -300 {
+lab=pad}
+N 900 -230 900 -200 {
+lab=iovss}
+N 990 -200 1090 -200 {
+lab=iovss}
+N 1090 -220 1090 -200 {
+lab=iovss}
+N 1090 -270 1140 -270 {
+lab=iovss}
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+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 880 -270 2 1 {name=M2
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/dantenna.sym} 780 -220 0 0 {name=D1
+model=dantenna
+l=0.64u
+w=0.3u
+spiceprefix=X
+}
+C {devices/iopin.sym} 990 -120 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 690 -270 2 0 {name=gate lab=gate}
+C {devices/iopin.sym} 990 -370 3 0 {name=pad lab=pad}
+C {devices/iopin.sym} 850 -380 3 0 {name=iovdd lab=iovdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N2N2D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N2N2D.sym
new file mode 100644
index 00000000..a2b7bcfb
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N2N2D.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
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+B 5 -32.5 -62.5 -27.5 -57.5 {name=iovdd dir=inout}
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+B 5 -152.5 -2.5 -147.5 2.5 {name=gate dir=inout}
+B 5 -32.5 57.5 -27.5 62.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_N2N2D} -99 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} -35 -54 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {gate} -135 6 0 1 0.2 0.2 {}
+T {iovss} -35 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N43N43D4R.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N43N43D4R.sch
new file mode 100644
index 00000000..44023a81
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N43N43D4R.sch
@@ -0,0 +1,2428 @@
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -160 -800 2 1 {name=M121
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -530 -800 2 1 {name=M122
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -410 -800 2 1 {name=M123
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -300 -800 2 1 {name=M124
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -670 -800 2 1 {name=M125
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -810 -800 2 1 {name=M126
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -990 -800 2 1 {name=M127
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -1130 -800 2 1 {name=M128
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -1270 -800 2 1 {name=M129
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -50 -280 2 1 {name=M130
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 70 -280 2 1 {name=M131
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 180 -280 2 1 {name=M132
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -190 -280 2 1 {name=M133
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -330 -280 2 1 {name=M134
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -700 -280 2 1 {name=M135
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -580 -280 2 1 {name=M136
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -470 -280 2 1 {name=M137
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -840 -280 2 1 {name=M138
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -980 -280 2 1 {name=M139
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1240 -280 2 1 {name=M140
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1360 -280 2 1 {name=M141
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1470 -280 2 1 {name=M142
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1100 -280 2 1 {name=M143
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 960 -280 2 1 {name=M144
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 590 -280 2 1 {name=M145
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 710 -280 2 1 {name=M146
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 820 -280 2 1 {name=M147
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 450 -280 2 1 {name=M148
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 310 -280 2 1 {name=M149
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1440 -950 2 1 {name=M150
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -1220 -280 2 1 {name=M151
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -1110 -280 2 1 {name=M152
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1300 -950 2 1 {name=M153
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1160 -950 2 1 {name=M154
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 790 -950 2 1 {name=M155
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 910 -950 2 1 {name=M156
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1020 -950 2 1 {name=M157
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 650 -950 2 1 {name=M158
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 510 -950 2 1 {name=M159
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 120 -950 2 1 {name=M160
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 240 -950 2 1 {name=M161
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 350 -950 2 1 {name=M162
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -20 -950 2 1 {name=M163
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -160 -950 2 1 {name=M164
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -530 -950 2 1 {name=M165
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -410 -950 2 1 {name=M166
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -300 -950 2 1 {name=M167
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -670 -950 2 1 {name=M168
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -810 -950 2 1 {name=M169
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -990 -950 2 1 {name=M170
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -1130 -950 2 1 {name=M171
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} -1270 -950 2 1 {name=M172
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {devices/iopin.sym} 80 -1070 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 280 390 0 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} -1380 -340 2 0 {name=gate lab=gate}
+C {sg13g2_pr/dantenna.sym} 170 370 3 0 {name=D1
+model=dantenna
+l=0.64u
+w=0.48u
+spiceprefix=X
+}
+C {devices/iopin.sym} 610 -1060 0 0 {name=iovdd lab=iovdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N43N43D4R.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N43N43D4R.sym
new file mode 100644
index 00000000..0d713842
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N43N43D4R.sym
@@ -0,0 +1,25 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 130 0 150 0 {}
+L 7 10 -60 10 -40 {}
+L 7 -150 0 -130 0 {}
+L 7 10 40 10 60 {}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 7.5 -62.5 12.5 -57.5 {name=iovdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=gate dir=inout}
+B 5 7.5 57.5 12.5 62.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_N43N43D4R} -77 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {iovdd} 45 -54 0 1 0.2 0.2 {}
+T {gate} -105 -14 0 1 0.2 0.2 {}
+T {iovss} 45 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N8N8D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N8N8D.sch
new file mode 100644
index 00000000..bc73c6cb
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N8N8D.sch
@@ -0,0 +1,241 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 590 -530 590 -510 {
+lab=iovss}
+N 1490 -510 1500 -510 {
+lab=iovss}
+N 1500 -530 1500 -510 {
+lab=iovss}
+N 1370 -530 1370 -510 {
+lab=iovss}
+N 1260 -510 1370 -510 {
+lab=iovss}
+N 1230 -530 1230 -510 {
+lab=iovss}
+N 1130 -510 1230 -510 {
+lab=iovss}
+N 1100 -530 1100 -510 {
+lab=iovss}
+N 1010 -510 1100 -510 {
+lab=iovss}
+N 980 -530 980 -510 {
+lab=iovss}
+N 890 -510 980 -510 {
+lab=iovss}
+N 860 -530 860 -510 {
+lab=iovss}
+N 760 -510 860 -510 {
+lab=iovss}
+N 730 -530 730 -510 {
+lab=iovss}
+N 630 -510 730 -510 {
+lab=iovss}
+N 590 -560 630 -560 {
+lab=iovss}
+N 630 -560 630 -510 {
+lab=iovss}
+N 590 -510 630 -510 {
+lab=iovss}
+N 730 -560 760 -560 {
+lab=iovss}
+N 760 -560 760 -510 {
+lab=iovss}
+N 730 -510 760 -510 {
+lab=iovss}
+N 860 -560 890 -560 {
+lab=iovss}
+N 890 -560 890 -510 {
+lab=iovss}
+N 860 -510 890 -510 {
+lab=iovss}
+N 980 -560 1010 -560 {
+lab=iovss}
+N 1010 -560 1010 -510 {
+lab=iovss}
+N 980 -510 1010 -510 {
+lab=iovss}
+N 1100 -560 1130 -560 {
+lab=iovss}
+N 1130 -560 1130 -510 {
+lab=iovss}
+N 1100 -510 1130 -510 {
+lab=iovss}
+N 1230 -560 1260 -560 {
+lab=iovss}
+N 1260 -560 1260 -510 {
+lab=iovss}
+N 1230 -510 1260 -510 {
+lab=iovss}
+N 1370 -560 1390 -560 {
+lab=iovss}
+N 1390 -560 1390 -510 {
+lab=iovss}
+N 1370 -510 1390 -510 {
+lab=iovss}
+N 1500 -560 1530 -560 {
+lab=iovss}
+N 1530 -560 1530 -510 {
+lab=iovss}
+N 1500 -510 1530 -510 {
+lab=iovss}
+N 590 -640 590 -590 {
+lab=pad}
+N 1370 -640 1500 -640 {
+lab=pad}
+N 1500 -640 1500 -590 {
+lab=pad}
+N 1370 -640 1370 -590 {
+lab=pad}
+N 1230 -640 1370 -640 {
+lab=pad}
+N 1230 -640 1230 -590 {
+lab=pad}
+N 1150 -640 1230 -640 {
+lab=pad}
+N 1100 -640 1100 -590 {
+lab=pad}
+N 980 -640 1100 -640 {
+lab=pad}
+N 980 -640 980 -590 {
+lab=pad}
+N 860 -640 980 -640 {
+lab=pad}
+N 860 -640 860 -590 {
+lab=pad}
+N 730 -640 860 -640 {
+lab=pad}
+N 730 -640 730 -590 {
+lab=pad}
+N 590 -640 730 -640 {
+lab=pad}
+N 530 -560 550 -560 {
+lab=gate}
+N 530 -560 530 -470 {
+lab=gate}
+N 500 -560 530 -560 {
+lab=gate}
+N 1380 -470 1460 -470 {
+lab=gate}
+N 1460 -560 1460 -470 {
+lab=gate}
+N 1330 -560 1330 -470 {
+lab=gate}
+N 1190 -470 1330 -470 {
+lab=gate}
+N 1190 -560 1190 -470 {
+lab=gate}
+N 1060 -470 1190 -470 {
+lab=gate}
+N 1060 -560 1060 -470 {
+lab=gate}
+N 940 -470 1060 -470 {
+lab=gate}
+N 940 -560 940 -470 {
+lab=gate}
+N 820 -470 940 -470 {
+lab=gate}
+N 820 -560 820 -470 {
+lab=gate}
+N 690 -470 820 -470 {
+lab=gate}
+N 690 -560 690 -470 {
+lab=gate}
+N 530 -470 690 -470 {
+lab=gate}
+N 1490 -390 1490 -350 {
+lab=iovss}
+N 1390 -510 1490 -510 {
+lab=iovss}
+N 1150 -700 1150 -640 {
+lab=pad}
+N 1100 -640 1150 -640 {
+lab=pad}
+N 1380 -390 1490 -390 {
+lab=iovss}
+N 1490 -510 1490 -390 {
+lab=iovss}
+N 1380 -470 1380 -450 {
+lab=gate}
+N 1330 -470 1380 -470 {
+lab=gate}
+N 860 -720 860 -690 {
+lab=iovdd}
+C {sg13g2_pr/sg13_hv_nmos.sym} 840 -560 2 1 {name=M1
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 960 -560 2 1 {name=M2
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1080 -560 2 1 {name=M3
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1210 -560 2 1 {name=M4
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1350 -560 2 1 {name=M5
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 710 -560 2 1 {name=M6
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 570 -560 2 1 {name=M7
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1480 -560 2 1 {name=M8
+l=0.6u
+w=4.4u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/dantenna.sym} 1380 -420 0 0 {name=D1
+model=dantenna
+l=0.64u
+w=0.3u
+spiceprefix=X
+}
+C {devices/iopin.sym} 1490 -350 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 1150 -700 3 0 {name=pad lab=pad}
+C {devices/iopin.sym} 500 -560 2 0 {name=gate lab=gate}
+C {devices/iopin.sym} 860 -720 3 0 {name=iovdd lab=iovdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N8N8D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_N8N8D.sym
new file mode 100644
index 00000000..b36d60ef
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diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P15N15D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P15N15D.sch
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index 00000000..0d2fa731
--- /dev/null
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+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1770 -880 0 0 {name=M28
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1900 -880 0 0 {name=M29
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2030 -880 0 0 {name=M30
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/dpantenna.sym} 140 -940 0 0 {name=D1
+model=dpantenna
+l=0.64u
+w=0.3u
+spiceprefix=X
+}
+C {devices/iopin.sym} 1460 -570 1 0 {name=pad lab=pad}
+C {devices/iopin.sym} 60 -830 2 0 {name=gate lab=gate}
+C {devices/iopin.sym} 1460 -1040 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 1680 -560 1 0 {name=iovss lab=iovss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P15N15D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P15N15D.sym
new file mode 100644
index 00000000..a23bdeb7
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P15N15D.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 0 -60 0 -40 {}
+L 7 -150 0 -130 0 {}
+L 7 130 0 150 0 {}
+L 7 0 40 0 60 {}
+B 5 -2.5 -62.5 2.5 -57.5 {name=iovdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=gate dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -2.5 57.5 2.5 62.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_P15N15D} -48 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} 15 -34 0 1 0.2 0.2 {}
+T {gate} -105 -4 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {iovss} 15 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P20N0D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P20N0D.sch
new file mode 100644
index 00000000..7aa8d744
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P20N0D.sch
@@ -0,0 +1,1058 @@
+v {xschem version=3.4.5 file_version=1.2
+}
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+N 3980 30 4110 30 {
+lab=pad}
+N 4110 -260 4110 -230 {
+lab=pad}
+N 3980 -230 4110 -230 {
+lab=pad}
+N 3980 -260 3980 -230 {
+lab=pad}
+N 3860 -230 3980 -230 {
+lab=pad}
+N 3860 -260 3860 -230 {
+lab=pad}
+N 3730 -230 3860 -230 {
+lab=pad}
+N 1930 -230 1930 30 {
+lab=pad}
+N 1870 -230 1930 -230 {
+lab=pad}
+N 1870 30 1930 30 {
+lab=pad}
+N 1950 -440 1950 -350 {
+lab=iovdd}
+N 1900 -350 1950 -350 {
+lab=iovdd}
+N 1700 -320 1700 -210 {
+lab=#net1}
+N 1700 -440 1700 -380 {
+lab=iovdd}
+N 1700 -440 1950 -440 {
+lab=iovdd}
+N 1950 -540 1950 -440 {
+lab=iovdd}
+N 2070 30 2070 110 {
+lab=pad}
+N 2000 30 2070 30 {
+lab=pad}
+N 2720 60 2720 120 {
+lab=iovss}
+N 2620 -30 2640 -30 {
+lab=iovdd}
+N 2640 -90 2640 -30 {
+lab=iovdd}
+N 2620 -90 2640 -90 {
+lab=iovdd}
+N 2490 -30 2510 -30 {
+lab=iovdd}
+N 2510 -90 2510 -30 {
+lab=iovdd}
+N 2490 -90 2510 -90 {
+lab=iovdd}
+N 2370 -30 2390 -30 {
+lab=iovdd}
+N 2390 -90 2390 -30 {
+lab=iovdd}
+N 2370 -90 2390 -90 {
+lab=iovdd}
+N 2120 -30 2140 -30 {
+lab=iovdd}
+N 2140 -90 2140 -30 {
+lab=iovdd}
+N 2120 -90 2140 -90 {
+lab=iovdd}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1850 -30 0 0 {name=M1
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1980 -30 0 0 {name=M2
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2100 -30 0 0 {name=M3
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2230 -30 0 0 {name=M4
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2350 -30 0 0 {name=M5
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2470 -30 0 0 {name=M6
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2600 -30 0 0 {name=M7
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2720 -30 0 0 {name=M8
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2850 -30 0 0 {name=M9
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2970 -30 0 0 {name=M10
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3090 -30 0 0 {name=M11
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3220 -30 0 0 {name=M12
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3340 -30 0 0 {name=M13
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3470 -30 0 0 {name=M14
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3590 -30 0 0 {name=M15
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3710 -30 0 0 {name=M16
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3840 -30 0 0 {name=M17
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3960 -30 0 0 {name=M18
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 4090 -30 0 0 {name=M19
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 4210 -30 0 0 {name=M20
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1850 -290 0 0 {name=M21
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1980 -290 0 0 {name=M22
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2100 -290 0 0 {name=M23
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2230 -290 0 0 {name=M24
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2350 -290 0 0 {name=M25
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2470 -290 0 0 {name=M26
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2600 -290 0 0 {name=M27
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2720 -290 0 0 {name=M28
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2850 -290 0 0 {name=M29
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2970 -290 0 0 {name=M30
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3090 -290 0 0 {name=M31
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3220 -290 0 0 {name=M32
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3340 -290 0 0 {name=M33
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3470 -290 0 0 {name=M34
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3590 -290 0 0 {name=M35
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3710 -290 0 0 {name=M36
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3840 -290 0 0 {name=M37
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 3960 -290 0 0 {name=M38
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 4090 -290 0 0 {name=M39
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 4210 -290 0 0 {name=M40
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/rppd.sym} 1700 -350 0 0 {name=R1
+w=0.5e-6
+l=12.9e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {devices/iopin.sym} 1950 -540 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 2070 110 1 0 {name=pad lab=pad}
+C {devices/iopin.sym} 2720 120 1 0 {name=iovss lab=iovss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P20N0D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P20N0D.sym
new file mode 100644
index 00000000..5be4350c
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P20N0D.sym
@@ -0,0 +1,25 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -30 130 -30 {}
+L 4 -130 30 130 30 {}
+L 4 -130 -30 -130 30 {}
+L 4 130 -30 130 30 {}
+L 7 0 -50 0 -30 {}
+L 7 130 0 150 0 {}
+L 7 0 30 0 50 {}
+B 5 -2.5 -52.5 2.5 -47.5 {name=iovdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -2.5 47.5 2.5 52.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_P20N0D} -73.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -42 0 0 0.2 0.2 {}
+T {iovdd} 15 -24 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {iovss} 15 16 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P2N2D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P2N2D.sch
new file mode 100644
index 00000000..2b39b2aa
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P2N2D.sch
@@ -0,0 +1,139 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 710 -400 710 -370 {
+lab=iovdd}
+N 1030 -400 1140 -400 {
+lab=iovdd}
+N 1140 -400 1140 -370 {
+lab=iovdd}
+N 860 -400 860 -370 {
+lab=iovdd}
+N 740 -400 860 -400 {
+lab=iovdd}
+N 1000 -400 1000 -370 {
+lab=iovdd}
+N 930 -400 1000 -400 {
+lab=iovdd}
+N 710 -340 740 -340 {
+lab=iovdd}
+N 740 -400 740 -340 {
+lab=iovdd}
+N 710 -400 740 -400 {
+lab=iovdd}
+N 860 -340 890 -340 {
+lab=iovdd}
+N 890 -400 890 -340 {
+lab=iovdd}
+N 860 -400 890 -400 {
+lab=iovdd}
+N 1000 -340 1030 -340 {
+lab=iovdd}
+N 1030 -400 1030 -340 {
+lab=iovdd}
+N 1000 -400 1030 -400 {
+lab=iovdd}
+N 1140 -340 1160 -340 {
+lab=iovdd}
+N 1160 -400 1160 -340 {
+lab=iovdd}
+N 1140 -400 1160 -400 {
+lab=iovdd}
+N 710 -310 710 -280 {
+lab=pad}
+N 1000 -280 1140 -280 {
+lab=pad}
+N 1140 -310 1140 -280 {
+lab=pad}
+N 1000 -310 1000 -280 {
+lab=pad}
+N 910 -280 1000 -280 {
+lab=pad}
+N 860 -310 860 -280 {
+lab=pad}
+N 710 -280 860 -280 {
+lab=pad}
+N 640 -340 670 -340 {
+lab=gate}
+N 640 -340 640 -250 {
+lab=gate}
+N 960 -250 1100 -250 {
+lab=gate}
+N 1100 -340 1100 -250 {
+lab=gate}
+N 960 -340 960 -250 {
+lab=gate}
+N 820 -250 960 -250 {
+lab=gate}
+N 820 -340 820 -250 {
+lab=gate}
+N 640 -250 820 -250 {
+lab=gate}
+N 930 -450 930 -400 {
+lab=iovdd}
+N 890 -400 930 -400 {
+lab=iovdd}
+N 620 -340 640 -340 {
+lab=gate}
+N 620 -360 620 -340 {
+lab=gate}
+N 550 -340 620 -340 {
+lab=gate}
+N 620 -450 620 -420 {
+lab=iovdd}
+N 620 -450 930 -450 {
+lab=iovdd}
+N 930 -480 930 -450 {
+lab=iovdd}
+N 910 -280 910 -210 {
+lab=pad}
+N 860 -280 910 -280 {
+lab=pad}
+N 1030 -230 1030 -210 {
+lab=iovdd}
+C {sg13g2_pr/sg13_hv_pmos.sym} 840 -340 0 0 {name=M1
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 980 -340 0 0 {name=M2
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1120 -340 0 0 {name=M3
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 690 -340 0 0 {name=M4
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/dpantenna.sym} 620 -390 0 0 {name=D1
+model=dpantenna
+l=0.64u
+w=0.3u
+spiceprefix=X
+}
+C {devices/iopin.sym} 910 -210 1 0 {name=pad lab=pad}
+C {devices/iopin.sym} 930 -480 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 550 -340 2 0 {name=gate lab=gate}
+C {devices/iopin.sym} 1030 -210 1 0 {name=iovss lab=iovss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P2N2D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P2N2D.sym
new file mode 100644
index 00000000..2f710c56
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P2N2D.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 -30 -60 -30 -40 {}
+L 7 -150 0 -130 0 {}
+L 7 -30 40 -30 60 {}
+L 7 130 0 150 0 {}
+B 5 -32.5 -62.5 -27.5 -57.5 {name=iovdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=gate dir=inout}
+B 5 -32.5 57.5 -27.5 62.5 {name=iovss dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+T {sg13g2_Clamp_P2N2D} -69 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} -35 -54 0 1 0.2 0.2 {}
+T {gate} -105 -4 0 1 0.2 0.2 {}
+T {iovss} 5 46 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P8N8D.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P8N8D.sch
new file mode 100644
index 00000000..f886aaf3
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P8N8D.sch
@@ -0,0 +1,471 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -130 -560 -130 -520 {
+lab=pad}
+N 1910 -550 1910 -520 {
+lab=pad}
+N 1780 -550 1780 -520 {
+lab=pad}
+N 1640 -520 1780 -520 {
+lab=pad}
+N 1640 -550 1640 -520 {
+lab=pad}
+N 1500 -520 1640 -520 {
+lab=pad}
+N 1500 -550 1500 -520 {
+lab=pad}
+N 1370 -520 1500 -520 {
+lab=pad}
+N 1370 -550 1370 -520 {
+lab=pad}
+N 1230 -520 1370 -520 {
+lab=pad}
+N 1230 -550 1230 -520 {
+lab=pad}
+N 1090 -520 1230 -520 {
+lab=pad}
+N 1090 -550 1090 -520 {
+lab=pad}
+N 960 -520 1090 -520 {
+lab=pad}
+N 960 -550 960 -520 {
+lab=pad}
+N 820 -520 960 -520 {
+lab=pad}
+N 820 -550 820 -520 {
+lab=pad}
+N 680 -520 820 -520 {
+lab=pad}
+N 680 -550 680 -520 {
+lab=pad}
+N 550 -520 680 -520 {
+lab=pad}
+N 550 -550 550 -520 {
+lab=pad}
+N 410 -520 550 -520 {
+lab=pad}
+N 410 -560 410 -520 {
+lab=pad}
+N 280 -520 410 -520 {
+lab=pad}
+N 280 -560 280 -520 {
+lab=pad}
+N 140 -520 280 -520 {
+lab=pad}
+N 140 -560 140 -520 {
+lab=pad}
+N 0 -520 140 -520 {
+lab=pad}
+N 0 -560 0 -520 {
+lab=pad}
+N -130 -520 0 -520 {
+lab=pad}
+N -130 -660 -130 -620 {
+lab=iovdd}
+N 1780 -660 1910 -660 {
+lab=iovdd}
+N 1910 -640 1910 -610 {
+lab=iovdd}
+N 0 -660 0 -620 {
+lab=iovdd}
+N -60 -660 0 -660 {
+lab=iovdd}
+N -130 -590 -100 -590 {
+lab=iovdd}
+N -100 -660 -100 -590 {
+lab=iovdd}
+N -130 -660 -100 -660 {
+lab=iovdd}
+N -0 -590 30 -590 {
+lab=iovdd}
+N 30 -660 30 -590 {
+lab=iovdd}
+N 0 -660 30 -660 {
+lab=iovdd}
+N 140 -660 140 -620 {
+lab=iovdd}
+N 30 -660 140 -660 {
+lab=iovdd}
+N 140 -590 170 -590 {
+lab=iovdd}
+N 170 -660 170 -590 {
+lab=iovdd}
+N 140 -660 170 -660 {
+lab=iovdd}
+N 280 -660 280 -620 {
+lab=iovdd}
+N 170 -660 280 -660 {
+lab=iovdd}
+N 280 -590 310 -590 {
+lab=iovdd}
+N 310 -660 310 -590 {
+lab=iovdd}
+N 280 -660 310 -660 {
+lab=iovdd}
+N 410 -660 410 -620 {
+lab=iovdd}
+N 310 -660 410 -660 {
+lab=iovdd}
+N 410 -590 440 -590 {
+lab=iovdd}
+N 440 -660 440 -590 {
+lab=iovdd}
+N 410 -660 440 -660 {
+lab=iovdd}
+N 550 -630 550 -610 {
+lab=iovdd}
+N 440 -660 550 -660 {
+lab=iovdd}
+N 550 -580 570 -580 {
+lab=iovdd}
+N 570 -630 570 -580 {
+lab=iovdd}
+N 550 -630 570 -630 {
+lab=iovdd}
+N 550 -660 550 -630 {
+lab=iovdd}
+N 680 -640 680 -610 {
+lab=iovdd}
+N 550 -660 680 -660 {
+lab=iovdd}
+N 680 -580 710 -580 {
+lab=iovdd}
+N 710 -640 710 -580 {
+lab=iovdd}
+N 680 -640 710 -640 {
+lab=iovdd}
+N 680 -660 680 -640 {
+lab=iovdd}
+N 820 -630 820 -610 {
+lab=iovdd}
+N 680 -660 820 -660 {
+lab=iovdd}
+N 820 -580 850 -580 {
+lab=iovdd}
+N 850 -630 850 -580 {
+lab=iovdd}
+N 820 -630 850 -630 {
+lab=iovdd}
+N 820 -660 820 -630 {
+lab=iovdd}
+N 960 -640 960 -610 {
+lab=iovdd}
+N 820 -660 960 -660 {
+lab=iovdd}
+N 960 -580 990 -580 {
+lab=iovdd}
+N 990 -640 990 -580 {
+lab=iovdd}
+N 960 -640 990 -640 {
+lab=iovdd}
+N 960 -660 960 -640 {
+lab=iovdd}
+N 1090 -630 1090 -610 {
+lab=iovdd}
+N 960 -660 1090 -660 {
+lab=iovdd}
+N 1090 -580 1120 -580 {
+lab=iovdd}
+N 1120 -630 1120 -580 {
+lab=iovdd}
+N 1090 -630 1120 -630 {
+lab=iovdd}
+N 1090 -660 1090 -630 {
+lab=iovdd}
+N 1230 -630 1230 -610 {
+lab=iovdd}
+N 1090 -660 1230 -660 {
+lab=iovdd}
+N 1230 -580 1270 -580 {
+lab=iovdd}
+N 1270 -630 1270 -580 {
+lab=iovdd}
+N 1230 -630 1270 -630 {
+lab=iovdd}
+N 1230 -660 1230 -630 {
+lab=iovdd}
+N 1370 -630 1370 -610 {
+lab=iovdd}
+N 1230 -660 1370 -660 {
+lab=iovdd}
+N 1370 -580 1400 -580 {
+lab=iovdd}
+N 1400 -630 1400 -580 {
+lab=iovdd}
+N 1370 -630 1400 -630 {
+lab=iovdd}
+N 1370 -660 1370 -630 {
+lab=iovdd}
+N 1500 -630 1500 -610 {
+lab=iovdd}
+N 1370 -660 1500 -660 {
+lab=iovdd}
+N 1500 -580 1540 -580 {
+lab=iovdd}
+N 1540 -630 1540 -580 {
+lab=iovdd}
+N 1500 -630 1540 -630 {
+lab=iovdd}
+N 1500 -660 1500 -630 {
+lab=iovdd}
+N 1640 -630 1640 -610 {
+lab=iovdd}
+N 1500 -660 1640 -660 {
+lab=iovdd}
+N 1640 -580 1670 -580 {
+lab=iovdd}
+N 1670 -630 1670 -580 {
+lab=iovdd}
+N 1640 -630 1670 -630 {
+lab=iovdd}
+N 1640 -660 1640 -630 {
+lab=iovdd}
+N 1780 -630 1780 -610 {
+lab=iovdd}
+N 1640 -660 1780 -660 {
+lab=iovdd}
+N 1780 -580 1810 -580 {
+lab=iovdd}
+N 1810 -630 1810 -580 {
+lab=iovdd}
+N 1780 -630 1810 -630 {
+lab=iovdd}
+N 1780 -660 1780 -630 {
+lab=iovdd}
+N 1910 -580 1940 -580 {
+lab=iovdd}
+N 1940 -640 1940 -580 {
+lab=iovdd}
+N 1910 -640 1940 -640 {
+lab=iovdd}
+N 1910 -660 1910 -640 {
+lab=iovdd}
+N -200 -590 -170 -590 {
+lab=gate}
+N -210 -590 -210 -450 {
+lab=gate}
+N -250 -590 -210 -590 {
+lab=gate}
+N 1740 -450 1870 -450 {
+lab=gate}
+N 1870 -580 1870 -450 {
+lab=gate}
+N -40 -590 -40 -450 {
+lab=gate}
+N -210 -450 -40 -450 {
+lab=gate}
+N 100 -590 100 -450 {
+lab=gate}
+N -40 -450 100 -450 {
+lab=gate}
+N 240 -590 240 -450 {
+lab=gate}
+N 100 -450 240 -450 {
+lab=gate}
+N 370 -590 370 -450 {
+lab=gate}
+N 240 -450 370 -450 {
+lab=gate}
+N 510 -580 510 -450 {
+lab=gate}
+N 370 -450 510 -450 {
+lab=gate}
+N 640 -580 640 -450 {
+lab=gate}
+N 510 -450 640 -450 {
+lab=gate}
+N 780 -580 780 -450 {
+lab=gate}
+N 640 -450 780 -450 {
+lab=gate}
+N 920 -580 920 -450 {
+lab=gate}
+N 780 -450 920 -450 {
+lab=gate}
+N 1050 -580 1050 -450 {
+lab=gate}
+N 920 -450 1050 -450 {
+lab=gate}
+N 1190 -580 1190 -450 {
+lab=gate}
+N 1050 -450 1190 -450 {
+lab=gate}
+N 1330 -580 1330 -450 {
+lab=gate}
+N 1190 -450 1330 -450 {
+lab=gate}
+N 1460 -580 1460 -450 {
+lab=gate}
+N 1330 -450 1460 -450 {
+lab=gate}
+N 1600 -580 1600 -450 {
+lab=gate}
+N 1460 -450 1600 -450 {
+lab=gate}
+N 1740 -580 1740 -450 {
+lab=gate}
+N 1600 -450 1740 -450 {
+lab=gate}
+N 1890 -520 1910 -520 {
+lab=pad}
+N 1890 -520 1890 -370 {
+lab=pad}
+N 1780 -520 1890 -520 {
+lab=pad}
+N -200 -630 -200 -590 {
+lab=gate}
+N -210 -590 -200 -590 {
+lab=gate}
+N -200 -690 -60 -690 {
+lab=iovdd}
+N -60 -690 -60 -660 {
+lab=iovdd}
+N -100 -660 -60 -660 {
+lab=iovdd}
+N -60 -740 -60 -690 {
+lab=iovdd}
+N 720 -390 720 -350 {
+lab=pad}
+C {sg13g2_pr/sg13_hv_pmos.sym} 530 -580 0 0 {name=M1
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 660 -580 0 0 {name=M2
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 800 -580 0 0 {name=M3
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 940 -580 0 0 {name=M4
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1070 -580 0 0 {name=M5
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1210 -580 0 0 {name=M6
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -150 -590 0 0 {name=M7
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -20 -590 0 0 {name=M8
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 120 -590 0 0 {name=M9
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 260 -590 0 0 {name=M10
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 390 -590 0 0 {name=M11
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1350 -580 0 0 {name=M12
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1480 -580 0 0 {name=M13
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1620 -580 0 0 {name=M14
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1760 -580 0 0 {name=M15
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1890 -580 0 0 {name=M16
+l=0.6u
+w=6.66u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/dpantenna.sym} -200 -660 0 0 {name=D1
+model=dpantenna
+l=0.64u
+w=0.3u
+spiceprefix=X
+}
+C {devices/iopin.sym} -60 -740 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} -250 -590 2 0 {name=gate lab=gate}
+C {devices/iopin.sym} 1890 -370 1 0 {name=pad lab=pad}
+C {devices/iopin.sym} 720 -350 1 0 {name=iovss lab=iovss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P8N8D.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P8N8D.sym
new file mode 100644
index 00000000..4169e96d
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Clamp_P8N8D.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 0 -60 0 -40 {}
+L 7 -150 0 -130 0 {}
+L 7 130 0 150 0 {}
+L 7 0 40 0 60 {}
+B 5 -2.5 -62.5 2.5 -57.5 {name=iovdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=gate dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -2.5 57.5 2.5 62.5 {name=iovss dir=inout}
+T {sg13g2_Clamp_P8N8D} -99 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} 35 -54 0 1 0.2 0.2 {}
+T {gate} -135 6 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {iovss} 35 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCNDiode.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCNDiode.sch
new file mode 100644
index 00000000..f35286fa
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCNDiode.sch
@@ -0,0 +1,46 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -40 -20 10 -20 {
+lab=cathode}
+N 10 30 10 90 {
+lab=cathode}
+N -50 90 10 90 {
+lab=cathode}
+N -140 -20 -100 -20 {
+lab=anode}
+N -140 30 -140 90 {
+lab=anode}
+N -140 90 -110 90 {
+lab=anode}
+N 10 30 50 30 {
+lab=cathode}
+N 10 -20 10 30 {
+lab=cathode}
+N -180 30 -140 30 {
+lab=anode}
+N -140 -20 -140 30 {
+lab=anode}
+N -20 140 40 140 {
+lab=guard}
+N -180 30 -180 50 {
+lab=anode}
+C {sg13g2_pr/dantenna.sym} -70 -20 1 0 {name=D1
+model=dantenna
+l=1.26u
+w=27.78u
+spiceprefix=X
+}
+C {sg13g2_pr/dantenna.sym} -80 90 1 0 {name=D2
+model=dantenna
+w=27.78u
+l=1.26u 
+spiceprefix=X
+}
+C {devices/iopin.sym} 50 30 0 0 {name=cathode lab=cathode}
+C {devices/iopin.sym} -180 50 0 0 {name=anode lab=anode}
+C {devices/iopin.sym} 40 140 0 0 {name=guard lab=guard}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCNDiode.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCNDiode.sym
new file mode 100644
index 00000000..480e767e
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCNDiode.sym
@@ -0,0 +1,25 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -30 130 -30 {}
+L 4 -130 30 130 30 {}
+L 4 -130 -30 -130 30 {}
+L 4 130 -30 130 30 {}
+L 7 130 -20 150 -20 {}
+L 7 -150 0 -130 0 {}
+L 7 130 20 150 20 {}
+B 5 147.5 -22.5 152.5 -17.5 {name=cathode dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=anode dir=inout}
+B 5 147.5 17.5 152.5 22.5 {name=guard dir=inout}
+T {sg13g2_DCNDiode} -85.5 -6 0 0 0.3 0.3 {}
+T {@name} 135 -42 0 0 0.2 0.2 {}
+T {cathode} 125 -24 0 1 0.2 0.2 {}
+T {anode} -95 -14 0 1 0.2 0.2 {}
+T {guard} 125 16 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCPDiode.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCPDiode.sch
new file mode 100644
index 00000000..79e69036
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCPDiode.sch
@@ -0,0 +1,46 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -40 -20 10 -20 {
+lab=cathode}
+N 10 30 10 90 {
+lab=cathode}
+N -50 90 10 90 {
+lab=cathode}
+N -140 -20 -100 -20 {
+lab=anode}
+N -140 30 -140 90 {
+lab=anode}
+N -140 90 -110 90 {
+lab=anode}
+N 10 30 50 30 {
+lab=cathode}
+N 10 -20 10 30 {
+lab=cathode}
+N -180 30 -140 30 {
+lab=anode}
+N -140 -20 -140 30 {
+lab=anode}
+N -20 140 40 140 {
+lab=guard}
+N -180 30 -180 50 {
+lab=anode}
+C {devices/iopin.sym} 50 30 0 0 {name=cathode lab=cathode}
+C {devices/iopin.sym} -180 50 0 0 {name=anode lab=anode}
+C {devices/iopin.sym} 40 140 0 0 {name=guard lab=guard}
+C {sg13g2_pr/dpantenna.sym} -80 90 1 0 {name=D1
+model=dpantenna
+l=1.26u
+w=27.78u
+spiceprefix=X
+}
+C {sg13g2_pr/dpantenna.sym} -70 -20 1 0 {name=D2
+model=dpantenna
+l=1.26u
+w=27.78u
+spiceprefix=X
+}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCPDiode.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCPDiode.sym
new file mode 100644
index 00000000..9e20980c
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_DCPDiode.sym
@@ -0,0 +1,25 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -30 130 -30 {}
+L 4 -130 30 130 30 {}
+L 4 -130 -30 -130 30 {}
+L 4 130 -30 130 30 {}
+L 7 130 -20 150 -20 {}
+L 7 -150 0 -130 0 {}
+L 7 130 20 150 20 {}
+B 5 147.5 -22.5 152.5 -17.5 {name=cathode dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=anode dir=inout}
+B 5 147.5 17.5 152.5 22.5 {name=guard dir=inout}
+T {sg13g2_DCPDiode} -85.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -42 0 0 0.2 0.2 {}
+T {cathode} 125 -24 0 1 0.2 0.2 {}
+T {anode} -95 -14 0 1 0.2 0.2 {}
+T {guard} 125 16 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Gallery.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Gallery.sch
new file mode 100644
index 00000000..01da3dea
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Gallery.sch
@@ -0,0 +1,414 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 2570 -490 2570 -430 {
+lab=vss}
+N 4170 -430 4210 -430 {
+lab=vss}
+N 4210 -470 4210 -430 {
+lab=vss}
+N 4170 -470 4170 -430 {
+lab=vss}
+N 3830 -430 4170 -430 {
+lab=vss}
+N 3830 -470 3830 -430 {
+lab=vss}
+N 3770 -430 3830 -430 {
+lab=vss}
+N 3770 -470 3770 -430 {
+lab=vss}
+N 3410 -430 3770 -430 {
+lab=vss}
+N 3410 -470 3410 -430 {
+lab=vss}
+N 3350 -430 3410 -430 {
+lab=vss}
+N 3350 -470 3350 -430 {
+lab=vss}
+N 3000 -430 3350 -430 {
+lab=vss}
+N 3000 -490 3000 -430 {
+lab=vss}
+N 2940 -430 3000 -430 {
+lab=vss}
+N 2940 -490 2940 -430 {
+lab=vss}
+N 2610 -430 2940 -430 {
+lab=vss}
+N 2570 -710 2570 -610 {
+lab=vdd}
+N 3770 -710 4210 -710 {
+lab=vdd}
+N 4210 -710 4210 -630 {
+lab=vdd}
+N 3770 -710 3770 -630 {
+lab=vdd}
+N 3350 -710 3770 -710 {
+lab=vdd}
+N 3350 -710 3350 -630 {
+lab=vdd}
+N 2940 -710 3350 -710 {
+lab=vdd}
+N 2940 -710 2940 -610 {
+lab=vdd}
+N 2870 -710 2940 -710 {
+lab=vdd}
+N 2610 -690 2610 -610 {
+lab=iovdd}
+N 3830 -690 4170 -690 {
+lab=iovdd}
+N 4170 -690 4170 -630 {
+lab=iovdd}
+N 3830 -690 3830 -630 {
+lab=iovdd}
+N 3410 -690 3830 -690 {
+lab=iovdd}
+N 3410 -690 3410 -630 {
+lab=iovdd}
+N 3170 -690 3410 -690 {
+lab=iovdd}
+N 3000 -690 3000 -610 {
+lab=iovdd}
+N 2610 -690 3000 -690 {
+lab=iovdd}
+N 3230 -930 3230 -550 {
+lab=iopadout4ma_c2p}
+N 3650 -880 3650 -550 {
+lab=iopadout16ma_c2p}
+N 4040 -860 4040 -550 {
+lab=iopadout30ma_c2p}
+N 4860 -430 4900 -430 {
+lab=vss}
+N 4900 -500 4900 -430 {
+lab=vss}
+N 4860 -500 4860 -430 {
+lab=vss}
+N 4570 -430 4860 -430 {
+lab=vss}
+N 4530 -430 4570 -430 {
+lab=vss}
+N 4530 -500 4530 -430 {
+lab=vss}
+N 4210 -430 4530 -430 {
+lab=vss}
+N 5210 -490 5210 -430 {
+lab=vss}
+N 5150 -430 5210 -430 {
+lab=vss}
+N 5150 -490 5150 -430 {
+lab=vss}
+N 4900 -430 5150 -430 {
+lab=vss}
+N 4860 -710 5150 -710 {
+lab=vdd}
+N 5150 -710 5150 -650 {
+lab=vdd}
+N 4860 -710 4860 -620 {
+lab=vdd}
+N 4530 -710 4860 -710 {
+lab=vdd}
+N 4530 -710 4530 -620 {
+lab=vdd}
+N 4210 -710 4530 -710 {
+lab=vdd}
+N 4900 -690 5210 -690 {
+lab=iovdd}
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+lab=iovdd}
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+lab=vss}
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+lab=vss}
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+lab=vss}
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+lab=vss}
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+lab=vss}
+N 5210 -430 5210 -60 {
+lab=vss}
+N 2620 -310 2620 -280 {
+lab=vdd}
+N 4400 -310 4790 -310 {
+lab=vdd}
+N 4790 -310 4790 -300 {
+lab=vdd}
+N 4400 -310 4400 -290 {
+lab=vdd}
+N 3960 -310 4400 -310 {
+lab=vdd}
+N 3960 -290 3970 -290 {
+lab=vdd}
+N 3960 -310 3960 -290 {
+lab=vdd}
+N 3490 -310 3960 -310 {
+lab=vdd}
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+lab=vdd}
+N 3070 -310 3490 -310 {
+lab=vdd}
+N 3070 -310 3070 -280 {
+lab=vdd}
+N 2780 -310 3070 -310 {
+lab=vdd}
+N 2680 -330 2680 -280 {
+lab=iovdd}
+N 4440 -330 4850 -330 {
+lab=iovdd}
+N 4850 -330 4850 -290 {
+lab=iovdd}
+N 4440 -330 4440 -290 {
+lab=iovdd}
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+lab=iovdd}
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+lab=iovdd}
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+lab=iovdd}
+N 3550 -330 4010 -330 {
+lab=iovdd}
+N 3550 -330 3550 -280 {
+lab=iovdd}
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+lab=iovdd}
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+lab=iovdd}
+N 2680 -330 3130 -330 {
+lab=iovdd}
+N 3170 -690 3170 -330 {
+lab=iovdd}
+N 3080 -690 3170 -690 {
+lab=iovdd}
+N 3130 -330 3170 -330 {
+lab=iovdd}
+N 2780 -710 2780 -310 {
+lab=vdd}
+N 2570 -710 2780 -710 {
+lab=vdd}
+N 2620 -310 2780 -310 {
+lab=vdd}
+N 2610 -490 2610 -430 {
+lab=vss}
+N 2570 -430 2610 -430 {
+lab=vss}
+N 3420 -60 3420 20 {
+lab=vss}
+N 3130 -60 3420 -60 {
+lab=vss}
+N 3080 -770 3080 -690 {
+lab=iovdd}
+N 3000 -690 3080 -690 {
+lab=iovdd}
+N 2870 -770 2870 -710 {
+lab=vdd}
+N 2780 -710 2870 -710 {
+lab=vdd}
+N 2640 -780 2640 -760 {
+lab=vss}
+N 2640 -760 2700 -760 {
+lab=vss}
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+lab=vss}
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+lab=vss}
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+lab=vss}
+N 2430 -760 2430 -430 {
+lab=vss}
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+lab=iovdd}
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+lab=iovdd}
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+lab=iovdd}
+N 3080 -830 3080 -770 {
+lab=iovdd}
+N 2640 -960 2640 -940 {
+lab=vdd}
+N 2640 -960 2920 -960 {
+lab=vdd}
+N 2920 -960 2920 -770 {
+lab=vdd}
+N 2870 -770 2920 -770 {
+lab=vdd}
+N 2870 -820 2870 -770 {
+lab=vdd}
+N 2470 -860 2520 -860 {
+lab=iopadin_p2c}
+N 2820 -860 2850 -860 {
+lab=iopadin_pad}
+N 2850 -990 2850 -860 {
+lab=iopadin_pad}
+N 3530 -850 3530 -550 {
+lab=iopadout4ma_pad}
+N 3950 -800 3950 -550 {
+lab=iopadout16ma_pad}
+N 4340 -830 4340 -550 {
+lab=iopadout30ma_pad}
+N 2800 -190 2800 -0 {
+lab=iopadtriout4ma_pad}
+N 3250 -190 3250 -0 {
+lab=iopadtriout16ma_pad}
+N 3670 -190 3670 0 {
+lab=iopadtriout30ma_pad}
+N 4140 -220 4170 -220 {
+lab=iopadinout4ma_pad}
+N 4170 -220 4170 0 {
+lab=iopadinout4ma_pad}
+N 4570 -220 4610 -220 {
+lab=iopadinout16ma_pad}
+N 4610 -220 4610 0 {
+lab=iopadinout16ma_pad}
+N 4970 -230 5030 -230 {
+lab=iopadinout30ma_pad}
+N 5030 -230 5030 0 {
+lab=iopadinout30ma_pad}
+N 4140 -160 4140 0 {
+lab=iopadinout4ma_p2c}
+N 4570 -160 4570 -0 {
+lab=iopadinout16ma_p2c}
+N 4970 -170 4970 0 {
+lab=iopadinout30ma_p2c}
+N 2500 -170 2500 0 {
+lab=iopadtriout4ma_c2p}
+N 2460 -210 2500 -210 {
+lab=iopadtriout4ma_c2p_en}
+N 2460 -210 2460 0 {
+lab=iopadtriout4ma_c2p_en}
+N 2950 -170 2950 0 {
+lab=iopadtriout16ma_c2p}
+N 2900 -210 2950 -210 {
+lab=iopadtriout16ma_c2p_en}
+N 2900 -210 2900 0 {
+lab=iopadtriout16ma_c2p_en}
+N 3370 -170 3370 -0 {
+lab=iopadtriout30ma_c2p}
+N 3320 -210 3370 -210 {
+lab=iopadtriout30ma_c2p_en}
+N 3320 -210 3320 0 {
+lab=iopadtriout30ma_c2p_en}
+N 3840 -170 3840 0 {
+lab=iopadinout4ma_c2p}
+N 3780 -210 3840 -210 {
+lab=iopadinout4ma_c2p_en}
+N 3780 -210 3780 0 {
+lab=iopadinout4ma_c2p_en}
+N 4270 -170 4270 0 {
+lab=iopadinout16ma_c2p}
+N 4220 -210 4270 -210 {
+lab=iopadinout16ma_c2p_en}
+N 4220 -210 4220 0 {
+lab=iopadinout16ma_c2p_en}
+N 4670 -180 4670 0 {
+lab=iopadinout30ma_c2p}
+N 4640 -220 4670 -220 {
+lab=iopadinout30ma_c2p_en}
+N 4640 -220 4640 0 {
+lab=iopadinout30ma_c2p_en}
+N 5330 -580 5430 -580 {
+lab=ana_out}
+N 5330 -560 5430 -560 {
+lab=ana_outres}
+N 4570 -500 4570 -430 {
+lab=vss}
+C {sg13g2_IOPadVSS.sym} 2590 -550 0 0 {name=x1}
+C {sg13g2_IOPadVdd.sym} 2970 -550 0 0 {name=x2}
+C {sg13g2_IOPadOut4mA.sym} 3380 -550 0 0 {name=x3}
+C {sg13g2_IOPadOut16mA.sym} 3800 -550 0 0 {name=x4}
+C {sg13g2_IOPadOut30mA.sym} 4190 -550 0 0 {name=x5}
+C {sg13g2_IOPadTriOut4mA.sym} 2650 -190 0 0 {name=x6}
+C {sg13g2_IOPadTriOut16mA.sym} 3100 -190 0 0 {name=x7}
+C {sg13g2_IOPadTriOut30mA.sym} 3520 -190 0 0 {name=x8}
+C {sg13g2_IOPadInOut4mA.sym} 3990 -190 0 0 {name=x9}
+C {sg13g2_IOPadInOut16mA.sym} 4420 -190 0 0 {name=x10}
+C {sg13g2_IOPadInOut30mA.sym} 4820 -200 0 0 {name=x11}
+C {sg13g2_IOPadIOVss.sym} 4550 -560 0 0 {name=x12}
+C {sg13g2_IOPadIOVdd.sym} 4880 -560 0 0 {name=x13}
+C {sg13g2_IOPadAnalog.sym} 5180 -570 0 0 {name=x14}
+C {devices/iopin.sym} 2870 -820 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 3080 -830 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 3420 20 1 0 {name=vss lab=vss}
+C {sg13g2_IOPadIn.sym} 2670 -860 0 0 {name=x15}
+C {devices/iopin.sym} 2850 -990 3 0 {name=iopadin_pad lab=iopadin_pad}
+C {devices/iopin.sym} 3530 -850 3 0 {name=iopadout4ma_pad lab=iopadout4ma_pad}
+C {devices/iopin.sym} 3950 -800 3 0 {name=iopadout16ma_pad lab=iopadout16ma_pad}
+C {devices/iopin.sym} 4340 -830 3 0 {name=iopadout30ma_pad lab=iopadout30ma_pad}
+C {devices/iopin.sym} 2800 0 1 0 {name=iopadtriout4ma_pad lab=iopadtriout4ma_pad}
+C {devices/iopin.sym} 3250 0 1 0 {name=iopadtriout16ma_pad lab=iopadtriout16ma_pad}
+C {devices/iopin.sym} 3670 0 1 0 {name=iopadtriout30ma_pad lab=iopadtriout30ma_pad}
+C {devices/iopin.sym} 4170 0 1 0 {name=iopadinout4ma_pad lab=iopadinout4ma_pad}
+C {devices/iopin.sym} 4610 0 1 0 {name=iopadinout16ma_pad lab=iopadinout16ma_pad}
+C {devices/iopin.sym} 5030 0 1 0 {name=iopadinout30ma_pad lab=iopadinout30ma_pad}
+C {devices/iopin.sym} 2470 -860 2 0 {name=iopadin_p2c lab=iopadin_p2c}
+C {devices/iopin.sym} 3230 -930 3 0 {name=iopadout4ma_c2p lab=iopadout4ma_c2p}
+C {devices/iopin.sym} 3650 -880 3 0 {name=iopadout16ma_c2p lab=iopadout16ma_c2p}
+C {devices/iopin.sym} 4040 -860 3 0 {name=iopadout30ma_c2p lab=iopadout30ma_c2p}
+C {devices/iopin.sym} 4140 0 1 0 {name=iopadinout4ma_p2c lab=iopadinout4ma_p2c}
+C {devices/iopin.sym} 4570 0 1 0 {name=iopadinout16ma_p2c lab=iopadinout16ma_p2c}
+C {devices/iopin.sym} 4970 0 1 0 {name=iopadinout30ma_p2c lab=iopadinout30ma_p2c}
+C {devices/iopin.sym} 2500 0 1 0 {name=iopadtriout4ma_c2p lab=iopadtriout4ma_c2p}
+C {devices/iopin.sym} 2460 0 1 0 {name=iopadtriout4ma_c2p_en lab=iopadtriout4ma_c2p_en}
+C {devices/iopin.sym} 2950 0 1 0 {name=iopadtriout16ma_c2p lab=iopadtriout16ma_c2p}
+C {devices/iopin.sym} 2900 0 1 0 {name=iopadtriout16ma_c2p_en lab=iopadtriout16ma_c2p_en}
+C {devices/iopin.sym} 3370 0 1 0 {name=iopadtriout30ma_c2p lab=iopadtriout30ma_c2p}
+C {devices/iopin.sym} 3320 0 1 0 {name=iopadtriout30ma_c2p_en lab=iopadtriout30ma_c2p_en}
+C {devices/iopin.sym} 3840 0 1 0 {name=iopadinout4ma_c2p lab=iopadinout4ma_c2p}
+C {devices/iopin.sym} 3780 0 1 0 {name=iopadinout4ma_c2p_en lab=iopadinout4ma_c2p_en}
+C {devices/iopin.sym} 4270 0 1 0 {name=iopadinout16ma_c2p lab=iopadinout16ma_c2p}
+C {devices/iopin.sym} 4220 0 1 0 {name=iopadinout16ma_c2p_en lab=iopadinout16ma_c2p_en}
+C {devices/iopin.sym} 4670 0 1 0 {name=iopadinout30ma_c2p lab=iopadinout30ma_c2p}
+C {devices/iopin.sym} 4640 0 1 0 {name=iopadinout30ma_c2p_en lab=iopadinout30ma_c2p_en}
+C {devices/iopin.sym} 5430 -580 0 0 {name=ana_out lab=ana_out}
+C {devices/iopin.sym} 5430 -560 0 0 {name=ana_outres lab=ana_outres}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Gallery.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Gallery.sym
new file mode 100644
index 00000000..1b7fb7cc
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_Gallery.sym
@@ -0,0 +1,118 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -340 130 -340 {}
+L 4 -130 340 130 340 {}
+L 4 -130 -340 -130 340 {}
+L 4 130 -340 130 340 {}
+L 7 130 -270 150 -270 {}
+L 7 -150 -270 -130 -270 {}
+L 7 -150 -240 -130 -240 {}
+L 7 -150 -200 -130 -200 {}
+L 7 130 -240 150 -240 {}
+L 7 130 -200 150 -200 {}
+L 7 130 -160 150 -160 {}
+L 7 30 -360 30 -340 {}
+L 7 -40 -360 -40 -340 {}
+L 7 130 -120 150 -120 {}
+L 7 130 0 150 0 {}
+L 7 130 -40 150 -40 {}
+L 7 -150 0 -130 0 {}
+L 7 -150 -120 -130 -120 {}
+L 7 -150 -40 -130 -40 {}
+L 7 -150 280 -130 280 {}
+L 7 -150 240 -130 240 {}
+L 7 130 -80 150 -80 {}
+L 7 130 40 150 40 {}
+L 7 -150 120 -130 120 {}
+L 7 -150 200 -130 200 {}
+L 7 130 80 150 80 {}
+L 7 -150 80 -130 80 {}
+L 7 -150 160 -130 160 {}
+L 7 130 120 150 120 {}
+L 7 -150 -160 -130 -160 {}
+L 7 130 160 150 160 {}
+L 7 130 190 150 190 {}
+L 7 130 220 150 220 {}
+L 7 -150 -80 -130 -80 {}
+L 7 -150 40 -130 40 {}
+L 7 130 260 150 260 {}
+L 7 130 290 150 290 {}
+L 7 0 340 0 360 {}
+B 5 147.5 -272.5 152.5 -267.5 {name=iopadin_pad dir=inout}
+B 5 -152.5 -272.5 -147.5 -267.5 {name=iopadout4ma_c2p dir=inout}
+B 5 -152.5 -242.5 -147.5 -237.5 {name=iopadout16ma_c2p dir=inout}
+B 5 -152.5 -202.5 -147.5 -197.5 {name=iopadout30ma_c2p dir=inout}
+B 5 147.5 -242.5 152.5 -237.5 {name=iopadin_p2c dir=inout}
+B 5 147.5 -202.5 152.5 -197.5 {name=iopadout4ma_pad dir=inout}
+B 5 147.5 -162.5 152.5 -157.5 {name=iopadout30ma_pad dir=inout}
+B 5 27.5 -362.5 32.5 -357.5 {name=iovdd dir=inout}
+B 5 -42.5 -362.5 -37.5 -357.5 {name=vdd dir=inout}
+B 5 147.5 -122.5 152.5 -117.5 {name=iopadout16ma_pad dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=ana_out dir=inout}
+B 5 147.5 -42.5 152.5 -37.5 {name=ana_outres dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=iopadinout16ma_c2p_en dir=inout}
+B 5 -152.5 -122.5 -147.5 -117.5 {name=iopadinout16ma_c2p dir=inout}
+B 5 -152.5 -42.5 -147.5 -37.5 {name=iopadinout4ma_c2p_en dir=inout}
+B 5 -152.5 277.5 -147.5 282.5 {name=iopadtriout30ma_c2p_en dir=inout}
+B 5 -152.5 237.5 -147.5 242.5 {name=iopadtriout16ma_c2p_en dir=inout}
+B 5 147.5 -82.5 152.5 -77.5 {name=iopadinout30ma_pad dir=inout}
+B 5 147.5 37.5 152.5 42.5 {name=iopadinout16ma_pad dir=inout}
+B 5 -152.5 117.5 -147.5 122.5 {name=iopadtriout16ma_c2p dir=inout}
+B 5 -152.5 197.5 -147.5 202.5 {name=iopadtriout4ma_c2p_en dir=inout}
+B 5 147.5 77.5 152.5 82.5 {name=iopadinout4ma_pad dir=inout}
+B 5 -152.5 77.5 -147.5 82.5 {name=iopadtriout4ma_c2p dir=inout}
+B 5 -152.5 157.5 -147.5 162.5 {name=iopadtriout30ma_c2p dir=inout}
+B 5 147.5 117.5 152.5 122.5 {name=iopadinout30ma_p2c dir=inout}
+B 5 -152.5 -162.5 -147.5 -157.5 {name=iopadinout4ma_c2p dir=inout}
+B 5 147.5 157.5 152.5 162.5 {name=iopadtriout30ma_pad dir=inout}
+B 5 147.5 187.5 152.5 192.5 {name=iopadinout16ma_p2c dir=inout}
+B 5 147.5 217.5 152.5 222.5 {name=iopadinout4ma_p2c dir=inout}
+B 5 -152.5 -82.5 -147.5 -77.5 {name=iopadinout30ma_c2p dir=inout}
+B 5 -152.5 37.5 -147.5 42.5 {name=iopadinout30ma_c2p_en dir=inout}
+B 5 147.5 257.5 152.5 262.5 {name=iopadtriout16ma_pad dir=inout}
+B 5 147.5 287.5 152.5 292.5 {name=iopadtriout4ma_pad dir=inout}
+B 5 -2.5 357.5 2.5 362.5 {name=vss dir=inout}
+T {sg13g2_Gallery} -21 -26 0 0 0.2 0.2 {}
+T {@name} 135 -352 0 0 0.2 0.2 {}
+T {iopadin_pad} 125 -274 0 1 0.2 0.2 {}
+T {iopadout4ma_c2p} -35 -274 0 1 0.2 0.2 {}
+T {iopadout16ma_c2p} -25 -244 0 1 0.2 0.2 {}
+T {iopadout30ma_c2p} -25 -204 0 1 0.2 0.2 {}
+T {iopadin_p2c} 125 -244 0 1 0.2 0.2 {}
+T {iopadout4ma_pad} 125 -204 0 1 0.2 0.2 {}
+T {iopadout30ma_pad} 125 -164 0 1 0.2 0.2 {}
+T {iovdd} 45 -334 0 1 0.2 0.2 {}
+T {vdd} -35 -334 0 1 0.2 0.2 {}
+T {iopadout16ma_pad} 125 -124 0 1 0.2 0.2 {}
+T {ana_out} 125 -4 0 1 0.2 0.2 {}
+T {ana_outres} 125 -44 0 1 0.2 0.2 {}
+T {iopadinout16ma_c2p_en} 5 -4 0 1 0.2 0.2 {}
+T {iopadinout16ma_c2p} -15 -124 0 1 0.2 0.2 {}
+T {iopadinout4ma_c2p_en} -5 -44 0 1 0.2 0.2 {}
+T {iopadtriout30ma_c2p_en} 5 276 0 1 0.2 0.2 {}
+T {iopadtriout16ma_c2p_en} 5 236 0 1 0.2 0.2 {}
+T {iopadinout30ma_pad} 125 -84 0 1 0.2 0.2 {}
+T {iopadinout16ma_pad} 125 36 0 1 0.2 0.2 {}
+T {iopadtriout16ma_c2p} -15 116 0 1 0.2 0.2 {}
+T {iopadtriout4ma_c2p_en} 5 196 0 1 0.2 0.2 {}
+T {iopadinout4ma_pad} 125 76 0 1 0.2 0.2 {}
+T {iopadtriout4ma_c2p} -15 76 0 1 0.2 0.2 {}
+T {iopadtriout30ma_c2p} -15 156 0 1 0.2 0.2 {}
+T {iopadinout30ma_p2c} 125 116 0 1 0.2 0.2 {}
+T {iopadinout4ma_c2p} -15 -164 0 1 0.2 0.2 {}
+T {iopadtriout30ma_pad} 125 156 0 1 0.2 0.2 {}
+T {iopadinout16ma_p2c} 125 186 0 1 0.2 0.2 {}
+T {iopadinout4ma_p2c} 125 216 0 1 0.2 0.2 {}
+T {iopadinout30ma_c2p} -15 -84 0 1 0.2 0.2 {}
+T {iopadinout30ma_c2p_en} 5 36 0 1 0.2 0.2 {}
+T {iopadtriout16ma_pad} 125 256 0 1 0.2 0.2 {}
+T {iopadtriout4ma_pad} 125 286 0 1 0.2 0.2 {}
+T {vss} 5 326 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateDecode.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateDecode.sch
new file mode 100644
index 00000000..0971d839
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateDecode.sch
@@ -0,0 +1,107 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -360 -210 -260 -210 {
+lab=#net1}
+N -80 -200 60 -200 {
+lab=#net2}
+N -320 20 -130 20 {
+lab=#net3}
+N 170 20 460 20 {
+lab=pgate}
+N 360 -200 450 -200 {
+lab=ngate}
+N -670 -210 -600 -210 {
+lab=en}
+N -670 -210 -670 0 {
+lab=en}
+N -720 -210 -670 -210 {
+lab=en}
+N -670 0 -560 -0 {
+lab=en}
+N -610 40 -560 40 {
+lab=core}
+N -610 -100 -610 40 {
+lab=core}
+N -740 40 -610 40 {
+lab=core}
+N -610 -100 -260 -100 {
+lab=core}
+N -260 -190 -260 -100 {
+lab=core}
+N -490 -170 -490 -120 {
+lab=vss}
+N -170 -120 200 -120 {
+lab=vss}
+N 200 -140 200 -120 {
+lab=vss}
+N -210 -140 -210 -120 {
+lab=vss}
+N -490 -120 -210 -120 {
+lab=vss}
+N -460 100 -460 140 {
+lab=vss}
+N -170 140 10 140 {
+lab=vss}
+N 10 80 10 140 {
+lab=vss}
+N -170 -120 -170 140 {
+lab=vss}
+N -210 -120 -170 -120 {
+lab=vss}
+N -220 140 -170 140 {
+lab=vss}
+N -490 -340 -490 -260 {
+lab=vdd}
+N -30 -340 200 -340 {
+lab=vdd}
+N 200 -340 200 -260 {
+lab=vdd}
+N -210 -340 -210 -260 {
+lab=vdd}
+N -490 -340 -210 -340 {
+lab=vdd}
+N -460 -80 -460 -60 {
+lab=vdd}
+N -30 -80 10 -80 {
+lab=vdd}
+N 10 -80 10 -40 {
+lab=vdd}
+N -30 -340 -30 -80 {
+lab=vdd}
+N -120 -340 -30 -340 {
+lab=vdd}
+N -460 -80 -30 -80 {
+lab=vdd}
+N 70 -280 70 -40 {
+lab=iovdd}
+N 70 -280 260 -280 {
+lab=iovdd}
+N 260 -280 260 -260 {
+lab=iovdd}
+N -220 140 -220 200 {
+lab=vss}
+N -460 140 -220 140 {
+lab=vss}
+N -120 -390 -120 -340 {
+lab=vdd}
+N -210 -340 -120 -340 {
+lab=vdd}
+N 260 -350 260 -280 {
+lab=iovdd}
+C {sg13g2_io_inv_x1.sym} -450 -210 0 0 {name=x1}
+C {sg13g2_io_nor2_x1.sym} -120 -200 0 0 {name=x2}
+C {sg13g2_LevelUp.sym} 20 20 0 0 {name=x3}
+C {sg13g2_io_nand2_x1.sym} -410 20 0 0 {name=x4}
+C {sg13g2_LevelUp.sym} 210 -200 0 0 {name=x5}
+C {devices/ipin.sym} -720 -210 0 0 {name=en lab=en}
+C {devices/ipin.sym} -740 40 0 0 {name=core lab=core}
+C {devices/iopin.sym} -220 200 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} -120 -390 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 260 -350 0 0 {name=iovdd lab=iovdd}
+C {devices/opin.sym} 450 -200 0 0 {name=ngate lab=ngate}
+C {devices/opin.sym} 460 20 0 0 {name=pgate lab=pgate}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateDecode.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateDecode.sym
new file mode 100644
index 00000000..8a65f84c
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateDecode.sym
@@ -0,0 +1,37 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -50 130 -50 {}
+L 4 -130 50 130 50 {}
+L 4 -130 -50 -130 50 {}
+L 4 130 -50 130 50 {}
+L 4 -150 -20 -130 -20 {}
+L 4 130 -20 150 -20 {}
+L 4 130 20 150 20 {}
+L 4 -150 20 -130 20 {}
+L 7 -20 -70 -20 -50 {}
+L 7 20 -70 20 -50 {}
+L 7 -20 50 -20 70 {}
+B 5 -22.5 -72.5 -17.5 -67.5 {name=vdd dir=inout}
+B 5 17.5 -72.5 22.5 -67.5 {name=iovdd dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=en dir=in}
+B 5 147.5 -22.5 152.5 -17.5 {name=ngate dir=out}
+B 5 147.5 17.5 152.5 22.5 {name=pgate dir=out}
+B 5 -152.5 17.5 -147.5 22.5 {name=core dir=in}
+B 5 -22.5 67.5 -17.5 72.5 {name=vss dir=inout}
+T {@symname} -94.5 -6 0 0 0.3 0.3 {}
+T {@name} 135 -62 0 0 0.2 0.2 {}
+T {vdd} -15 -44 0 1 0.2 0.2 {}
+T {iovdd} 35 -44 0 1 0.2 0.2 {}
+T {en} -125 -24 0 0 0.2 0.2 {}
+T {ngate} 125 -24 0 1 0.2 0.2 {}
+T {pgate} 125 16 0 1 0.2 0.2 {}
+T {core} -125 16 0 0 0.2 0.2 {}
+T {vss} -15 36 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateLevelUpInv.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateLevelUpInv.sch
new file mode 100644
index 00000000..f1c96c4b
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateLevelUpInv.sch
@@ -0,0 +1,59 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1030 -440 1030 -400 {
+lab=vss}
+N 1410 -400 1500 -400 {
+lab=vss}
+N 1500 -440 1500 -400 {
+lab=vss}
+N 1080 -610 1080 -580 {
+lab=iovdd}
+N 1530 -610 1550 -610 {
+lab=iovdd}
+N 1550 -610 1550 -580 {
+lab=iovdd}
+N 1500 -640 1500 -580 {
+lab=vdd}
+N 1180 -640 1500 -640 {
+lab=vdd}
+N 1030 -640 1030 -580 {
+lab=vdd}
+N 860 -510 900 -510 {
+lab=core}
+N 860 -510 860 -340 {
+lab=core}
+N 810 -510 860 -510 {
+lab=core}
+N 860 -340 1370 -340 {
+lab=core}
+N 1370 -510 1370 -340 {
+lab=core}
+N 1200 -510 1250 -510 {
+lab=#net1}
+N 1670 -510 1710 -510 {
+lab=pgate}
+N 1180 -690 1180 -640 {
+lab=vdd}
+N 1030 -640 1180 -640 {
+lab=vdd}
+N 1530 -680 1530 -610 {
+lab=iovdd}
+N 1080 -610 1530 -610 {
+lab=iovdd}
+N 1410 -400 1410 -310 {
+lab=vss}
+N 1030 -400 1410 -400 {
+lab=vss}
+C {sg13g2_LevelUpInv.sym} 1050 -510 0 0 {name=x1}
+C {sg13g2_LevelUpInv.sym} 1520 -510 0 0 {name=x2}
+C {devices/iopin.sym} 1180 -690 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1530 -680 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 810 -510 2 0 {name=core lab=core}
+C {devices/iopin.sym} 1410 -310 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 1710 -510 0 0 {name=pgate lab=pgate}
+C {devices/iopin.sym} 1250 -510 0 0 {name=ngate lab=ngate}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateLevelUpInv.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateLevelUpInv.sym
new file mode 100644
index 00000000..266bbd3c
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_GateLevelUpInv.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 -30 -80 -30 -60 {}
+L 7 20 -80 20 -60 {}
+L 7 130 -20 150 -20 {}
+L 7 130 20 150 20 {}
+L 7 -150 0 -130 0 {}
+L 7 0 60 0 80 {}
+B 5 -32.5 -82.5 -27.5 -77.5 {name=vdd dir=inout}
+B 5 17.5 -82.5 22.5 -77.5 {name=iovdd dir=inout}
+B 5 147.5 -22.5 152.5 -17.5 {name=ngate dir=inout}
+B 5 147.5 17.5 152.5 22.5 {name=pgate dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=core dir=inout}
+B 5 -2.5 77.5 2.5 82.5 {name=vss dir=inout}
+T {sg13g2_GateLevelUpInv} -72.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {vdd} -45 -74 0 1 0.2 0.2 {}
+T {iovdd} 55 -74 0 1 0.2 0.2 {}
+T {ngate} 125 -24 0 1 0.2 0.2 {}
+T {pgate} 125 16 0 1 0.2 0.2 {}
+T {core} -105 -4 0 1 0.2 0.2 {}
+T {vss} 25 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadAnalog.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadAnalog.sch
new file mode 100644
index 00000000..fa125d92
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadAnalog.sch
@@ -0,0 +1,106 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 2660 -380 2660 -330 {
+lab=iovss}
+N 2810 -530 2860 -530 {
+lab=pad}
+N 2860 -310 2860 -280 {
+lab=pad}
+N 2810 -280 2860 -280 {
+lab=pad}
+N 2660 -600 2660 -580 {
+lab=iovdd}
+N 2490 -600 2660 -600 {
+lab=iovdd}
+N 2490 -600 2490 -190 {
+lab=iovdd}
+N 2490 -190 2660 -190 {
+lab=iovdd}
+N 2660 -230 2660 -190 {
+lab=iovdd}
+N 2660 -430 2940 -430 {
+lab=iovss}
+N 2660 -480 2660 -430 {
+lab=iovss}
+N 3240 -480 3240 -450 {
+lab=pad}
+N 2860 -500 3240 -500 {
+lab=pad}
+N 2860 -530 2860 -500 {
+lab=pad}
+N 3240 -410 3280 -410 {
+lab=iovdd}
+N 3280 -600 3280 -410 {
+lab=iovdd}
+N 3090 -600 3280 -600 {
+lab=iovdd}
+N 2860 -310 2940 -310 {
+lab=pad}
+N 2860 -500 2860 -310 {
+lab=pad}
+N 3240 -330 3280 -330 {
+lab=iovdd}
+N 3280 -410 3280 -330 {
+lab=iovdd}
+N 3540 -600 3540 -450 {
+lab=iovdd}
+N 3280 -600 3540 -600 {
+lab=iovdd}
+N 3540 -330 3540 -290 {
+lab=iovss}
+N 3390 -290 3540 -290 {
+lab=iovss}
+N 2660 -380 2900 -380 {
+lab=iovss}
+N 2660 -430 2660 -380 {
+lab=iovss}
+N 2900 -380 2900 -250 {
+lab=iovss}
+N 3230 -250 3390 -250 {
+lab=iovss}
+N 3390 -290 3390 -250 {
+lab=iovss}
+N 3240 -290 3390 -290 {
+lab=iovss}
+N 3230 -250 3230 -170 {
+lab=iovss}
+N 2900 -250 3230 -250 {
+lab=iovss}
+N 3090 -670 3090 -600 {
+lab=iovdd}
+N 2660 -600 3090 -600 {
+lab=iovdd}
+N 3350 -480 3380 -480 {
+lab=pad}
+N 3240 -500 3240 -480 {
+lab=pad}
+N 3380 -480 3380 -390 {
+lab=pad}
+N 3690 -390 3750 -390 {
+lab=padres}
+N 3350 -530 3350 -480 {
+lab=pad}
+N 3240 -480 3350 -480 {
+lab=pad}
+N 3220 -670 3220 -630 {
+lab=vdd}
+N 3340 -200 3340 -170 {
+lab=vss}
+N 3380 -390 3390 -390 {
+lab=pad}
+C {sg13g2_DCNDiode.sym} 3090 -430 0 0 {name=x3}
+C {sg13g2_DCPDiode.sym} 3090 -310 0 0 {name=x4}
+C {sg13g2_SecondaryProtection.sym} 3540 -390 0 0 {}
+C {sg13g2_Clamp_N20N0D.sym} 2660 -530 0 0 {name=x1}
+C {sg13g2_Clamp_P20N0D.sym} 2660 -280 2 1 {name=x2}
+C {devices/iopin.sym} 3750 -390 0 0 {name=padres lab=padres}
+C {devices/iopin.sym} 3230 -170 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 3090 -670 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 3350 -530 3 0 {name=pad lab=pad}
+C {devices/iopin.sym} 3220 -670 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 3340 -170 1 0 {name=vss lab=vss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadAnalog.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadAnalog.sym
new file mode 100644
index 00000000..b4e02a17
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadAnalog.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 -30 -80 -30 -60 {}
+L 7 30 -80 30 -60 {}
+L 7 130 -10 150 -10 {}
+L 7 130 10 150 10 {}
+L 7 -30 60 -30 80 {}
+L 7 30 60 30 80 {}
+B 5 -32.5 -82.5 -27.5 -77.5 {name=vdd dir=inout}
+B 5 27.5 -82.5 32.5 -77.5 {name=iovdd dir=inout}
+B 5 147.5 -12.5 152.5 -7.5 {name=pad dir=inout}
+B 5 147.5 7.5 152.5 12.5 {name=padres dir=inout}
+B 5 -32.5 77.5 -27.5 82.5 {name=vss dir=inout}
+B 5 27.5 77.5 32.5 82.5 {name=iovss dir=inout}
+T {sg13g2_IOPadAnalog} -69 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {vdd} -15 -54 0 1 0.2 0.2 {}
+T {iovdd} 45 -54 0 1 0.2 0.2 {}
+T {pad} 125 -14 0 1 0.2 0.2 {}
+T {padres} 125 6 0 1 0.2 0.2 {}
+T {vss} -25 46 0 1 0.2 0.2 {}
+T {iovss} 45 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVdd.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVdd.sch
new file mode 100644
index 00000000..65ff0b42
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVdd.sch
@@ -0,0 +1,54 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1750 -150 1810 -150 {
+lab=#net1}
+N 1610 -250 1610 -200 {
+lab=iovdd}
+N 1970 -250 1970 -210 {
+lab=iovdd}
+N 1610 -100 1610 -50 {
+lab=iovss}
+N 1910 -50 1970 -50 {
+lab=iovss}
+N 1970 -90 1970 -50 {
+lab=iovss}
+N 2150 -150 2180 -150 {
+lab=iovdd}
+N 2150 -250 2150 -150 {
+lab=iovdd}
+N 2110 -150 2150 -150 {
+lab=iovdd}
+N 1970 -250 2150 -250 {
+lab=iovdd}
+N 1890 -250 1970 -250 {
+lab=iovdd}
+N 1890 -320 1890 -250 {
+lab=iovdd}
+N 1610 -250 1890 -250 {
+lab=iovdd}
+N 1910 -50 1910 30 {
+lab=iovss}
+N 1610 -50 1910 -50 {
+lab=iovss}
+N 1990 -320 1990 -290 {
+lab=vdd}
+N 2030 0 2030 30 {
+lab=vss}
+N 2180 -260 2180 -170 {
+lab=#net2}
+N 1450 -260 2180 -260 {
+lab=#net2}
+N 1450 -260 1450 -150 {
+lab=#net2}
+C {sg13g2_Clamp_N43N43D4R.sym} 1960 -150 0 0 {}
+C {sg13g2_RCClampResistor.sym} 2330 -160 0 1 {name=x1}
+C {sg13g2_RCClampInverter.sym} 1600 -150 0 0 {name=x2}
+C {devices/iopin.sym} 1910 30 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 1890 -320 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 2030 30 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 1990 -320 3 0 {name=vdd lab=vdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVdd.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVdd.sym
new file mode 100644
index 00000000..46435bb6
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVdd.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 20 -60 20 -40 {}
+L 7 -20 -60 -20 -40 {}
+L 7 -20 40 -20 60 {}
+L 7 20 40 20 60 {}
+B 5 17.5 -62.5 22.5 -57.5 {name=iovdd dir=inout}
+B 5 -22.5 -62.5 -17.5 -57.5 {name=vdd dir=inout}
+B 5 -22.5 57.5 -17.5 62.5 {name=vss dir=inout}
+B 5 17.5 57.5 22.5 62.5 {name=iovss dir=inout}
+T {sg13g2_IOPadIOVdd} -54.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} 35 -34 0 1 0.2 0.2 {}
+T {vdd} -15 -34 0 1 0.2 0.2 {}
+T {vss} -15 26 0 1 0.2 0.2 {}
+T {iovss} 35 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVss.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVss.sch
new file mode 100644
index 00000000..a698924d
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVss.sch
@@ -0,0 +1,45 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 2010 -220 2010 -150 {
+lab=iovss}
+N 1670 -130 1710 -130 {
+lab=iovss}
+N 1670 30 1690 30 {
+lab=iovss}
+N 1670 130 1670 170 {
+lab=iovss}
+N 1670 -130 1670 30 {
+lab=iovss}
+N 1990 10 2100 10 {
+lab=iovdd}
+N 2100 -110 2100 10 {
+lab=iovdd}
+N 2010 -110 2100 -110 {
+lab=iovdd}
+N 1990 50 1990 130 {
+lab=iovss}
+N 1670 130 1990 130 {
+lab=iovss}
+N 1670 30 1670 130 {
+lab=iovss}
+N 1670 -220 1670 -130 {
+lab=iovss}
+N 1670 -220 2010 -220 {
+lab=iovss}
+N 2100 -270 2100 -110 {
+lab=iovdd}
+N 1780 -320 1780 -270 {
+lab=vdd}
+N 1850 150 1850 200 {
+lab=vdd}
+C {sg13g2_DCNDiode.sym} 1860 -130 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 1840 30 0 0 {name=x9}
+C {devices/iopin.sym} 1670 170 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2100 -270 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 1780 -320 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1850 200 1 0 {name=vss lab=vss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVss.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVss.sym
new file mode 100644
index 00000000..a9a95fd5
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIOVss.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 -20 -60 -20 -40 {}
+L 7 20 -60 20 -40 {}
+L 7 20 40 20 60 {}
+L 7 -20 40 -20 60 {}
+B 5 -22.5 -62.5 -17.5 -57.5 {name=vdd dir=inout}
+B 5 17.5 -62.5 22.5 -57.5 {name=iovdd dir=inout}
+B 5 17.5 57.5 22.5 62.5 {name=iovss dir=inout}
+B 5 -22.5 57.5 -17.5 62.5 {name=vss dir=inout}
+T {sg13g2_IOPadIOVss} -64.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {vdd} -15 -34 0 1 0.2 0.2 {}
+T {iovdd} 35 -34 0 1 0.2 0.2 {}
+T {iovss} 35 26 0 1 0.2 0.2 {}
+T {vss} -15 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIn.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIn.sch
new file mode 100644
index 00000000..aa209cc6
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIn.sch
@@ -0,0 +1,70 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 910 -360 940 -360 {
+lab=pad}
+N 820 -320 860 -320 {
+lab=iovdd}
+N 860 -460 860 -320 {
+lab=iovdd}
+N 860 -460 1300 -460 {
+lab=iovdd}
+N 1300 -460 1300 -380 {
+lab=iovdd}
+N 1240 -380 1300 -380 {
+lab=iovdd}
+N 1240 -340 1360 -340 {
+lab=iovss}
+N 1360 -500 1360 -340 {
+lab=iovss}
+N 500 -500 1360 -500 {
+lab=iovss}
+N 500 -500 500 -340 {
+lab=iovss}
+N 500 -340 520 -340 {
+lab=iovss}
+N 860 -180 910 -180 {
+lab=pad}
+N 910 -250 910 -180 {
+lab=pad}
+N 820 -360 910 -360 {
+lab=pad}
+N 510 -180 560 -180 {
+lab=p2c}
+N 670 -100 670 -60 {
+lab=vss}
+N 750 -80 750 -60 {
+lab=iovss}
+N 670 -290 670 -260 {
+lab=vdd}
+N 750 -270 750 -260 {
+lab=iovdd}
+N 910 -250 990 -250 {
+lab=pad}
+N 910 -360 910 -250 {
+lab=pad}
+N 750 -80 1360 -80 {
+lab=iovss}
+N 750 -100 750 -80 {
+lab=iovss}
+N 1360 -340 1360 -80 {
+lab=iovss}
+N 750 -270 860 -270 {
+lab=iovdd}
+N 750 -290 750 -270 {
+lab=iovdd}
+N 860 -320 860 -270 {
+lab=iovdd}
+C {sg13g2_DCNDiode.sym} 670 -340 0 0 {name=x1}
+C {sg13g2_DCPDiode.sym} 1090 -360 0 0 {name=x2}
+C {sg13g2_LevelDown.sym} 710 -180 0 0 {name=x3}
+C {devices/iopin.sym} 750 -290 0 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 670 -290 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 670 -60 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} 750 -60 0 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 510 -180 2 0 {name=p2c lab=p2c}
+C {devices/iopin.sym} 990 -250 0 0 {name=pad lab=pad}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIn.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIn.sym
new file mode 100644
index 00000000..e16e1810
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadIn.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 30 -80 30 -60 {}
+L 7 -30 -80 -30 -60 {}
+L 7 130 0 150 0 {}
+L 7 -150 0 -130 0 {}
+L 7 30 60 30 80 {}
+L 7 -30 60 -30 80 {}
+B 5 27.5 -82.5 32.5 -77.5 {name=iovdd dir=inout}
+B 5 -32.5 -82.5 -27.5 -77.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=p2c dir=inout}
+B 5 27.5 77.5 32.5 82.5 {name=iovss dir=inout}
+B 5 -32.5 77.5 -27.5 82.5 {name=vss dir=inout}
+T {sg13g2_IOPadIn} -51 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {iovdd} 65 -74 0 1 0.2 0.2 {}
+T {vdd} -35 -74 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {p2c} -105 -4 0 1 0.2 0.2 {}
+T {iovss} 65 66 0 1 0.2 0.2 {}
+T {vss} -35 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut16mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut16mA.sch
new file mode 100644
index 00000000..e7481b01
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut16mA.sch
@@ -0,0 +1,135 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1630 -170 1700 -170 {
+lab=pad}
+N 1630 50 1700 50 {
+lab=pad}
+N 1770 -110 1900 -110 {
+lab=iovss}
+N 2200 -170 2200 -130 {
+lab=pad}
+N 1700 -190 2200 -190 {
+lab=pad}
+N 1700 -170 1700 50 {
+lab=pad}
+N 1700 -190 1700 -170 {
+lab=pad}
+N 2200 -90 2200 -40 {
+lab=iovdd}
+N 1700 50 1880 50 {
+lab=pad}
+N 2180 30 2200 30 {
+lab=iovdd}
+N 2200 -40 2200 30 {
+lab=iovdd}
+N 1860 130 2180 130 {
+lab=iovss}
+N 2180 70 2180 130 {
+lab=iovss}
+N 1250 -50 1250 50 {
+lab=#net1}
+N 1250 50 1330 50 {
+lab=#net1}
+N 1250 -170 1250 -90 {
+lab=#net2}
+N 1250 -170 1330 -170 {
+lab=#net2}
+N 1080 60 1080 90 {
+lab=vss}
+N 1080 -180 1080 -140 {
+lab=vdd}
+N 1300 -250 1300 -40 {
+lab=iovdd}
+N 1120 -250 1300 -250 {
+lab=iovdd}
+N 850 -50 950 -50 {
+lab=c2p}
+N 1360 -310 1360 -250 {
+lab=iovdd}
+N 1300 -250 1360 -250 {
+lab=iovdd}
+N 1770 -110 1770 130 {
+lab=iovss}
+N 1860 130 1860 190 {
+lab=iovss}
+N 1770 130 1860 130 {
+lab=iovss}
+N 2260 -170 2290 -170 {
+lab=pad}
+N 2200 -190 2200 -170 {
+lab=pad}
+N 1360 -250 1480 -250 {
+lab=iovdd}
+N 1480 -40 2200 -40 {
+lab=iovdd}
+N 1480 130 1770 130 {
+lab=iovss}
+N 860 -90 950 -90 {
+lab=c2p_en}
+N 1120 -250 1120 -140 {
+lab=iovdd}
+N 1480 -250 1480 -230 {
+lab=iovdd}
+N 1480 -110 1770 -110 {
+lab=iovss}
+N 1480 -40 1480 -10 {
+lab=iovdd}
+N 1300 -40 1480 -40 {
+lab=iovdd}
+N 1480 110 1480 130 {
+lab=iovss}
+N 2260 -170 2260 -30 {
+lab=pad}
+N 2200 -170 2260 -170 {
+lab=pad}
+N 2260 -30 2340 -30 {
+lab=pad}
+N 2450 50 2450 130 {
+lab=iovss}
+N 2180 130 2450 130 {
+lab=iovss}
+N 1480 -250 2450 -250 {
+lab=iovdd}
+N 2450 -250 2450 -110 {
+lab=iovdd}
+N 2530 50 2530 270 {
+lab=vss}
+N 1180 270 2530 270 {
+lab=vss}
+N 1180 60 1180 270 {
+lab=vss}
+N 1080 60 1180 60 {
+lab=vss}
+N 1080 0 1080 60 {
+lab=vss}
+N 2530 -340 2530 -110 {
+lab=vdd}
+N 1030 -340 2530 -340 {
+lab=vdd}
+N 1030 -340 1030 -180 {
+lab=vdd}
+N 1030 -180 1080 -180 {
+lab=vdd}
+N 1080 -230 1080 -180 {
+lab=vdd}
+N 2640 -30 2740 -30 {
+lab=c2p}
+C {sg13g2_DCNDiode.sym} 2050 -110 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 2030 50 0 0 {name=x9}
+C {devices/iopin.sym} 1860 190 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2290 -170 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 1080 90 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 850 -50 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1080 -230 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1360 -310 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_GateDecode.sym} 1100 -70 0 0 {name=x1}
+C {devices/iopin.sym} 860 -90 2 0 {name=c2p_en lab=c2p_en}
+C {sg13g2_Clamp_N8N8D.sym} 1480 -170 0 0 {name=x2}
+C {sg13g2_Clamp_P8N8D.sym} 1480 50 0 0 {name=x3}
+C {sg13g2_LevelDown.sym} 2490 -30 0 1 {name=x4}
+C {devices/iopin.sym} 2740 -30 0 0 {name=p2c lab=p2c}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut16mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut16mA.sym
new file mode 100644
index 00000000..2096224c
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut16mA.sym
@@ -0,0 +1,40 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -80 130 -80 {}
+L 4 -130 80 130 80 {}
+L 4 -130 -80 -130 80 {}
+L 4 130 -80 130 80 {}
+L 7 20 -100 20 -80 {}
+L 7 -20 -100 -20 -80 {}
+L 7 130 -30 150 -30 {}
+L 7 -150 -20 -130 -20 {}
+L 7 -150 20 -130 20 {}
+L 7 130 30 150 30 {}
+L 7 -20 80 -20 100 {}
+L 7 20 80 20 100 {}
+B 5 17.5 -102.5 22.5 -97.5 {name=iovdd dir=inout}
+B 5 -22.5 -102.5 -17.5 -97.5 {name=vdd dir=inout}
+B 5 147.5 -32.5 152.5 -27.5 {name=pad dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=c2p_en dir=inout}
+B 5 -152.5 17.5 -147.5 22.5 {name=c2p dir=inout}
+B 5 147.5 27.5 152.5 32.5 {name=p2c dir=inout}
+B 5 -22.5 97.5 -17.5 102.5 {name=vss dir=inout}
+B 5 17.5 97.5 22.5 102.5 {name=iovss dir=inout}
+T {sg13g2_IOPadInOut16mA} -62.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -92 0 0 0.2 0.2 {}
+T {iovdd} 35 -74 0 1 0.2 0.2 {}
+T {vdd} -15 -74 0 1 0.2 0.2 {}
+T {pad} 125 -34 0 1 0.2 0.2 {}
+T {c2p_en} -85 -24 0 1 0.2 0.2 {}
+T {c2p} -105 16 0 1 0.2 0.2 {}
+T {p2c} 125 26 0 1 0.2 0.2 {}
+T {vss} -15 66 0 1 0.2 0.2 {}
+T {iovss} 35 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut30mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut30mA.sch
new file mode 100644
index 00000000..774a0166
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut30mA.sch
@@ -0,0 +1,135 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1440 -190 1510 -190 {
+lab=pad}
+N 1440 30 1510 30 {
+lab=pad}
+N 1580 -130 1710 -130 {
+lab=iovss}
+N 2010 -190 2010 -150 {
+lab=pad}
+N 1510 -210 2010 -210 {
+lab=pad}
+N 1510 -190 1510 30 {
+lab=pad}
+N 1510 -210 1510 -190 {
+lab=pad}
+N 2010 -110 2010 -60 {
+lab=iovdd}
+N 1510 30 1690 30 {
+lab=pad}
+N 1990 10 2010 10 {
+lab=iovdd}
+N 2010 -60 2010 10 {
+lab=iovdd}
+N 1670 110 1990 110 {
+lab=iovss}
+N 1990 50 1990 110 {
+lab=iovss}
+N 1060 -70 1060 30 {
+lab=#net1}
+N 1060 30 1140 30 {
+lab=#net1}
+N 1060 -190 1060 -110 {
+lab=#net2}
+N 1060 -190 1140 -190 {
+lab=#net2}
+N 890 40 890 70 {
+lab=vss}
+N 890 -200 890 -160 {
+lab=vdd}
+N 1110 -270 1110 -60 {
+lab=iovdd}
+N 930 -270 1110 -270 {
+lab=iovdd}
+N 660 -70 760 -70 {
+lab=c2p}
+N 1170 -330 1170 -270 {
+lab=iovdd}
+N 1110 -270 1170 -270 {
+lab=iovdd}
+N 1580 -130 1580 110 {
+lab=iovss}
+N 1670 110 1670 170 {
+lab=iovss}
+N 1580 110 1670 110 {
+lab=iovss}
+N 2070 -190 2100 -190 {
+lab=pad}
+N 2010 -210 2010 -190 {
+lab=pad}
+N 1170 -270 1290 -270 {
+lab=iovdd}
+N 1290 -60 2010 -60 {
+lab=iovdd}
+N 1290 110 1580 110 {
+lab=iovss}
+N 670 -110 760 -110 {
+lab=c2p_en}
+N 930 -270 930 -160 {
+lab=iovdd}
+N 1290 -270 1290 -250 {
+lab=iovdd}
+N 1290 -130 1580 -130 {
+lab=iovss}
+N 1290 -60 1290 -30 {
+lab=iovdd}
+N 1110 -60 1290 -60 {
+lab=iovdd}
+N 1290 90 1290 110 {
+lab=iovss}
+N 2070 -190 2070 -50 {
+lab=pad}
+N 2010 -190 2070 -190 {
+lab=pad}
+N 2070 -50 2150 -50 {
+lab=pad}
+N 2260 30 2260 110 {
+lab=iovss}
+N 1990 110 2260 110 {
+lab=iovss}
+N 1290 -270 2260 -270 {
+lab=iovdd}
+N 2260 -270 2260 -130 {
+lab=iovdd}
+N 2340 30 2340 250 {
+lab=vss}
+N 990 250 2340 250 {
+lab=vss}
+N 990 40 990 250 {
+lab=vss}
+N 890 40 990 40 {
+lab=vss}
+N 890 -20 890 40 {
+lab=vss}
+N 2340 -360 2340 -130 {
+lab=vdd}
+N 840 -360 2340 -360 {
+lab=vdd}
+N 840 -360 840 -200 {
+lab=vdd}
+N 840 -200 890 -200 {
+lab=vdd}
+N 890 -250 890 -200 {
+lab=vdd}
+N 2450 -50 2550 -50 {
+lab=p2c}
+C {sg13g2_DCNDiode.sym} 1860 -130 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 1840 30 0 0 {name=x9}
+C {devices/iopin.sym} 1670 170 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2100 -190 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 890 70 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 660 -70 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 890 -250 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1170 -330 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_GateDecode.sym} 910 -90 0 0 {name=x1}
+C {devices/iopin.sym} 670 -110 2 0 {name=c2p_en lab=c2p_en}
+C {sg13g2_LevelDown.sym} 2300 -50 0 1 {name=x4}
+C {devices/iopin.sym} 2550 -50 0 0 {name=p2c lab=p2c}
+C {sg13g2_Clamp_N15N15D.sym} 1290 -190 0 0 {name=x5}
+C {sg13g2_Clamp_P15N15D.sym} 1290 30 0 0 {name=x6}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut30mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut30mA.sym
new file mode 100644
index 00000000..00fd8300
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut30mA.sym
@@ -0,0 +1,40 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -80 130 -80 {}
+L 4 -130 80 130 80 {}
+L 4 -130 -80 -130 80 {}
+L 4 130 -80 130 80 {}
+L 7 30 -100 30 -80 {}
+L 7 -30 -100 -30 -80 {}
+L 7 130 -30 150 -30 {}
+L 7 -150 -20 -130 -20 {}
+L 7 -150 20 -130 20 {}
+L 7 130 30 150 30 {}
+L 7 -30 80 -30 100 {}
+L 7 30 80 30 100 {}
+B 5 27.5 -102.5 32.5 -97.5 {name=iovdd dir=inout}
+B 5 -32.5 -102.5 -27.5 -97.5 {name=vdd dir=inout}
+B 5 147.5 -32.5 152.5 -27.5 {name=pad dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=c2p_en dir=inout}
+B 5 -152.5 17.5 -147.5 22.5 {name=c2p dir=inout}
+B 5 147.5 27.5 152.5 32.5 {name=p2c dir=inout}
+B 5 -32.5 97.5 -27.5 102.5 {name=vss dir=inout}
+B 5 27.5 97.5 32.5 102.5 {name=iovss dir=inout}
+T {sg13g2_IOPadInOut30mA} -52.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -92 0 0 0.2 0.2 {}
+T {iovdd} 45 -74 0 1 0.2 0.2 {}
+T {vdd} -25 -74 0 1 0.2 0.2 {}
+T {pad} 125 -34 0 1 0.2 0.2 {}
+T {c2p_en} -85 -24 0 1 0.2 0.2 {}
+T {c2p} -105 16 0 1 0.2 0.2 {}
+T {p2c} 125 26 0 1 0.2 0.2 {}
+T {vss} -15 66 0 1 0.2 0.2 {}
+T {iovss} 45 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut4mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut4mA.sch
new file mode 100644
index 00000000..e5767041
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut4mA.sch
@@ -0,0 +1,135 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1630 -170 1700 -170 {
+lab=pad}
+N 1630 50 1700 50 {
+lab=pad}
+N 1770 -110 1900 -110 {
+lab=iovss}
+N 2200 -170 2200 -130 {
+lab=pad}
+N 1700 -190 2200 -190 {
+lab=pad}
+N 1700 -170 1700 50 {
+lab=pad}
+N 1700 -190 1700 -170 {
+lab=pad}
+N 2200 -90 2200 -40 {
+lab=iovdd}
+N 1700 50 1880 50 {
+lab=pad}
+N 2180 30 2200 30 {
+lab=iovdd}
+N 2200 -40 2200 30 {
+lab=iovdd}
+N 1860 130 2180 130 {
+lab=iovss}
+N 2180 70 2180 130 {
+lab=iovss}
+N 1250 -50 1250 50 {
+lab=#net1}
+N 1250 50 1330 50 {
+lab=#net1}
+N 1250 -170 1250 -90 {
+lab=#net2}
+N 1250 -170 1330 -170 {
+lab=#net2}
+N 1080 -190 1080 -140 {
+lab=vdd}
+N 1450 -40 2200 -40 {
+lab=iovdd}
+N 1300 -250 1300 -40 {
+lab=iovdd}
+N 1120 -250 1300 -250 {
+lab=iovdd}
+N 850 -50 950 -50 {
+lab=c2p}
+N 1300 -250 1360 -250 {
+lab=iovdd}
+N 1770 -110 1770 130 {
+lab=iovss}
+N 1860 130 1860 340 {
+lab=iovss}
+N 1770 130 1860 130 {
+lab=iovss}
+N 2250 -170 2290 -170 {
+lab=pad}
+N 2200 -190 2200 -170 {
+lab=pad}
+N 1450 -110 1770 -110 {
+lab=iovss}
+N 1450 -250 1450 -230 {
+lab=iovdd}
+N 1360 -250 1450 -250 {
+lab=iovdd}
+N 1450 -40 1450 -10 {
+lab=iovdd}
+N 1300 -40 1450 -40 {
+lab=iovdd}
+N 1450 110 1450 130 {
+lab=iovss}
+N 1450 130 1770 130 {
+lab=iovss}
+N 860 -90 950 -90 {
+lab=c2p_en}
+N 1120 -250 1120 -140 {
+lab=iovdd}
+N 2250 -170 2250 -30 {
+lab=pad}
+N 2200 -170 2250 -170 {
+lab=pad}
+N 2250 -30 2340 -30 {
+lab=pad}
+N 2450 50 2450 130 {
+lab=iovss}
+N 2180 130 2450 130 {
+lab=iovss}
+N 2450 -250 2450 -110 {
+lab=iovdd}
+N 1450 -250 2450 -250 {
+lab=iovdd}
+N 2530 50 2530 280 {
+lab=vss}
+N 1170 280 2530 280 {
+lab=vss}
+N 1170 50 1170 280 {
+lab=vss}
+N 1080 50 1170 50 {
+lab=vss}
+N 1080 0 1080 50 {
+lab=vss}
+N 2530 -370 2530 -110 {
+lab=vdd}
+N 990 -370 2530 -370 {
+lab=vdd}
+N 990 -370 990 -190 {
+lab=vdd}
+N 990 -190 1080 -190 {
+lab=vdd}
+N 2640 -30 2750 -30 {
+lab=p2c}
+N 1360 -430 1360 -250 {
+lab=iovdd}
+N 1080 -430 1080 -190 {
+lab=vdd}
+N 1080 50 1080 340 {
+lab=vss}
+C {sg13g2_DCNDiode.sym} 2050 -110 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 2030 50 0 0 {name=x9}
+C {devices/iopin.sym} 1860 340 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2290 -170 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 1080 340 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 850 -50 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1080 -430 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1360 -430 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_Clamp_N2N2D.sym} 1480 -170 0 0 {name=x4}
+C {sg13g2_Clamp_P2N2D.sym} 1480 50 0 0 {name=x5}
+C {sg13g2_GateDecode.sym} 1100 -70 0 0 {name=x1}
+C {devices/iopin.sym} 860 -90 2 0 {name=c2p_en lab=c2p_en}
+C {sg13g2_LevelDown.sym} 2490 -30 0 1 {name=x3}
+C {devices/iopin.sym} 2750 -30 0 0 {name=p2c lab=p2c}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut4mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut4mA.sym
new file mode 100644
index 00000000..49d028da
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadInOut4mA.sym
@@ -0,0 +1,40 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -80 130 -80 {}
+L 4 -130 80 130 80 {}
+L 4 -130 -80 -130 80 {}
+L 4 130 -80 130 80 {}
+L 7 25 -100 25 -80 {}
+L 7 -25 -100 -25 -80 {}
+L 7 130 -30 150 -30 {}
+L 7 -150 -20 -130 -20 {}
+L 7 -150 20 -130 20 {}
+L 7 130 30 150 30 {}
+L 7 -25 80 -25 100 {}
+L 7 25 80 25 100 {}
+B 5 22.5 -102.5 27.5 -97.5 {name=iovdd dir=inout}
+B 5 -27.5 -102.5 -22.5 -97.5 {name=vdd dir=inout}
+B 5 147.5 -32.5 152.5 -27.5 {name=pad dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=c2p_en dir=inout}
+B 5 -152.5 17.5 -147.5 22.5 {name=c2p dir=inout}
+B 5 147.5 27.5 152.5 32.5 {name=p2c dir=inout}
+B 5 -27.5 97.5 -22.5 102.5 {name=vss dir=inout}
+B 5 22.5 97.5 27.5 102.5 {name=iovss dir=inout}
+T {sg13g2_IOPadInOut4mA} -48 -11 0 0 0.2 0.2 {}
+T {@name} 135 -92 0 0 0.2 0.2 {}
+T {iovdd} 40 -79 0 1 0.2 0.2 {}
+T {vdd} -15 -79 0 1 0.2 0.2 {}
+T {pad} 125 -34 0 1 0.2 0.2 {}
+T {c2p_en} -90 -24 0 1 0.2 0.2 {}
+T {c2p} -105 11 0 1 0.2 0.2 {}
+T {p2c} 125 26 0 1 0.2 0.2 {}
+T {vss} -15 66 0 1 0.2 0.2 {}
+T {iovss} 40 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut16mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut16mA.sch
new file mode 100644
index 00000000..764f4716
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut16mA.sch
@@ -0,0 +1,94 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 700 -720 770 -720 {
+lab=pad}
+N 700 -500 770 -500 {
+lab=pad}
+N 840 -660 970 -660 {
+lab=iovss}
+N 1270 -720 1270 -680 {
+lab=pad}
+N 770 -740 1270 -740 {
+lab=pad}
+N 770 -720 770 -500 {
+lab=pad}
+N 770 -740 770 -720 {
+lab=pad}
+N 550 -590 550 -560 {
+lab=iovdd}
+N 550 -590 1270 -590 {
+lab=iovdd}
+N 1270 -640 1270 -590 {
+lab=iovdd}
+N 770 -500 950 -500 {
+lab=pad}
+N 1250 -520 1270 -520 {
+lab=iovdd}
+N 1270 -590 1270 -520 {
+lab=iovdd}
+N 550 -440 550 -420 {
+lab=iovss}
+N 930 -420 1250 -420 {
+lab=iovss}
+N 1250 -480 1250 -420 {
+lab=iovss}
+N 320 -600 320 -500 {
+lab=#net1}
+N 320 -500 400 -500 {
+lab=#net1}
+N 320 -720 320 -640 {
+lab=#net2}
+N 320 -720 400 -720 {
+lab=#net2}
+N 170 -540 170 -450 {
+lab=vss}
+N 140 -790 140 -700 {
+lab=vdd}
+N 190 -800 190 -700 {
+lab=iovdd}
+N 430 -800 550 -800 {
+lab=iovdd}
+N 550 -800 550 -780 {
+lab=iovdd}
+N 370 -590 550 -590 {
+lab=iovdd}
+N 370 -800 370 -590 {
+lab=iovdd}
+N 190 -800 370 -800 {
+lab=iovdd}
+N -80 -620 20 -620 {
+lab=c2p}
+N 430 -860 430 -800 {
+lab=iovdd}
+N 370 -800 430 -800 {
+lab=iovdd}
+N 840 -660 840 -420 {
+lab=iovss}
+N 550 -660 840 -660 {
+lab=iovss}
+N 550 -420 840 -420 {
+lab=iovss}
+N 930 -420 930 -360 {
+lab=iovss}
+N 840 -420 930 -420 {
+lab=iovss}
+N 1270 -720 1360 -720 {
+lab=pad}
+N 1270 -740 1270 -720 {
+lab=pad}
+C {sg13g2_Clamp_N8N8D.sym} 550 -720 0 0 {name=x1}
+C {sg13g2_DCNDiode.sym} 1120 -660 0 0 {name=x3}
+C {sg13g2_DCPDiode.sym} 1100 -500 0 0 {name=x4}
+C {sg13g2_GateLevelUpInv.sym} 170 -620 0 0 {name=x5}
+C {devices/iopin.sym} 930 -360 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 1360 -720 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 170 -450 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} -80 -620 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 140 -790 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 430 -860 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_Clamp_P8N8D.sym} 550 -500 0 0 {name=x2}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut16mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut16mA.sym
new file mode 100644
index 00000000..241a8661
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut16mA.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 30 -80 30 -60 {}
+L 7 -30 -80 -30 -60 {}
+L 7 130 0 150 0 {}
+L 7 -150 0 -130 0 {}
+L 7 -30 60 -30 80 {}
+L 7 30 60 30 80 {}
+B 5 27.5 -82.5 32.5 -77.5 {name=iovdd dir=inout}
+B 5 -32.5 -82.5 -27.5 -77.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=c2p dir=inout}
+B 5 -32.5 77.5 -27.5 82.5 {name=vss dir=inout}
+B 5 27.5 77.5 32.5 82.5 {name=iovss dir=inout}
+T {sg13g2_IOPadOut16mA} -53.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {iovdd} 45 -54 0 1 0.2 0.2 {}
+T {vdd} -15 -54 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {c2p} -105 -4 0 1 0.2 0.2 {}
+T {vss} -25 46 0 1 0.2 0.2 {}
+T {iovss} 45 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut30mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut30mA.sch
new file mode 100644
index 00000000..d6fcc5e2
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut30mA.sch
@@ -0,0 +1,94 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1630 -170 1700 -170 {
+lab=pad}
+N 1630 50 1700 50 {
+lab=pad}
+N 1770 -110 1900 -110 {
+lab=iovss}
+N 2200 -170 2200 -130 {
+lab=pad}
+N 1700 -190 2200 -190 {
+lab=pad}
+N 1700 -170 1700 50 {
+lab=pad}
+N 1700 -190 1700 -170 {
+lab=pad}
+N 1480 -40 1480 -10 {
+lab=iovdd}
+N 1480 -40 2200 -40 {
+lab=iovdd}
+N 2200 -90 2200 -40 {
+lab=iovdd}
+N 1700 50 1880 50 {
+lab=pad}
+N 2180 30 2200 30 {
+lab=iovdd}
+N 2200 -40 2200 30 {
+lab=iovdd}
+N 1480 110 1480 130 {
+lab=iovss}
+N 1860 130 2180 130 {
+lab=iovss}
+N 2180 70 2180 130 {
+lab=iovss}
+N 1250 -50 1250 50 {
+lab=#net1}
+N 1250 50 1330 50 {
+lab=#net1}
+N 1250 -170 1250 -90 {
+lab=#net2}
+N 1250 -170 1330 -170 {
+lab=#net2}
+N 1100 10 1100 100 {
+lab=vss}
+N 1070 -240 1070 -150 {
+lab=vdd}
+N 1120 -250 1120 -150 {
+lab=iovdd}
+N 1360 -250 1480 -250 {
+lab=iovdd}
+N 1480 -250 1480 -230 {
+lab=iovdd}
+N 1300 -40 1480 -40 {
+lab=iovdd}
+N 1300 -250 1300 -40 {
+lab=iovdd}
+N 1120 -250 1300 -250 {
+lab=iovdd}
+N 850 -70 950 -70 {
+lab=c2p}
+N 1360 -310 1360 -250 {
+lab=iovdd}
+N 1300 -250 1360 -250 {
+lab=iovdd}
+N 1770 -110 1770 130 {
+lab=iovss}
+N 1480 -110 1770 -110 {
+lab=iovss}
+N 1480 130 1770 130 {
+lab=iovss}
+N 1860 130 1860 190 {
+lab=iovss}
+N 1770 130 1860 130 {
+lab=iovss}
+N 2200 -170 2290 -170 {
+lab=pad}
+N 2200 -190 2200 -170 {
+lab=pad}
+C {sg13g2_Clamp_N15N15D.sym} 1480 -170 0 0 {name=x1}
+C {sg13g2_Clamp_P15N15D.sym} 1480 50 0 0 {name=x2}
+C {sg13g2_DCNDiode.sym} 2050 -110 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 2030 50 0 0 {name=x9}
+C {sg13g2_GateLevelUpInv.sym} 1100 -70 0 0 {name=x10}
+C {devices/iopin.sym} 1860 190 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2290 -170 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 1100 100 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 850 -70 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1070 -240 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1360 -310 3 0 {name=iovdd lab=iovdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut30mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut30mA.sym
new file mode 100644
index 00000000..e3b9a95d
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut30mA.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 -20 -80 -20 -60 {}
+L 7 20 -80 20 -60 {}
+L 7 130 0 150 0 {}
+L 7 -150 0 -130 0 {}
+L 7 20 60 20 80 {}
+L 7 -20 60 -20 80 {}
+B 5 -22.5 -82.5 -17.5 -77.5 {name=iovdd dir=inout}
+B 5 17.5 -82.5 22.5 -77.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=c2p dir=inout}
+B 5 17.5 77.5 22.5 82.5 {name=vss dir=inout}
+B 5 -22.5 77.5 -17.5 82.5 {name=iovss dir=inout}
+T {sg13g2_IOPadOut30mA} -53.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {iovdd} -5 -54 0 1 0.2 0.2 {}
+T {vdd} 35 -54 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {c2p} -105 -4 0 1 0.2 0.2 {}
+T {vss} 25 46 0 1 0.2 0.2 {}
+T {iovss} -5 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut4mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut4mA.sch
new file mode 100644
index 00000000..d14004f4
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut4mA.sch
@@ -0,0 +1,108 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 820 -500 870 -500 {
+lab=#net1}
+N 870 -570 870 -500 {
+lab=#net1}
+N 870 -570 1000 -570 {
+lab=#net1}
+N 820 -460 870 -460 {
+lab=#net2}
+N 870 -460 870 -410 {
+lab=#net2}
+N 870 -410 1000 -410 {
+lab=#net2}
+N 690 -730 690 -560 {
+lab=iovdd}
+N 950 -730 1120 -730 {
+lab=iovdd}
+N 1120 -730 1120 -630 {
+lab=iovdd}
+N 950 -470 1120 -470 {
+lab=iovdd}
+N 950 -730 950 -470 {
+lab=iovdd}
+N 690 -730 950 -730 {
+lab=iovdd}
+N 910 -510 1120 -510 {
+lab=iovss}
+N 910 -510 910 -280 {
+lab=iovss}
+N 910 -280 1120 -280 {
+lab=iovss}
+N 1120 -350 1120 -280 {
+lab=iovss}
+N 1410 -410 1410 -280 {
+lab=iovss}
+N 1290 -280 1410 -280 {
+lab=iovss}
+N 1300 -570 1350 -570 {
+lab=pad}
+N 1350 -510 1350 -410 {
+lab=pad}
+N 1300 -410 1350 -410 {
+lab=pad}
+N 1710 -490 1710 -430 {
+lab=pad}
+N 1460 -510 1710 -510 {
+lab=pad}
+N 1350 -570 1350 -510 {
+lab=pad}
+N 1710 -390 1790 -390 {
+lab=iovdd}
+N 1790 -530 1790 -390 {
+lab=iovdd}
+N 1390 -530 1790 -530 {
+lab=iovdd}
+N 1390 -730 1390 -530 {
+lab=iovdd}
+N 1260 -730 1390 -730 {
+lab=iovdd}
+N 1460 -650 1460 -510 {
+lab=pad}
+N 1350 -510 1460 -510 {
+lab=pad}
+N 1760 -730 1760 -670 {
+lab=iovdd}
+N 1390 -730 1760 -730 {
+lab=iovdd}
+N 1760 -630 1820 -630 {
+lab=iovss}
+N 1820 -630 1820 -280 {
+lab=iovss}
+N 1410 -280 1820 -280 {
+lab=iovss}
+N 670 -400 670 -290 {
+lab=vss}
+N 640 -640 640 -560 {
+lab=vdd}
+N 450 -480 520 -480 {
+lab=c2p}
+N 1290 -280 1290 -250 {
+lab=iovss}
+N 1120 -280 1290 -280 {
+lab=iovss}
+N 1260 -780 1260 -730 {
+lab=iovdd}
+N 1120 -730 1260 -730 {
+lab=iovdd}
+N 1710 -490 1730 -490 {
+lab=pad}
+N 1710 -510 1710 -490 {
+lab=pad}
+C {sg13g2_Clamp_N2N2D.sym} 1150 -570 0 0 {name=x1}
+C {sg13g2_Clamp_P2N2D.sym} 1150 -410 0 0 {name=x2}
+C {sg13g2_GateLevelUpInv.sym} 670 -480 0 0 {name=x5}
+C {devices/iopin.sym} 640 -640 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 670 -290 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 1290 -250 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 1260 -780 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 450 -480 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1730 -490 0 0 {name=pad lab=pad}
+C {sg13g2_DCPDiode.sym} 1610 -650 0 0 {name=x3}
+C {sg13g2_DCNDiode.sym} 1560 -410 0 0 {name=x4}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut4mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut4mA.sym
new file mode 100644
index 00000000..b82b05f4
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadOut4mA.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 30 -80 30 -60 {}
+L 7 -30 -80 -30 -60 {}
+L 7 130 0 150 0 {}
+L 7 -150 0 -130 0 {}
+L 7 -30 60 -30 80 {}
+L 7 30 60 30 80 {}
+B 5 27.5 -82.5 32.5 -77.5 {name=iovdd dir=inout}
+B 5 -32.5 -82.5 -27.5 -77.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=c2p dir=inout}
+B 5 -32.5 77.5 -27.5 82.5 {name=vss dir=inout}
+B 5 27.5 77.5 32.5 82.5 {name=iovss dir=inout}
+T {sg13g2_IOPadOut4mA} -59 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {iovdd} 65 -74 0 1 0.2 0.2 {}
+T {vdd} -35 -74 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {c2p} -135 -24 0 1 0.2 0.2 {}
+T {vss} -45 66 0 1 0.2 0.2 {}
+T {iovss} 65 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut16mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut16mA.sch
new file mode 100644
index 00000000..b7e4c781
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut16mA.sch
@@ -0,0 +1,93 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1810 -120 1880 -120 {
+lab=pad}
+N 1810 100 1880 100 {
+lab=pad}
+N 1950 -60 2080 -60 {
+lab=iovss}
+N 2380 -120 2380 -80 {
+lab=pad}
+N 1880 -140 2380 -140 {
+lab=pad}
+N 1880 -120 1880 100 {
+lab=pad}
+N 1880 -140 1880 -120 {
+lab=pad}
+N 2380 -40 2380 10 {
+lab=iovdd}
+N 1880 100 2060 100 {
+lab=pad}
+N 2360 80 2380 80 {
+lab=iovdd}
+N 2380 10 2380 80 {
+lab=iovdd}
+N 2040 180 2360 180 {
+lab=iovss}
+N 2360 120 2360 180 {
+lab=iovss}
+N 1430 0 1430 100 {
+lab=#net1}
+N 1430 100 1510 100 {
+lab=#net1}
+N 1430 -120 1430 -40 {
+lab=#net2}
+N 1430 -120 1510 -120 {
+lab=#net2}
+N 1260 50 1260 140 {
+lab=vss}
+N 1260 -180 1260 -90 {
+lab=vdd}
+N 1480 -200 1480 10 {
+lab=iovdd}
+N 1300 -200 1480 -200 {
+lab=iovdd}
+N 1030 0 1130 0 {
+lab=c2p}
+N 1540 -260 1540 -200 {
+lab=iovdd}
+N 1480 -200 1540 -200 {
+lab=iovdd}
+N 1950 -60 1950 180 {
+lab=iovss}
+N 2040 180 2040 240 {
+lab=iovss}
+N 1950 180 2040 180 {
+lab=iovss}
+N 2380 -120 2470 -120 {
+lab=pad}
+N 2380 -140 2380 -120 {
+lab=pad}
+N 1540 -200 1660 -200 {
+lab=iovdd}
+N 1660 10 2380 10 {
+lab=iovdd}
+N 1660 180 1950 180 {
+lab=iovss}
+N 1040 -40 1130 -40 {
+lab=c2p_en}
+N 1300 -200 1300 -90 {
+lab=iovdd}
+N 1660 160 1660 180 {}
+N 1660 10 1660 40 {}
+N 1480 10 1660 10 {
+lab=iovdd}
+N 1660 -60 1950 -60 {}
+N 1660 -200 1660 -180 {}
+C {sg13g2_DCNDiode.sym} 2230 -60 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 2210 100 0 0 {name=x9}
+C {devices/iopin.sym} 2040 240 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2470 -120 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 1260 140 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 1030 0 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1260 -180 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1540 -260 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_GateDecode.sym} 1280 -20 0 0 {name=x1}
+C {devices/iopin.sym} 1040 -40 2 0 {name=c2p_en lab=c2p_en}
+C {sg13g2_Clamp_N8N8D.sym} 1660 -120 0 0 {name=x2}
+C {sg13g2_Clamp_P8N8D.sym} 1660 100 0 0 {name=x3}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut16mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut16mA.sym
new file mode 100644
index 00000000..07b782f3
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut16mA.sym
@@ -0,0 +1,37 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -70 130 -70 {}
+L 4 -130 70 130 70 {}
+L 4 -130 -70 -130 70 {}
+L 4 130 -70 130 70 {}
+L 7 30 -90 30 -70 {}
+L 7 -30 -90 -30 -70 {}
+L 7 130 0 150 0 {}
+L 7 -150 -20 -130 -20 {}
+L 7 -150 20 -130 20 {}
+L 7 -30 70 -30 90 {}
+L 7 30 70 30 90 {}
+B 5 27.5 -92.5 32.5 -87.5 {name=iovdd dir=inout}
+B 5 -32.5 -92.5 -27.5 -87.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=c2p_en dir=inout}
+B 5 -152.5 17.5 -147.5 22.5 {name=c2p dir=inout}
+B 5 -32.5 87.5 -27.5 92.5 {name=vss dir=inout}
+B 5 27.5 87.5 32.5 92.5 {name=iovss dir=inout}
+T {sg13g2_IOPadTriOut16mA} -67 -6 0 0 0.2 0.2 {}
+T {@name} 135 -82 0 0 0.2 0.2 {}
+T {iovdd} 45 -64 0 1 0.2 0.2 {}
+T {vdd} -25 -64 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {c2p_en} -85 -24 0 1 0.2 0.2 {}
+T {c2p} -105 16 0 1 0.2 0.2 {}
+T {vss} -25 56 0 1 0.2 0.2 {}
+T {iovss} 45 56 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut30mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut30mA.sch
new file mode 100644
index 00000000..1b40e005
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut30mA.sch
@@ -0,0 +1,97 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1620 -190 1690 -190 {
+lab=pad}
+N 1620 30 1690 30 {
+lab=pad}
+N 1760 -130 1890 -130 {
+lab=iovss}
+N 2190 -190 2190 -150 {
+lab=pad}
+N 1690 -210 2190 -210 {
+lab=pad}
+N 1690 -190 1690 30 {
+lab=pad}
+N 1690 -210 1690 -190 {
+lab=pad}
+N 2190 -110 2190 -60 {
+lab=iovdd}
+N 1690 30 1870 30 {
+lab=pad}
+N 2170 10 2190 10 {
+lab=iovdd}
+N 2190 -60 2190 10 {
+lab=iovdd}
+N 1850 110 2170 110 {
+lab=iovss}
+N 2170 50 2170 110 {
+lab=iovss}
+N 1240 -70 1240 30 {
+lab=#net1}
+N 1240 30 1320 30 {
+lab=#net1}
+N 1240 -190 1240 -110 {
+lab=#net2}
+N 1240 -190 1320 -190 {
+lab=#net2}
+N 1070 -20 1070 70 {
+lab=vss}
+N 1070 -250 1070 -160 {
+lab=vdd}
+N 1290 -270 1290 -60 {
+lab=iovdd}
+N 1110 -270 1290 -270 {
+lab=iovdd}
+N 840 -70 940 -70 {
+lab=c2p}
+N 1350 -330 1350 -270 {
+lab=iovdd}
+N 1290 -270 1350 -270 {
+lab=iovdd}
+N 1760 -130 1760 110 {
+lab=iovss}
+N 1850 110 1850 170 {
+lab=iovss}
+N 1760 110 1850 110 {
+lab=iovss}
+N 2190 -190 2280 -190 {
+lab=pad}
+N 2190 -210 2190 -190 {
+lab=pad}
+N 1350 -270 1470 -270 {
+lab=iovdd}
+N 1470 -60 2190 -60 {
+lab=iovdd}
+N 1470 110 1760 110 {
+lab=iovss}
+N 850 -110 940 -110 {
+lab=c2p_en}
+N 1110 -270 1110 -160 {
+lab=iovdd}
+N 1470 90 1470 110 {
+lab=iovss}
+N 1470 -60 1470 -30 {
+lab=iovdd}
+N 1290 -60 1470 -60 {
+lab=iovdd}
+N 1470 -130 1760 -130 {
+lab=iovss}
+N 1470 -270 1470 -250 {
+lab=iovdd}
+C {sg13g2_DCNDiode.sym} 2040 -130 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 2020 30 0 0 {name=x9}
+C {devices/iopin.sym} 1850 170 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2280 -190 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 1070 70 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 840 -70 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1070 -250 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1350 -330 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_GateDecode.sym} 1090 -90 0 0 {name=x1}
+C {devices/iopin.sym} 850 -110 2 0 {name=c2p_en lab=c2p_en}
+C {sg13g2_Clamp_N15N15D.sym} 1470 -190 0 0 {name=x2}
+C {sg13g2_Clamp_P15N15D.sym} 1470 30 0 0 {name=x3}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut30mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut30mA.sym
new file mode 100644
index 00000000..1efa2d8e
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut30mA.sym
@@ -0,0 +1,37 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -70 130 -70 {}
+L 4 -130 70 130 70 {}
+L 4 -130 -70 -130 70 {}
+L 4 130 -70 130 70 {}
+L 7 30 -90 30 -70 {}
+L 7 -30 -90 -30 -70 {}
+L 7 130 0 150 0 {}
+L 7 -150 -20 -130 -20 {}
+L 7 -150 20 -130 20 {}
+L 7 -30 70 -30 90 {}
+L 7 30 70 30 90 {}
+B 5 27.5 -92.5 32.5 -87.5 {name=iovdd dir=inout}
+B 5 -32.5 -92.5 -27.5 -87.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=c2p_en dir=inout}
+B 5 -152.5 17.5 -147.5 22.5 {name=c2p dir=inout}
+B 5 -32.5 87.5 -27.5 92.5 {name=vss dir=inout}
+B 5 27.5 87.5 32.5 92.5 {name=iovss dir=inout}
+T {sg13g2_IOPadTriOut30mA} -57 -6 0 0 0.2 0.2 {}
+T {@name} 135 -82 0 0 0.2 0.2 {}
+T {iovdd} 45 -64 0 1 0.2 0.2 {}
+T {vdd} -25 -64 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {c2p_en} -85 -24 0 1 0.2 0.2 {}
+T {c2p} -105 16 0 1 0.2 0.2 {}
+T {vss} -25 56 0 1 0.2 0.2 {}
+T {iovss} 45 56 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut4mA.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut4mA.sch
new file mode 100644
index 00000000..e633b800
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut4mA.sch
@@ -0,0 +1,97 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 1630 -170 1700 -170 {
+lab=pad}
+N 1630 50 1700 50 {
+lab=pad}
+N 1770 -110 1900 -110 {
+lab=iovss}
+N 2200 -170 2200 -130 {
+lab=pad}
+N 1700 -190 2200 -190 {
+lab=pad}
+N 1700 -170 1700 50 {
+lab=pad}
+N 1700 -190 1700 -170 {
+lab=pad}
+N 2200 -90 2200 -40 {
+lab=iovdd}
+N 1700 50 1880 50 {
+lab=pad}
+N 2180 30 2200 30 {
+lab=iovdd}
+N 2200 -40 2200 30 {
+lab=iovdd}
+N 1860 130 2180 130 {
+lab=iovss}
+N 2180 70 2180 130 {
+lab=iovss}
+N 1250 -50 1250 50 {
+lab=#net1}
+N 1250 50 1330 50 {
+lab=#net1}
+N 1250 -170 1250 -90 {
+lab=#net2}
+N 1250 -170 1330 -170 {
+lab=#net2}
+N 1080 0 1080 90 {
+lab=vss}
+N 1080 -230 1080 -140 {
+lab=vdd}
+N 1450 -40 2200 -40 {
+lab=iovdd}
+N 1300 -250 1300 -40 {
+lab=iovdd}
+N 1120 -250 1300 -250 {
+lab=iovdd}
+N 850 -50 950 -50 {
+lab=c2p}
+N 1360 -310 1360 -250 {
+lab=iovdd}
+N 1300 -250 1360 -250 {
+lab=iovdd}
+N 1770 -110 1770 130 {
+lab=iovss}
+N 1860 130 1860 190 {
+lab=iovss}
+N 1770 130 1860 130 {
+lab=iovss}
+N 2200 -170 2290 -170 {
+lab=pad}
+N 2200 -190 2200 -170 {
+lab=pad}
+N 1450 -110 1770 -110 {
+lab=iovss}
+N 1450 -250 1450 -230 {
+lab=iovdd}
+N 1360 -250 1450 -250 {
+lab=iovdd}
+N 1450 -40 1450 -10 {
+lab=iovdd}
+N 1300 -40 1450 -40 {
+lab=iovdd}
+N 1450 110 1450 130 {
+lab=iovss}
+N 1450 130 1770 130 {
+lab=iovss}
+N 860 -90 950 -90 {
+lab=c2p_en}
+N 1120 -250 1120 -140 {
+lab=iovdd}
+C {sg13g2_DCNDiode.sym} 2050 -110 0 0 {name=x8}
+C {sg13g2_DCPDiode.sym} 2030 50 0 0 {name=x9}
+C {devices/iopin.sym} 1860 190 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 2290 -170 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 1080 90 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 850 -50 2 0 {name=c2p lab=c2p}
+C {devices/iopin.sym} 1080 -230 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1360 -310 3 0 {name=iovdd lab=iovdd}
+C {sg13g2_Clamp_N2N2D.sym} 1480 -170 0 0 {name=x4}
+C {sg13g2_Clamp_P2N2D.sym} 1480 50 0 0 {name=x5}
+C {sg13g2_GateDecode.sym} 1100 -70 0 0 {name=x1}
+C {devices/iopin.sym} 860 -90 2 0 {name=c2p_en lab=c2p_en}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut4mA.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut4mA.sym
new file mode 100644
index 00000000..9f7c6b82
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadTriOut4mA.sym
@@ -0,0 +1,37 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -70 130 -70 {}
+L 4 -130 70 130 70 {}
+L 4 -130 -70 -130 70 {}
+L 4 130 -70 130 70 {}
+L 7 30 -90 30 -70 {}
+L 7 -30 -90 -30 -70 {}
+L 7 130 0 150 0 {}
+L 7 -150 -20 -130 -20 {}
+L 7 -150 20 -130 20 {}
+L 7 -30 70 -30 90 {}
+L 7 30 70 30 90 {}
+B 5 27.5 -92.5 32.5 -87.5 {name=iovdd dir=inout}
+B 5 -32.5 -92.5 -27.5 -87.5 {name=vdd dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=c2p_en dir=inout}
+B 5 -152.5 17.5 -147.5 22.5 {name=c2p dir=inout}
+B 5 -32.5 87.5 -27.5 92.5 {name=vss dir=inout}
+B 5 27.5 87.5 32.5 92.5 {name=iovss dir=inout}
+T {sg13g2_IOPadTriOut4mA} -52.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -82 0 0 0.2 0.2 {}
+T {iovdd} 45 -64 0 1 0.2 0.2 {}
+T {vdd} -15 -64 0 1 0.2 0.2 {}
+T {pad} 125 -4 0 1 0.2 0.2 {}
+T {c2p_en} -85 -24 0 1 0.2 0.2 {}
+T {c2p} -105 16 0 1 0.2 0.2 {}
+T {vss} -25 56 0 1 0.2 0.2 {}
+T {iovss} 45 56 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVSS.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVSS.sch
new file mode 100644
index 00000000..240e6a03
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVSS.sch
@@ -0,0 +1,43 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 10 30 50 30 {
+lab=vss}
+N 50 -10 360 -10 {
+lab=iovdd}
+N 360 -10 360 10 {
+lab=iovdd}
+N 350 10 360 10 {
+lab=iovdd}
+N 350 50 430 50 {
+lab=iovss}
+N -350 10 -320 10 {
+lab=iovss}
+N 50 -60 50 -10 {
+lab=iovdd}
+N -20 -10 50 -10 {
+lab=iovdd}
+N 10 30 10 90 {
+lab=vss}
+N -20 30 10 30 {
+lab=vss}
+N 430 50 430 160 {
+lab=iovss}
+N -350 160 430 160 {
+lab=iovss}
+N -350 10 -350 160 {
+lab=iovss}
+N -400 10 -350 10 {
+lab=iovss}
+N 150 -120 240 -120 {
+lab=vdd}
+C {sg13g2_DCNDiode.sym} -170 10 2 1 {name=x1}
+C {sg13g2_DCPDiode.sym} 200 30 0 0 {name=x2}
+C {devices/iopin.sym} -400 10 2 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 50 -60 0 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 10 90 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} 240 -120 0 0 {name=vdd lab=vdd}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVSS.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVSS.sym
new file mode 100644
index 00000000..0f604f5a
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVSS.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 -20 -60 -20 -40 {}
+L 7 20 -60 20 -40 {}
+L 7 20 40 20 60 {}
+L 7 -20 40 -20 60 {}
+B 5 -22.5 -62.5 -17.5 -57.5 {name=vdd dir=inout}
+B 5 17.5 -62.5 22.5 -57.5 {name=iovdd dir=inout}
+B 5 17.5 57.5 22.5 62.5 {name=iovss dir=inout}
+B 5 -22.5 57.5 -17.5 62.5 {name=vss dir=inout}
+T {sg13g2_IOPadVSS} -45.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {vdd} -15 -34 0 1 0.2 0.2 {}
+T {iovdd} 35 -34 0 1 0.2 0.2 {}
+T {iovss} 35 26 0 1 0.2 0.2 {}
+T {vss} -15 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVdd.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVdd.sch
new file mode 100644
index 00000000..b2cd806f
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVdd.sch
@@ -0,0 +1,40 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 70 -160 70 -60 {
+lab=vdd}
+N 680 -190 680 -100 {
+lab=iovdd}
+N 680 20 680 80 {
+lab=iovss}
+N 430 -40 520 -40 {
+lab=#net1}
+N 70 -40 130 -40 {
+lab=#net2}
+N 820 -250 820 -40 {
+lab=vdd}
+N 520 -250 820 -250 {
+lab=vdd}
+N 290 10 290 60 {
+lab=vss}
+N 520 -290 520 -250 {
+lab=vdd}
+N 290 -160 290 -90 {
+lab=vdd}
+N 70 -160 290 -160 {
+lab=vdd}
+N 290 -250 290 -160 {
+lab=vdd}
+N 290 -250 520 -250 {
+lab=vdd}
+C {sg13g2_RCClampResistor.sym} -80 -50 0 0 {name=x6}
+C {devices/iopin.sym} 520 -290 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 680 -190 0 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 290 60 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} 680 80 0 0 {name=iovss lab=iovss}
+C {sg13g2_RCClampInverter.sym} 280 -40 0 0 {name=x1}
+C {sg13g2_Clamp_N43N43D4R.sym} 670 -40 0 0 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVdd.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVdd.sym
new file mode 100644
index 00000000..0f9cf86a
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_IOPadVdd.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 -30 -60 -30 -40 {}
+L 7 30 -60 30 -40 {}
+L 7 -30 40 -30 60 {}
+L 7 30 40 30 60 {}
+B 5 -32.5 -62.5 -27.5 -57.5 {name=vdd dir=inout}
+B 5 27.5 -62.5 32.5 -57.5 {name=iovdd dir=inout}
+B 5 -32.5 57.5 -27.5 62.5 {name=vss dir=inout}
+B 5 27.5 57.5 32.5 62.5 {name=iovss dir=inout}
+T {sg13g2_IOPadVdd} -55.5 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {vdd} -25 -34 0 1 0.2 0.2 {}
+T {iovdd} 45 -34 0 1 0.2 0.2 {}
+T {vss} -25 26 0 1 0.2 0.2 {}
+T {iovss} 45 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelDown.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelDown.sch
new file mode 100644
index 00000000..daed430c
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelDown.sch
@@ -0,0 +1,128 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 110 -60 130 -60 {
+lab=#net1}
+N 110 10 110 50 {
+lab=#net1}
+N -0 10 110 10 {
+lab=#net1}
+N -0 -30 -0 10 {
+lab=#net1}
+N 110 -60 110 10 {
+lab=#net1}
+N -60 -60 -40 -60 {
+lab=#net2}
+N 80 110 170 110 {
+lab=vss}
+N -0 -110 -0 -90 {
+lab=vdd}
+N 80 -110 170 -110 {
+lab=vdd}
+N 170 -110 170 -90 {
+lab=vdd}
+N 80 -140 80 -110 {
+lab=vdd}
+N 30 -110 80 -110 {
+lab=vdd}
+N 80 110 80 140 {
+lab=vss}
+N 30 110 80 110 {
+lab=vss}
+N -60 -20 -60 60 {
+lab=#net2}
+N -490 -20 -430 -20 {
+lab=pad}
+N -280 40 -280 80 {
+lab=iovss}
+N -280 -130 -280 -80 {
+lab=iovdd}
+N -490 -20 -490 40 {
+lab=pad}
+N 170 -0 270 0 {
+lab=core}
+N 170 -30 170 -0 {
+lab=core}
+N 170 80 170 110 {
+lab=vss}
+N 170 -0 170 20 {
+lab=core}
+N 110 50 130 50 {
+lab=#net1}
+N 0 90 0 110 {
+lab=vss}
+N 0 10 -0 30 {
+lab=#net1}
+N -60 60 -40 60 {
+lab=#net2}
+N -0 60 30 60 {
+lab=vss}
+N 30 60 30 110 {
+lab=vss}
+N 0 110 30 110 {
+lab=vss}
+N 170 50 200 50 {
+lab=vss}
+N 200 50 200 110 {
+lab=vss}
+N 170 110 200 110 {
+lab=vss}
+N -0 -60 30 -60 {
+lab=vdd}
+N 30 -110 30 -60 {
+lab=vdd}
+N -0 -110 30 -110 {
+lab=vdd}
+N 170 -60 200 -60 {
+lab=vdd}
+N 200 -110 200 -60 {
+lab=vdd}
+N 170 -110 200 -110 {
+lab=vdd}
+N -130 -20 -60 -20 {
+lab=#net2}
+N -60 -60 -60 -20 {
+lab=#net2}
+C {sg13g2_pr/sg13_hv_nmos.sym} -20 60 2 1 {name=M1
+l=0.45u
+w=2.65u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -20 -60 0 0 {name=M2
+l=0.45u
+w=4.65u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_nmos.sym} 150 50 2 1 {name=M3
+l=0.13u
+w=2.75u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_pmos.sym} 150 -60 0 0 {name=M4
+l=0.13u
+w=4.75u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_SecondaryProtection.sym} -280 -20 0 0 {}
+C {devices/iopin.sym} 80 -140 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 80 140 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} -280 -130 0 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} -280 80 0 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} -490 40 0 0 {name=pad lab=pad}
+C {devices/iopin.sym} 270 0 0 0 {name=core lab=core}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelDown.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelDown.sym
new file mode 100644
index 00000000..4c54a946
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelDown.sym
@@ -0,0 +1,34 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -60 130 -60 {}
+L 4 -130 60 130 60 {}
+L 4 -130 -60 -130 60 {}
+L 4 130 -60 130 60 {}
+L 7 -40 -80 -40 -60 {}
+L 7 40 -80 40 -60 {}
+L 7 -150 0 -130 0 {}
+L 7 130 0 150 0 {}
+L 7 40 60 40 80 {}
+L 7 -40 60 -40 80 {}
+B 5 -42.5 -82.5 -37.5 -77.5 {name=vdd dir=inout}
+B 5 37.5 -82.5 42.5 -77.5 {name=iovdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=core dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=pad dir=inout}
+B 5 37.5 77.5 42.5 82.5 {name=iovss dir=inout}
+B 5 -42.5 77.5 -37.5 82.5 {name=vss dir=inout}
+T {sg13g2_LevelDown} -50 -6 0 0 0.2 0.2 {}
+T {@name} 135 -72 0 0 0.2 0.2 {}
+T {vdd} -15 -74 0 1 0.2 0.2 {}
+T {iovdd} 75 -74 0 1 0.2 0.2 {}
+T {core} -135 -24 0 1 0.2 0.2 {}
+T {pad} 155 -24 0 1 0.2 0.2 {}
+T {iovss} 75 66 0 1 0.2 0.2 {}
+T {vss} -45 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUp.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUp.sch
new file mode 100644
index 00000000..5182ccf5
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUp.sch
@@ -0,0 +1,229 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -90 -10 -90 10 {
+lab=i_n}
+N -160 -60 -130 -60 {
+lab=i}
+N -160 -10 -160 40 {
+lab=i}
+N -160 40 -130 40 {
+lab=i}
+N -200 -10 -160 -10 {
+lab=i}
+N -160 -60 -160 -10 {
+lab=i}
+N -90 -100 -90 -90 {
+lab=vdd}
+N -90 90 -90 110 {
+lab=vss}
+N 70 -10 70 20 {
+lab=lvld}
+N 220 -0 220 20 {
+lab=lvld_n}
+N 390 -10 390 20 {
+lab=o}
+N -90 -10 -0 -10 {
+lab=i_n}
+N -90 -30 -90 -10 {
+lab=i_n}
+N -0 -10 0 50 {
+lab=i_n}
+N 0 50 30 50 {
+lab=i_n}
+N 260 110 390 110 {
+lab=vss}
+N 390 80 390 110 {
+lab=vss}
+N 70 80 70 110 {
+lab=vss}
+N -90 110 70 110 {
+lab=vss}
+N 220 80 220 110 {
+lab=vss}
+N 180 110 220 110 {
+lab=vss}
+N 70 50 110 50 {
+lab=vss}
+N 110 50 110 110 {
+lab=vss}
+N 70 110 110 110 {
+lab=vss}
+N 220 50 260 50 {
+lab=vss}
+N 260 50 260 110 {
+lab=vss}
+N 220 110 260 110 {
+lab=vss}
+N 390 50 430 50 {
+lab=vss}
+N 430 50 430 110 {
+lab=vss}
+N 390 110 430 110 {
+lab=vss}
+N 70 -140 70 -110 {
+lab=iovdd}
+N 250 -140 390 -140 {
+lab=iovdd}
+N 390 -140 390 -100 {
+lab=iovdd}
+N 220 -140 220 -110 {
+lab=iovdd}
+N 180 -140 220 -140 {
+lab=iovdd}
+N 70 -80 110 -80 {
+lab=iovdd}
+N 110 -140 110 -80 {
+lab=iovdd}
+N 70 -140 110 -140 {
+lab=iovdd}
+N 220 -80 250 -80 {
+lab=iovdd}
+N 250 -140 250 -80 {
+lab=iovdd}
+N 220 -140 250 -140 {
+lab=iovdd}
+N 390 -70 430 -70 {
+lab=iovdd}
+N 430 -140 430 -70 {
+lab=iovdd}
+N 390 -140 430 -140 {
+lab=iovdd}
+N 320 -70 350 -70 {
+lab=lvld_n}
+N 320 0 320 50 {
+lab=lvld_n}
+N 320 50 350 50 {
+lab=lvld_n}
+N 220 -0 320 0 {
+lab=lvld_n}
+N 220 -30 220 -0 {
+lab=lvld_n}
+N 320 -70 320 0 {
+lab=lvld_n}
+N 10 -80 30 -80 {
+lab=lvld_n}
+N 10 -80 10 -30 {
+lab=lvld_n}
+N 10 -30 220 -30 {
+lab=lvld_n}
+N 220 -50 220 -30 {
+lab=lvld_n}
+N 70 -10 150 -10 {
+lab=lvld}
+N 70 -50 70 -10 {
+lab=lvld}
+N 150 -80 150 -10 {
+lab=lvld}
+N 150 -80 180 -80 {
+lab=lvld}
+N 390 -10 470 -10 {
+lab=o}
+N 390 -40 390 -10 {
+lab=o}
+N 180 110 180 150 {
+lab=vss}
+N 110 110 180 110 {
+lab=vss}
+N 180 -180 180 -140 {
+lab=iovdd}
+N 110 -140 180 -140 {
+lab=iovdd}
+N -160 40 -160 100 {
+lab=i}
+N -160 100 180 100 {
+lab=i}
+N 180 50 180 100 {
+lab=i}
+N -90 -60 -70 -60 {
+lab=vdd}
+N -70 -100 -70 -60 {
+lab=vdd}
+N -90 -100 -70 -100 {
+lab=vdd}
+N -90 -120 -90 -100 {
+lab=vdd}
+N -90 40 -70 40 {
+lab=vss}
+N -70 40 -70 90 {
+lab=vss}
+N -90 90 -70 90 {
+lab=vss}
+N -90 70 -90 90 {
+lab=vss}
+C {sg13g2_pr/sg13_lv_nmos.sym} -110 40 2 1 {name=M1
+l=0.13u
+w=2.75u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_pmos.sym} -110 -60 0 0 {name=M2
+l=0.13u
+w=4.75u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 50 50 0 0 {name=M3
+l=0.45u
+w=1.9u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 200 50 0 0 {name=M4
+l=0.45u
+w=1.9u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 370 50 0 0 {name=M5
+l=0.45u
+w=1.9u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 50 -80 0 0 {name=M6
+l=0.45u
+w=0.3u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 200 -80 0 0 {name=M7
+l=0.45u
+w=0.3u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 370 -70 0 0 {name=M8
+l=0.45u
+w=3.9u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {devices/iopin.sym} 180 150 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} 180 -180 0 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} -90 -120 0 0 {name=vdd lab=vdd}
+C {devices/ipin.sym} -200 -10 0 0 {name=i lab=i}
+C {devices/opin.sym} 470 -10 0 0 {name=o lab=o}
+C {devices/lab_pin.sym} -50 -10 0 0 {name=p1 sig_type=std_logic lab=i_n}
+C {devices/lab_pin.sym} 100 -10 0 0 {name=p2 sig_type=std_logic lab=lvld}
+C {devices/lab_pin.sym} 220 -20 0 0 {name=p3 sig_type=std_logic lab=lvld_n}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUp.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUp.sym
new file mode 100644
index 00000000..0d3540c3
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUp.sym
@@ -0,0 +1,31 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 4 -150 0 -130 0 {}
+L 4 130 0 150 0 {}
+L 7 50 -60 50 -40 {}
+L 7 -10 -60 -10 -40 {}
+L 7 -10 40 -10 60 {}
+B 5 47.5 -62.5 52.5 -57.5 {name=iovdd dir=inout}
+B 5 -12.5 -62.5 -7.5 -57.5 {name=vdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=i dir=in}
+B 5 147.5 -2.5 152.5 2.5 {name=o dir=out}
+B 5 -12.5 57.5 -7.5 62.5 {name=vss dir=inout}
+T {sg13g2__LevelUp} -81 -6 0 0 0.3 0.3 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} 45 -54 0 1 0.2 0.2 {}
+T {vdd} -15 -54 0 1 0.2 0.2 {}
+T {i} -145 -14 0 0 0.2 0.2 {}
+T {o} 145 -14 0 1 0.2 0.2 {}
+T {vss} -15 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUpInv.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUpInv.sch
new file mode 100644
index 00000000..c8a8d363
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUpInv.sch
@@ -0,0 +1,228 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+T {i_n} 970 -410 0 0 0.2 0.2 {}
+T {lvld_n} 1080 -390 0 0 0.2 0.2 {}
+T {lvld} 1230 -380 0 0 0.2 0.2 {}
+N 870 -520 870 -480 {
+lab=vdd}
+N 870 -450 910 -450 {
+lab=vdd}
+N 910 -520 910 -450 {
+lab=vdd}
+N 870 -520 910 -520 {
+lab=vdd}
+N 870 -570 870 -520 {
+lab=vdd}
+N 870 -250 870 -220 {
+lab=vss}
+N 870 -340 910 -340 {
+lab=vss}
+N 910 -340 910 -270 {
+lab=vss}
+N 870 -270 910 -270 {
+lab=vss}
+N 870 -310 870 -270 {
+lab=vss}
+N 870 -390 870 -370 {
+lab=#net1}
+N 780 -450 830 -450 {
+lab=i}
+N 780 -400 780 -340 {
+lab=i}
+N 780 -340 830 -340 {
+lab=i}
+N 720 -400 780 -400 {
+lab=i}
+N 780 -450 780 -400 {
+lab=i}
+N 1110 -250 1250 -250 {
+lab=vss}
+N 870 -270 870 -250 {
+lab=vss}
+N 1250 -280 1250 -250 {
+lab=vss}
+N 1250 -330 1280 -330 {
+lab=vss}
+N 1280 -330 1280 -280 {
+lab=vss}
+N 1250 -280 1280 -280 {
+lab=vss}
+N 1250 -300 1250 -280 {
+lab=vss}
+N 1110 -280 1110 -250 {
+lab=vss}
+N 870 -250 1110 -250 {
+lab=vss}
+N 1110 -330 1140 -330 {
+lab=vss}
+N 1140 -330 1140 -280 {
+lab=vss}
+N 1110 -280 1140 -280 {
+lab=vss}
+N 1110 -300 1110 -280 {
+lab=vss}
+N 870 -390 1010 -390 {
+lab=#net1}
+N 870 -420 870 -390 {
+lab=#net1}
+N 1010 -390 1010 -330 {
+lab=#net1}
+N 1010 -330 1070 -330 {
+lab=#net1}
+N 1110 -390 1110 -360 {
+lab=#net2}
+N 1250 -410 1250 -360 {
+lab=#net3}
+N 1070 -410 1250 -410 {
+lab=#net3}
+N 1250 -460 1250 -410 {
+lab=#net3}
+N 1070 -490 1070 -410 {
+lab=#net3}
+N 1110 -430 1210 -430 {
+lab=#net2}
+N 1110 -460 1110 -430 {
+lab=#net2}
+N 1210 -490 1210 -430 {
+lab=#net2}
+N 1110 -560 1110 -520 {
+lab=iovdd}
+N 1190 -560 1250 -560 {
+lab=iovdd}
+N 1250 -560 1250 -520 {
+lab=iovdd}
+N 1250 -490 1290 -490 {
+lab=iovdd}
+N 1290 -560 1290 -490 {
+lab=iovdd}
+N 1250 -560 1290 -560 {
+lab=iovdd}
+N 1110 -490 1150 -490 {
+lab=iovdd}
+N 1150 -560 1150 -490 {
+lab=iovdd}
+N 1110 -560 1150 -560 {
+lab=iovdd}
+N 1190 -600 1190 -560 {
+lab=iovdd}
+N 1150 -560 1190 -560 {
+lab=iovdd}
+N 1460 -410 1460 -360 {
+lab=xxx}
+N 1370 -490 1420 -490 {
+lab=#net4}
+N 1370 -390 1370 -330 {
+lab=#net4}
+N 1370 -330 1420 -330 {
+lab=#net4}
+N 1460 -410 1550 -410 {
+lab=xxx}
+N 1460 -460 1460 -410 {
+lab=xxx}
+N 1460 -270 1460 -250 {
+lab=vss}
+N 1250 -250 1460 -250 {
+lab=vss}
+N 1460 -330 1490 -330 {
+lab=vss}
+N 1490 -330 1490 -270 {
+lab=vss}
+N 1460 -270 1490 -270 {
+lab=vss}
+N 1460 -300 1460 -270 {
+lab=vss}
+N 1460 -540 1460 -520 {
+lab=iovdd}
+N 1290 -560 1460 -560 {
+lab=iovdd}
+N 1460 -490 1490 -490 {
+lab=iovdd}
+N 1490 -540 1490 -490 {
+lab=iovdd}
+N 1460 -540 1490 -540 {
+lab=iovdd}
+N 1460 -560 1460 -540 {
+lab=iovdd}
+N 780 -340 780 -160 {}
+N 780 -160 1200 -160 {}
+N 1200 -330 1200 -160 {}
+N 1200 -330 1210 -330 {}
+N 1110 -390 1370 -390 {}
+N 1110 -430 1110 -390 {
+lab=#net2}
+N 1370 -490 1370 -390 {
+lab=#net4}
+C {sg13g2_pr/sg13_lv_nmos.sym} 850 -340 2 1 {name=M1
+l=0.13u
+w=2.75u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_pmos.sym} 850 -450 0 0 {name=M2
+l=0.13u
+w=4.75u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1090 -330 2 1 {name=M3
+l=0.45u
+w=1.9u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1230 -330 2 1 {name=M4
+l=0.45u
+w=1.9u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1090 -490 0 0 {name=M5
+l=0.45u
+w=0.3u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1230 -490 0 0 {name=M6
+l=0.45u
+w=0.3u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_nmos.sym} 1440 -330 0 0 {name=M7
+l=0.45u
+w=1.9u
+ng=1
+m=1
+model=sg13_hv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1440 -490 0 0 {name=M8
+l=0.45u
+w=3.9u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {devices/iopin.sym} 720 -400 2 0 {name=i lab=i}
+C {devices/iopin.sym} 870 -220 1 0 {name=vss lab=vss}
+C {devices/iopin.sym} 870 -570 3 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 1190 -600 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 1550 -410 0 0 {name=o lab=o}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUpInv.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUpInv.sym
new file mode 100644
index 00000000..671011f5
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_LevelUpInv.sym
@@ -0,0 +1,31 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -50 130 -50 {}
+L 4 -130 50 130 50 {}
+L 4 -130 -50 -130 50 {}
+L 4 130 -50 130 50 {}
+L 7 30 -70 30 -50 {}
+L 7 -20 -70 -20 -50 {}
+L 7 130 0 150 0 {}
+L 7 -150 0 -130 0 {}
+L 7 -20 50 -20 70 {}
+B 5 27.5 -72.5 32.5 -67.5 {name=iovdd dir=inout}
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diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampInverter.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampInverter.sch
new file mode 100644
index 00000000..90f00c9a
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampInverter.sch
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+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2495 -470 0 0 {name=M50
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2635 -470 0 0 {name=M51
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -25 -340 0 0 {name=M52
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 95 -340 0 0 {name=M53
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 235 -340 0 0 {name=M54
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 355 -340 0 0 {name=M55
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 475 -340 0 0 {name=M56
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 595 -340 0 0 {name=M57
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -155 -340 0 0 {name=M58
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -280 -340 0 0 {name=M59
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} -420 -340 0 0 {name=M60
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 735 -340 0 0 {name=M61
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1245 -340 0 0 {name=M62
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1365 -340 0 0 {name=M63
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1505 -340 0 0 {name=M64
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1625 -340 0 0 {name=M65
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1745 -340 0 0 {name=M66
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1865 -340 0 0 {name=M67
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 1115 -340 0 0 {name=M68
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 990 -340 0 0 {name=M69
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 850 -340 0 0 {name=M70
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2005 -340 0 0 {name=M71
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2130 -340 0 0 {name=M72
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2250 -340 0 0 {name=M73
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2370 -340 0 0 {name=M74
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2490 -340 0 0 {name=M75
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_hv_pmos.sym} 2630 -340 0 0 {name=M76
+l=0.5u
+w=7.0u
+ng=1
+m=1
+model=sg13_hv_pmos
+spiceprefix=X
+}
+C {devices/iopin.sym} 825 -605 3 0 {name=supply lab=supply}
+C {devices/iopin.sym} 390 225 1 0 {name=ground lab=ground}
+C {devices/opin.sym} 1120 -130 0 0 {name=out lab=out}
+C {devices/ipin.sym} -585 -110 0 0 {name=in lab=in}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampInverter.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampInverter.sym
new file mode 100644
index 00000000..24cf1503
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampInverter.sym
@@ -0,0 +1,29 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -30 130 -30 {}
+L 4 -130 30 130 30 {}
+L 4 -130 -30 -130 30 {}
+L 4 130 -30 130 30 {}
+L 4 130 0 150 0 {}
+L 4 -150 0 -130 0 {}
+L 7 10 -50 10 -30 {}
+L 7 10 30 10 50 {}
+B 5 7.5 -52.5 12.5 -47.5 {name=supply dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=out dir=out}
+B 5 -152.5 -2.5 -147.5 2.5 {name=in dir=in}
+B 5 7.5 47.5 12.5 52.5 {name=ground dir=inout}
+T {sg13g2_RCClampInverter
+} -67 -6 0 0 0.2 0.2 {}
+T {@name} 135 -42 0 0 0.2 0.2 {}
+T {supply} 45 -44 0 1 0.2 0.2 {}
+T {out} 125 -4 0 1 0.2 0.2 {}
+T {in} -145 -14 0 0 0.2 0.2 {}
+T {ground} 55 36 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampResistor.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampResistor.sch
new file mode 100644
index 00000000..290347e1
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampResistor.sch
@@ -0,0 +1,273 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -690 -270 -690 -220 {
+lab=pin1}
+N -690 -380 -690 -330 {
+lab=#net1}
+N -690 -490 -690 -440 {
+lab=#net2}
+N -690 -600 -690 -550 {
+lab=#net3}
+N -690 -660 -510 -660 {
+lab=#net4}
+N -510 -600 -510 -550 {
+lab=#net5}
+N -510 -490 -510 -440 {
+lab=#net6}
+N -510 -380 -510 -330 {
+lab=#net7}
+N -510 -270 -330 -270 {
+lab=#net8}
+N -330 -380 -330 -330 {
+lab=#net9}
+N -330 -490 -330 -440 {
+lab=#net10}
+N -330 -600 -330 -550 {
+lab=#net11}
+N -330 -660 -180 -660 {
+lab=#net12}
+N -180 -600 -180 -550 {
+lab=#net13}
+N -180 -490 -180 -440 {
+lab=#net14}
+N -180 -380 -180 -330 {
+lab=#net15}
+N -180 -270 -20 -270 {
+lab=#net16}
+N -20 -380 -20 -330 {
+lab=#net17}
+N -20 -490 -20 -440 {
+lab=#net18}
+N -20 -600 -20 -550 {
+lab=#net19}
+N -20 -660 150 -660 {
+lab=#net20}
+N 150 -660 150 -650 {
+lab=#net20}
+N 150 -590 150 -540 {
+lab=#net21}
+N 150 -480 150 -430 {
+lab=#net22}
+N 150 -370 150 -320 {
+lab=#net23}
+N 150 -260 310 -260 {
+lab=#net24}
+N 310 -360 310 -320 {
+lab=#net25}
+N 310 -460 310 -420 {
+lab=xxx}
+C {sg13g2_pr/rppd.sym} -690 -300 0 0 {name=R1
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -690 -410 0 0 {name=R2
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -690 -520 0 0 {name=R3
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -690 -630 0 0 {name=R4
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -510 -300 0 0 {name=R5
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -510 -410 0 0 {name=R6
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -510 -520 0 0 {name=R7
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -510 -630 0 0 {name=R8
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -330 -300 0 0 {name=R9
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -330 -410 0 0 {name=R10
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -330 -520 0 0 {name=R11
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -330 -630 0 0 {name=R12
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -180 -300 0 0 {name=R13
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -180 -410 0 0 {name=R14
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -180 -520 0 0 {name=R15
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -180 -630 0 0 {name=R16
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -20 -300 0 0 {name=R17
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -20 -410 0 0 {name=R18
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -20 -520 0 0 {name=R19
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} -20 -630 0 0 {name=R20
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} 150 -290 0 0 {name=R21
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} 150 -400 0 0 {name=R22
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} 150 -510 0 0 {name=R23
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} 150 -620 0 0 {name=R24
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} 310 -290 0 0 {name=R25
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/rppd.sym} 310 -390 0 0 {name=R26
+w=1.0e-6
+l=20.0e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {devices/iopin.sym} -690 -220 0 0 {name=pin1 lab=pin1}
+C {devices/iopin.sym} 310 -460 0 0 {name=pin2 lab=pin2}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampResistor.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampResistor.sym
new file mode 100644
index 00000000..601d7702
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_RCClampResistor.sym
@@ -0,0 +1,17 @@
+v {xschem version=3.4.4 file_version=1.2}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+T {@symname} -117 -6 0 0 0.3 0.3 {}
+T {@name} 135 -32 0 0 0.2 0.2 {}
+L 4 -130 -20 130 -20 {}
+L 4 -130 20 130 20 {}
+L 4 -130 -20 -130 20 {}
+L 4 130 -20 130 20 {}
+B 5 147.5 -12.5 152.5 -7.5 {name=pin2 dir=inout}
+L 7 130 -10 150 -10 {}
+T {pin2} 125 -14 0 1 0.2 0.2 {}
+B 5 147.5 7.5 152.5 12.5 {name=pin1 dir=inout}
+L 7 130 10 150 10 {}
+T {pin1} 125 6 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_SecondaryProtection.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_SecondaryProtection.sch
new file mode 100644
index 00000000..97db89c2
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_SecondaryProtection.sch
@@ -0,0 +1,47 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 0 90 -0 130 {
+lab=iovss}
+N 0 -140 0 -90 {
+lab=iovdd}
+N -60 0 0 -0 {
+lab=core}
+N -180 0 -120 -0 {
+lab=pad}
+N 0 10 120 10 {
+lab=core}
+N 0 -0 0 10 {
+lab=core}
+N -0 -30 0 0 {
+lab=core}
+N 0 10 -0 30 {
+lab=core}
+C {sg13g2_pr/rppd.sym} -90 0 1 1 {name=R1
+w=1e-6
+l=2e-6
+model=rppd
+spiceprefix=X
+b=0
+m=1
+}
+C {sg13g2_pr/dantenna.sym} 0 60 0 0 {name=D1
+model=dantenna
+l=3.1u
+w=0.64u
+spiceprefix=X
+}
+C {sg13g2_pr/dpantenna.sym} 0 -60 0 0 {name=D2
+model=dpantenna
+l=0.64u
+w=4.98u
+spiceprefix=X
+}
+C {devices/iopin.sym} 0 -140 3 0 {name=iovdd lab=iovdd}
+C {devices/iopin.sym} 0 130 1 0 {name=iovss lab=iovss}
+C {devices/iopin.sym} 120 10 0 0 {name=core lab=core}
+C {devices/iopin.sym} -180 0 2 0 {name=pad lab=pad}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_SecondaryProtection.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_SecondaryProtection.sym
new file mode 100644
index 00000000..10ba74e0
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_SecondaryProtection.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -130 -40 130 -40 {}
+L 4 -130 40 130 40 {}
+L 4 -130 -40 -130 40 {}
+L 4 130 -40 130 40 {}
+L 7 0 -60 0 -40 {}
+L 7 -150 0 -130 0 {}
+L 7 130 0 150 0 {}
+L 7 0 40 0 60 {}
+B 5 -2.5 -62.5 2.5 -57.5 {name=iovdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=pad dir=inout}
+B 5 147.5 -2.5 152.5 2.5 {name=core dir=inout}
+B 5 -2.5 57.5 2.5 62.5 {name=iovss dir=inout}
+T {sg13g2_SecondaryProtection} -70 -6 0 0 0.2 0.2 {}
+T {@name} 135 -52 0 0 0.2 0.2 {}
+T {iovdd} 15 -34 0 1 0.2 0.2 {}
+T {pad} -105 -4 0 1 0.2 0.2 {}
+T {core} 125 -4 0 1 0.2 0.2 {}
+T {iovss} 15 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_inv_x1.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_inv_x1.sch
new file mode 100644
index 00000000..6d9d1ce1
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_inv_x1.sch
@@ -0,0 +1,63 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 160 -190 160 -170 {
+lab=vdd}
+N 160 -140 220 -140 {
+lab=vdd}
+N 220 -190 220 -140 {
+lab=vdd}
+N 160 -190 220 -190 {
+lab=vdd}
+N 160 -220 160 -190 {
+lab=vdd}
+N 80 -140 120 -140 {
+lab=i}
+N 80 -90 80 -40 {
+lab=i}
+N 40 -90 80 -90 {
+lab=i}
+N 80 -140 80 -90 {
+lab=i}
+N 160 -90 160 -70 {
+lab=nq}
+N 160 20 160 50 {
+lab=vss}
+N 160 -40 210 -40 {
+lab=vss}
+N 210 -40 210 20 {
+lab=vss}
+N 160 20 210 20 {
+lab=vss}
+N 160 -10 160 20 {
+lab=vss}
+N 80 -40 120 -40 {
+lab=i}
+N 160 -90 260 -90 {
+lab=nq}
+N 160 -110 160 -90 {
+lab=nq}
+C {sg13g2_pr/sg13_lv_pmos.sym} 140 -140 0 0 {name=M2
+l=0.13u
+w=4.41u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_nmos.sym} 140 -40 2 1 {name=M1
+l=0.13u
+w=3.93u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {devices/ipin.sym} 40 -90 0 0 {name=i lab=i}
+C {devices/iopin.sym} 160 -220 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 160 50 0 0 {name=vss lab=vss}
+C {devices/opin.sym} 260 -90 0 0 {name=nq lab=nq}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_inv_x1.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_inv_x1.sym
new file mode 100644
index 00000000..7353113f
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_inv_x1.sym
@@ -0,0 +1,28 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -150 0 -130 0 {}
+L 4 70 0 90 0 {}
+L 4 -130 -60 -130 50 {}
+L 4 -130 50 50 0 {}
+L 4 -130 -60 50 0 {}
+L 7 -40 -50 -40 -30 {}
+L 7 -40 20 -40 40 {}
+B 5 -42.5 -52.5 -37.5 -47.5 {name=vdd dir=inout}
+B 5 -152.5 -2.5 -147.5 2.5 {name=i dir=in}
+B 5 87.5 -2.5 92.5 2.5 {name=nq dir=out}
+B 5 -42.5 37.5 -37.5 42.5 {name=vss dir=inout}
+A 4 62.5 0 12.5 306.869897645844 360 {}
+T {sg13g2_io_inv_x1} -100 -6 0 0 0.2 0.2 {}
+T {@name} 5 -32 0 0 0.2 0.2 {}
+T {vdd} -15 -44 0 1 0.2 0.2 {}
+T {i} -145 6 0 0 0.2 0.2 {}
+T {nq} 95 6 0 1 0.2 0.2 {}
+T {vss} -15 26 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nand2_x1.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nand2_x1.sch
new file mode 100644
index 00000000..165aa504
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nand2_x1.sch
@@ -0,0 +1,122 @@
+v {xschem version=3.4.5 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N -20 -160 -20 -110 {
+lab=nq}
+N 60 -110 190 -110 {
+lab=nq}
+N 190 -160 190 -110 {
+lab=nq}
+N 60 -90 60 -70 {
+lab=nq}
+N -20 -110 60 -110 {
+lab=nq}
+N 60 -10 60 40 {
+lab=#net1}
+N -20 -250 -20 -220 {
+lab=vdd}
+N 70 -280 190 -280 {
+lab=vdd}
+N 190 -240 190 -220 {
+lab=vdd}
+N 70 -340 70 -280 {
+lab=vdd}
+N -20 -280 70 -280 {
+lab=vdd}
+N 60 120 60 160 {
+lab=vss}
+N -30 -40 20 -40 {
+lab=i1}
+N -130 -190 -60 -190 {
+lab=i0}
+N 90 -190 150 -190 {
+lab=i1}
+N -20 -190 30 -190 {
+lab=vdd}
+N 30 -250 30 -190 {
+lab=vdd}
+N -20 -250 30 -250 {
+lab=vdd}
+N -20 -280 -20 -250 {
+lab=vdd}
+N 190 -190 240 -190 {
+lab=vdd}
+N 240 -240 240 -190 {
+lab=vdd}
+N 190 -240 240 -240 {
+lab=vdd}
+N 190 -280 190 -240 {
+lab=vdd}
+N 60 70 120 70 {
+lab=vss}
+N 120 70 120 120 {
+lab=vss}
+N 60 120 120 120 {
+lab=vss}
+N 60 100 60 120 {
+lab=vss}
+N 60 -40 150 -40 {
+lab=vss}
+N 150 -40 150 120 {
+lab=vss}
+N 120 120 150 120 {
+lab=vss}
+N -130 70 20 70 {
+lab=i0}
+N -130 -190 -130 70 {
+lab=i0}
+N -180 70 -130 70 {
+lab=i0}
+N -30 -130 -30 -40 {
+lab=i1}
+N -60 -40 -30 -40 {
+lab=i1}
+N -30 -130 90 -130 {
+lab=i1}
+N 90 -190 90 -130 {
+lab=i1}
+N 60 -90 300 -90 {
+lab=nq}
+N 60 -110 60 -90 {
+lab=nq}
+C {sg13g2_pr/sg13_lv_pmos.sym} 170 -190 0 0 {name=M2
+l=0.13u
+w=4.41u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_nmos.sym} 40 -40 2 1 {name=M3
+l=0.13u
+w=3.93u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_nmos.sym} 40 70 2 1 {name=M4
+l=0.13u
+w=3.93u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_pmos.sym} -40 -190 0 0 {name=M5
+l=0.13u
+w=4.41u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {devices/iopin.sym} 70 -340 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 60 160 0 0 {name=vss lab=vss}
+C {devices/ipin.sym} -180 70 0 0 {name=i0 lab=i0}
+C {devices/ipin.sym} -60 -40 0 0 {name=i1 lab=i1}
+C {devices/opin.sym} 300 -90 0 0 {name=nq lab=nq}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nand2_x1.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nand2_x1.sym
new file mode 100644
index 00000000..0c73e032
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nand2_x1.sym
@@ -0,0 +1,32 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 70 0 90 0 {}
+L 4 -150 -20 -130 -20 {}
+L 4 -150 20 -130 20 {}
+L 4 -130 -60 -130 60 {}
+L 4 -130 -60 -0 -60 {}
+L 4 -130 60 -0 60 {}
+L 7 -50 -80 -50 -60 {}
+L 7 -50 60 -50 80 {}
+B 5 -52.5 -82.5 -47.5 -77.5 {name=vdd dir=inout}
+B 5 87.5 -2.5 92.5 2.5 {name=nq dir=out}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=i1 dir=in}
+B 5 -152.5 17.5 -147.5 22.5 {name=i0 dir=in}
+B 5 -52.5 77.5 -47.5 82.5 {name=vss dir=inout}
+A 4 -10 0 60.8276253029822 279.4623222080256 161.0753555839487 {}
+A 4 60 -0 10 180 360 {}
+T {sg13g2_io_nand2_x1} -119 -6 0 0 0.3 0.3 {}
+T {@name} 35 -62 0 0 0.2 0.2 {}
+T {vdd} -25 -74 0 1 0.2 0.2 {}
+T {nq} 85 6 0 1 0.2 0.2 {}
+T {i1} -145 -34 0 0 0.2 0.2 {}
+T {i0} -145 6 0 0 0.2 0.2 {}
+T {vss} -25 66 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nor2_x1.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nor2_x1.sch
new file mode 100644
index 00000000..4f165523
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nor2_x1.sch
@@ -0,0 +1,118 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 40 -120 40 -90 {
+lab=#net1}
+N -30 0 -30 20 {
+lab=nq}
+N 40 0 120 0 {
+lab=nq}
+N -30 90 -30 110 {
+lab=vss}
+N 40 110 120 110 {
+lab=vss}
+N 120 100 120 110 {
+lab=vss}
+N 40 -20 40 0 {
+lab=nq}
+N -30 0 40 0 {
+lab=nq}
+N 40 -200 40 -180 {
+lab=vdd}
+N 40 -150 100 -150 {
+lab=vdd}
+N 100 -200 100 -150 {
+lab=vdd}
+N 40 -200 100 -200 {
+lab=vdd}
+N 40 -230 40 -200 {
+lab=vdd}
+N 40 -60 120 -60 {
+lab=vdd}
+N 120 -200 120 -60 {
+lab=vdd}
+N 100 -200 120 -200 {
+lab=vdd}
+N 40 110 40 160 {
+lab=vss}
+N -30 110 40 110 {
+lab=vss}
+N -30 -60 -0 -60 {
+lab=i0}
+N -110 50 -70 50 {
+lab=i1}
+N -30 50 0 50 {
+lab=vss}
+N 0 50 -0 90 {
+lab=vss}
+N -30 90 -0 90 {
+lab=vss}
+N -30 80 -30 90 {
+lab=vss}
+N 120 50 150 50 {
+lab=vss}
+N 120 100 150 100 {
+lab=vss}
+N 40 -20 210 -20 {
+lab=nq}
+N 40 -30 40 -20 {
+lab=nq}
+N 120 80 120 100 {
+lab=vss}
+N 120 0 120 20 {
+lab=nq}
+N 150 50 150 100 {
+lab=vss}
+N -110 -150 -0 -150 {
+lab=i1}
+N -110 -150 -110 50 {
+lab=i1}
+N -120 50 -110 50 {
+lab=i1}
+N -30 -60 -30 -10 {}
+N -50 -60 -30 -60 {
+lab=i0}
+N -30 -10 30 -10 {}
+N 30 -10 30 50 {}
+N 30 50 80 50 {}
+C {sg13g2_pr/sg13_lv_nmos.sym} -50 50 2 1 {name=M1
+l=0.13u
+w=3.93u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_pmos.sym} 20 -150 0 0 {name=M2
+l=0.13u
+w=4.41u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_nmos.sym} 100 50 2 1 {name=M3
+l=0.13u
+w=3.93u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_pmos.sym} 20 -60 0 0 {name=M4
+l=0.13u
+w=4.41u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {devices/iopin.sym} 40 160 0 0 {name=vss lab=vss}
+C {devices/iopin.sym} 40 -230 0 0 {name=vdd lab=vdd}
+C {devices/ipin.sym} -50 -60 0 0 {name=i0 lab=i0}
+C {devices/ipin.sym} -120 50 0 0 {name=i2 lab=i1}
+C {devices/opin.sym} 210 -20 0 0 {name=nq lab=nq}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nor2_x1.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nor2_x1.sym
new file mode 100644
index 00000000..fdb8c24d
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_nor2_x1.sym
@@ -0,0 +1,33 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+V {}
+S {}
+E {}
+L 4 -140 10 -120 10 {}
+L 4 20 0 40 0 {}
+L 4 -140 -10 -120 -10 {}
+L 4 -130 -40 -70 -40 {}
+L 4 -130 40 -70 40 {}
+L 7 -90 -60 -90 -40 {}
+L 7 -90 40 -90 60 {}
+B 5 -92.5 -62.5 -87.5 -57.5 {name=vdd dir=inout}
+B 5 -142.5 7.5 -137.5 12.5 {name=i0 dir=in}
+B 5 37.5 -2.5 42.5 2.5 {name=nq dir=out}
+B 5 -142.5 -12.5 -137.5 -7.5 {name=i1 dir=in}
+B 5 -92.5 57.5 -87.5 62.5 {name=vss dir=inout}
+A 4 -185 0 68.00735254367721 323.9726266148964 72.0547467702072 {}
+A 4 -95 85 127.4754878398196 41.82016988013577 36.86989764584401 {}
+A 4 -195 -260 325 292.6198649480405 14.25003269780359 {}
+A 4 10 0 10 270 360 {}
+T {sg13g2_io_nor2_x1} -114.5 -6 0 0 0.2 0.2 {}
+T {@name} -25 -42 0 0 0.2 0.2 {}
+T {vdd} -55 -64 0 1 0.2 0.2 {}
+T {i0} -135 16 0 0 0.2 0.2 {}
+T {nq} 35 6 0 1 0.2 0.2 {}
+T {i1} -135 -24 0 0 0.2 0.2 {}
+T {vss} -65 46 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_tie.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_tie.sch
new file mode 100644
index 00000000..4ccb95d6
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_tie.sch
@@ -0,0 +1,13 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 40 -60 40 -40 {
+lab=vdd}
+N 40 -20 40 10 {
+lab=xxx}
+C {devices/iopin.sym} 40 -60 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 40 10 0 0 {name=vss lab=vss}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_tie.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_tie.sym
new file mode 100644
index 00000000..f5aeb8e5
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_io_tie.sym
@@ -0,0 +1,17 @@
+v {xschem version=3.4.4 file_version=1.2}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+T {@symname} -76.5 -6 0 0 0.3 0.3 {}
+T {@name} 135 -32 0 0 0.2 0.2 {}
+L 4 -130 -20 130 -20 {}
+L 4 -130 20 130 20 {}
+L 4 -130 -20 -130 20 {}
+L 4 130 -20 130 20 {}
+B 5 147.5 -12.5 152.5 -7.5 {name=vdd dir=inout}
+L 7 130 -10 150 -10 {}
+T {vdd} 125 -14 0 1 0.2 0.2 {}
+B 5 147.5 7.5 152.5 12.5 {name=vss dir=inout}
+L 7 130 10 150 10 {}
+T {vss} 125 6 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.kicad_prl b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.kicad_prl
new file mode 100644
index 00000000..cd3b99ae
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.kicad_prl
@@ -0,0 +1,75 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "ratsnest_display_mode": 0,
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": true,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      12,
+      13,
+      14,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      33,
+      34,
+      35,
+      36
+    ],
+    "visible_layers": "fffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "meta": {
+    "filename": "sg13g2_ioinv_x1.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.kicad_pro b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.kicad_pro
new file mode 100644
index 00000000..1c17326e
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.kicad_pro
@@ -0,0 +1,298 @@
+{
+  "board": {
+    "layer_presets": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        1,
+        0,
+        1,
+        2
+      ],
+      [
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        2,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        1,
+        1,
+        1,
+        1,
+        1,
+        0,
+        1,
+        1,
+        1,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        2,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2
+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_label_syntax": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "sg13g2_ioinv_x1.kicad_pro",
+    "version": 1
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12.0,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.25,
+        "via_diameter": 0.8,
+        "via_drill": 0.4,
+        "wire_width": 6.0
+      }
+    ],
+    "meta": {
+      "version": 2
+    },
+    "net_colors": null
+  },
+  "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "specctra_dsn": "",
+      "step": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "annotate_start_num": 0,
+    "drawing": {
+      "default_line_thickness": 6.0,
+      "default_text_size": 50.0,
+      "field_names": [],
+      "intersheets_ref_own_page": false,
+      "intersheets_ref_prefix": "",
+      "intersheets_ref_short": false,
+      "intersheets_ref_show": false,
+      "intersheets_ref_suffix": "",
+      "junction_size_choice": 3,
+      "label_size_ratio": 0.375,
+      "pin_symbol_size": 25.0,
+      "text_offset_ratio": 0.15
+    },
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "meta": {
+      "version": 1
+    },
+    "net_format_name": "",
+    "ngspice": {
+      "fix_include_paths": true,
+      "fix_passive_vals": false,
+      "meta": {
+        "version": 0
+      },
+      "model_mode": 0,
+      "workbook_filename": ""
+    },
+    "page_layout_descr_file": "",
+    "plot_directory": "",
+    "spice_adjust_passive_values": false,
+    "spice_external_command": "spice \"%I\"",
+    "subpart_first_id": 65,
+    "subpart_id_separator": 0
+  },
+  "sheets": [],
+  "text_variables": {}
+}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.sch b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.sch
new file mode 100644
index 00000000..6d9d1ce1
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.sch
@@ -0,0 +1,63 @@
+v {xschem version=3.4.4 file_version=1.2
+}
+G {}
+K {}
+V {}
+S {}
+E {}
+N 160 -190 160 -170 {
+lab=vdd}
+N 160 -140 220 -140 {
+lab=vdd}
+N 220 -190 220 -140 {
+lab=vdd}
+N 160 -190 220 -190 {
+lab=vdd}
+N 160 -220 160 -190 {
+lab=vdd}
+N 80 -140 120 -140 {
+lab=i}
+N 80 -90 80 -40 {
+lab=i}
+N 40 -90 80 -90 {
+lab=i}
+N 80 -140 80 -90 {
+lab=i}
+N 160 -90 160 -70 {
+lab=nq}
+N 160 20 160 50 {
+lab=vss}
+N 160 -40 210 -40 {
+lab=vss}
+N 210 -40 210 20 {
+lab=vss}
+N 160 20 210 20 {
+lab=vss}
+N 160 -10 160 20 {
+lab=vss}
+N 80 -40 120 -40 {
+lab=i}
+N 160 -90 260 -90 {
+lab=nq}
+N 160 -110 160 -90 {
+lab=nq}
+C {sg13g2_pr/sg13_lv_pmos.sym} 140 -140 0 0 {name=M2
+l=0.13u
+w=4.41u
+ng=1
+m=1
+model=sg13_lv_pmos
+spiceprefix=X
+}
+C {sg13g2_pr/sg13_lv_nmos.sym} 140 -40 2 1 {name=M1
+l=0.13u
+w=3.93u
+ng=1
+m=1
+model=sg13_lv_nmos
+spiceprefix=X
+}
+C {devices/ipin.sym} 40 -90 0 0 {name=i lab=i}
+C {devices/iopin.sym} 160 -220 0 0 {name=vdd lab=vdd}
+C {devices/iopin.sym} 160 50 0 0 {name=vss lab=vss}
+C {devices/opin.sym} 260 -90 0 0 {name=nq lab=nq}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.sym b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.sym
new file mode 100644
index 00000000..f7e5b2f6
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/sg13g2_ioinv_x1.sym
@@ -0,0 +1,23 @@
+v {xschem version=3.4.4 file_version=1.2}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=x1"
+}
+T {@symname} -85.5 -6 0 0 0.3 0.3 {}
+T {@name} 135 -42 0 0 0.2 0.2 {}
+L 4 -130 -30 130 -30 {}
+L 4 -130 30 130 30 {}
+L 4 -130 -30 -130 30 {}
+L 4 130 -30 130 30 {}
+B 5 147.5 -22.5 152.5 -17.5 {name=vdd dir=inout}
+L 7 130 -20 150 -20 {}
+T {vdd} 125 -24 0 1 0.2 0.2 {}
+B 5 -152.5 -22.5 -147.5 -17.5 {name=i dir=in}
+L 4 -150 -20 -130 -20 {}
+T {i} -125 -24 0 0 0.2 0.2 {}
+B 5 147.5 -2.5 152.5 2.5 {name=nq dir=out}
+L 4 130 0 150 0 {}
+T {nq} 125 -4 0 1 0.2 0.2 {}
+B 5 147.5 17.5 152.5 22.5 {name=vss dir=inout}
+L 7 130 20 150 20 {}
+T {vss} 125 16 0 1 0.2 0.2 {}
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/simulations/tran_logic_not.v b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/simulations/tran_logic_not.v
new file mode 100644
index 00000000..29be438a
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/simulations/tran_logic_not.v
@@ -0,0 +1,76 @@
+// sch_path: /home/prabhat.dubey/OPEN_Source_IHP_PDK/IHP-Open-PDK/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_logic_not.sch
+module tran_logic_not
+(
+
+);
+wire out ;
+wire in ;
+wire net1 ;
+wire GND ;
+
+vsource
+#(
+.value ( "dc )
+)
+Vin ( 
+ .p( in ),
+ .m( GND )
+);
+
+
+vsource
+#(
+.value ( 1.2 )
+)
+Vdd ( 
+ .p( net1 ),
+ .m( GND )
+);
+
+
+sg13_lv_nmos
+#(
+.l ( 4.5e-07 ) ,
+.w ( 1e-06 ) ,
+.ng ( 1 ) ,
+.m ( 1 ) ,
+.model ( sg13_lv_nmos ) ,
+.spiceprefix ( X )
+)
+M1 ( 
+ .D( out ),
+ .G( in ),
+ .S( GND ),
+ .B( GND )
+);
+
+
+sg13_lv_pmos
+#(
+.l ( 4.5e-07 ) ,
+.w ( 1e-06 ) ,
+.ng ( 1 ) ,
+.m ( 1 ) ,
+.model ( sg13_lv_pmos ) ,
+.spiceprefix ( X )
+)
+M2 ( 
+ .D( out ),
+ .G( in ),
+ .S( net1 ),
+ .B( net1 )
+);
+
+
+.lib cornerMOSlv.lib mos_tt
+
+
+.param temp=27
+.control
+save all 
+tran 50p 20n
+meas tran tdelay TRIG v(in) VAl=0.9 FALl=1 TARG v(out) VAl=0.9 RISE=1
+write tran_logic_not.raw
+.endc
+
+endmodule
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/xschem/simulations/tran_mim_cap.v b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/simulations/tran_mim_cap.v
new file mode 100644
index 00000000..c17f365e
--- /dev/null
+++ b/ihp-sg13g2/libs.ref/sg13g2_io/xschem/simulations/tran_mim_cap.v
@@ -0,0 +1,66 @@
+// sch_path: /home/prabhat.dubey/OPEN_Source_IHP_PDK/IHP-Open-PDK/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_mim_cap.sch
+module tran_mim_cap
+(
+
+);
+wire REF ;
+wire G2 ;
+wire 0 ;
+wire G ;
+
+isource
+#(
+.value ( "pwl )
+)
+I1 ( 
+ .p( 0 ),
+ .m( G )
+);
+
+tran  R1 ( G ,  REF );
+
+isource
+#(
+.value ( "pwl )
+)
+I3 ( 
+ .p( 0 ),
+ .m( G2 )
+);
+
+tran  R3 ( G2 ,  REF );
+
+vsource
+#(
+.value ( -2 )
+)
+V1 ( 
+ .p( REF ),
+ .m( 0 )
+);
+
+
+cap_cmim
+#(
+.model ( cap_cmim ) ,
+.w ( 7e-06 ) ,
+.l ( 7e-06 ) ,
+.m ( 1 ) ,
+.spiceprefix ( X )
+)
+C2 ( 
+ .c0( G ),
+ .c1( 0 )
+);
+
+
+.control
+save all
+tran 10n 6u
+write test_mim_cap.raw
+.endc
+
+
+.lib $::SG13G2_MODELS/cornerCAP.lib cap_typ
+
+endmodule
diff --git a/ihp-sg13g2/libs.tech/ngspice/.spiceinit b/ihp-sg13g2/libs.tech/ngspice/.spiceinit
index 91ac0a1d..b8785d1f 100644
--- a/ihp-sg13g2/libs.tech/ngspice/.spiceinit
+++ b/ihp-sg13g2/libs.tech/ngspice/.spiceinit
@@ -4,7 +4,7 @@
 * export PDK_ROOT= installation_specific_directory/IHP-Open-PDK
 * export PDK=ihp-sg13g2 
 
-setcs sourcepath = (  $sourcepath $PDK_ROOT/$PDK/libs.tech/ngspice/models $PDK_ROOT/ihp-sg13g2/libs.ref/sg13g2_stdcell/spice )
+setcs sourcepath = (  $sourcepath $PDK_ROOT/$PDK/libs.tech/ngspice/models $PDK_ROOT/$PDK/libs.ref/sg13g2_stdcell/spice )
 *echo $sourcepath
 
 *option tnom=28
diff --git a/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/dc_diode_op.sch b/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/dc_diode_op.sch
index 82541c69..8970a325 100644
--- a/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/dc_diode_op.sch
+++ b/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/dc_diode_op.sch
@@ -5,7 +5,7 @@ K {}
 V {}
 S {}
 E {}
-B 2 -510 -700 290 -300 {flags=graph
+B 2 410 -230 1210 170 {flags=graph
 y1=-3e-06
 y2=2.3e-06
 ypos1=0
@@ -32,60 +32,42 @@ N -500 20 -500 40 {
 lab=GND}
 N -500 -100 -500 -40 {
 lab=#net1}
-N -500 -100 -350 -100 {
+N -500 -100 -170 -100 {
 lab=#net1}
-N -350 40 -350 50 {
-lab=GND}
-N -170 40 -170 50 {
-lab=GND}
-N -350 -30 -350 -20 {
+N -170 -30 -170 0 {
 lab=#net2}
-N -350 -100 -350 -90 {
-lab=#net1}
-N -170 -30 -170 -20 {
-lab=#net3}
 N -170 -100 -170 -90 {
 lab=#net1}
-N -350 -100 -170 -100 {
-lab=#net1}
+N -150 300 -150 330 {
+lab=GND}
+N -190 300 -190 320 {
+lab=GND}
 C {devices/gnd.sym} -500 40 0 0 {name=l2 lab=GND}
 C {devices/code_shown.sym} -520 -180 0 0 {name=MODEL only_toplevel=true
 format="tcleval( @value )"
 value="
 .include $::SG13G2_MODELS/diodes.lib
 "}
-C {devices/code_shown.sym} -120 -250 0 0 {name=NGSPICE only_toplevel=true 
+C {devices/code_shown.sym} 40 60 0 0 {name=NGSPICE only_toplevel=true 
 value="
 .param temp=27
 .control
 save all 
 op
-print I(Vmda) I(Vmdp) 
+print I(Vmdp) 
 reset 
 dc V1 -12 1 1m
 write dc_diode_op.raw
-wrdata dc_diode.csv I(Vmda) I(Vmdp)
+wrdata dc_diode.csv I(Vmdp)
 .endc
 "}
-C {devices/title.sym} -360 130 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
+C {devices/title.sym} -350 520 0 0 {name=l5 author="Copyright 2023 IHP PDK Authors"}
 C {devices/launcher.sym} -470 -260 0 0 {name=h5
 descr="Load IV curve" 
 tclcommand="xschem raw_read $netlist_dir/dc_diode_op.raw dc"
 }
-C {devices/gnd.sym} -170 50 0 0 {name=l3 lab=GND}
-C {devices/gnd.sym} -350 50 0 0 {name=l1 lab=GND}
+C {devices/gnd.sym} -150 330 0 0 {name=l3 lab=GND}
 C {devices/vsource.sym} -500 -10 0 0 {name=V1 value=0.7}
-C {devices/ammeter.sym} -350 -60 0 0 {name=Vmda}
 C {devices/ammeter.sym} -170 -60 0 0 {name=Vmdp}
-C {sg13g2_pr/dpantenna.sym} -350 10 2 0 {name=D2
-model=dpantenna
-l=0.78u
-w=0.78u
-spiceprefix=X
-}
-C {sg13g2_pr/dantenna.sym} -170 10 2 0 {name=D1
-model=dantenna
-l=0.78u
-w=0.78u
-spiceprefix=X
-}
+C {sg13g2_DCNDiode.sym} -170 150 1 0 {name=x1}
+C {devices/gnd.sym} -190 320 0 0 {name=l1 lab=GND}
diff --git a/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_logic_nand.sch b/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_logic_nand.sch
index 4e672c67..8b97a881 100644
--- a/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_logic_nand.sch
+++ b/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_logic_nand.sch
@@ -144,7 +144,7 @@ lab=out}
 C {devices/code_shown.sym} -290 190 0 0 {name=MODEL only_toplevel=true
 format="tcleval( @value )"
 value="
-.lib cornerMOSlv.lib mos_ff
+.lib cornerMOSlv.lib mos_tt
 "}
 C {devices/code_shown.sym} -330 -530 0 0 {name=NGSPICE only_toplevel=true 
 value="
diff --git a/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_mim_cap.sch b/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_mim_cap.sch
index 0ef32e27..6e032366 100644
--- a/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_mim_cap.sch
+++ b/ihp-sg13g2/libs.tech/xschem/sg13g2_tests/tran_mim_cap.sch
@@ -1,4 +1,4 @@
-v {xschem version=3.4.5 file_version=1.2
+v {xschem version=3.4.4 file_version=1.2
 * Copyright 2021 Stefan Frederik Schippers
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");