| **.subckt test_nmos G1v8 D1v8 B |
| *.ipin G1v8 |
| *.ipin D1v8 |
| *.ipin B |
| Vd1 D1v8 net1 0 |
| Vd3 D3v3 net2 0 |
| Vd2 D1v8 net3 0 |
| Vd4 D5v0 net4 0 |
| E1 D5v0 0 D1v8 0 '5/1.8' |
| E2 D3v3 0 D1v8 0 '3.3/1.8' |
| E3 G5v0 0 G1v8 0 '5/1.8' |
| E4 G3v3 0 G1v8 0 '3.3/1.8' |
| Vd5 D10v5 net5 0 |
| E5 D10v5 0 D1v8 0 '10.5/1.8' |
| E6 D16v0 0 D1v8 0 '16.0/1.8' |
| Vd6 D16v0 net6 0 |
| Vd7 D1v8 net7 0 |
| E7 D20v0 0 D1v8 0 '20.0/1.8' |
| XM1 net1 G1v8 S B sky130_fd_pr__nfet_01v8_lvt L=0.15 W=1 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| XM2 net3 G1v8 S B sky130_fd_pr__nfet_01v8 L=0.15 W=1 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| XM3 net2 G3v3 S B sky130_fd_pr__nfet_03v3_nvt L=0.5 W=1 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| XM4 net4 G5v0 S B sky130_fd_pr__nfet_05v0_nvt L=0.9 W=1 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| XM5 net5 G5v0 S B sky130_fd_pr__nfet_g5v0d10v5 L=0.5 W=1 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| XM6 net6 G5v0 S B sky130_fd_pr__nfet_g5v0d16v0 L=0.7 W=5.0 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| Vd8 D1v8 net8 0 |
| XM7 net7 G1v8 S B sky130_fd_pr__nfet_20v0 L=2.95 W=29.41 m=1 |
| XM16 net8 G1v8 S B sky130_fd_pr__nfet_20v0_zvt W=30 L=5 m=1 |
| **** begin user architecture code |
| |
| * this experimental option enables mos model bin |
| * selection based on W/NF instead of W |
| .option wnflag=1 |
| .option savecurrents |
| vg G1v8 0 1.8 |
| vs s 0 0 |
| vd D1v8 0 1.8 |
| vb b 0 0 |
| .control |
| save all |
| dc vd 0 1.8 0.01 vg 0 1.8 0.2 |
| * dc vd 0 1.8 0.01 vg 0 1.2 0.1 |
| plot all.vd1#branch vs D1v8 |
| *plot all.vd2#branch vs D1v8 |
| plot all.vd3#branch vs D3v3 |
| *plot all.vd4#branch vs D5v0 |
| plot all.vd5#branch vs D10v5 |
| *plot all.vd6#branch vs D16v0 |
| plot all.vd8#branch vs D1v8 |
| plot all.vd7#branch vs D1v8 |
| save @m.xm1.msky130_fd_pr__nfet_01v8_lvt[gm] |
| op |
| write test_nmos.raw |
| .endc |
| |
| |
| |
| ** manual skywater-pdk install (with patches applied). |
| |
| ** opencircuitdesign pdks install |
| |
| ** manual skywater pdks install (with patches applied) |
| * .lib /ef/tech/SW.2/sky130A/libs.tech/ngspice/models/sky130.lib.spice tt |
| |
| ** opencircuitdesign pdks install |
| .lib /ef/tech/SW.2/sky130A/libs.tech/ngspice/sky130.lib.spice tt |
| |
| .param mc_mm_switch=0 |
| .param mc_pr_switch=0 |
| |
| **** end user architecture code |
| **.ends |
| ** flattened .save nodes |
| .save I(Vd1) |
| .save I(Vd3) |
| .save I(Vd2) |
| .save I(Vd4) |
| .save I(Vd5) |
| .save I(Vd6) |
| .save I(Vd7) |
| .save I(Vd8) |
| .end |
