| SRAM Cell Hold SNM | |
| * Static Noise Margin | |
| .lib "./libs/models/sky130.lib.spice" tt | |
| *** Inverter 1 | |
| XM1 qbar1 q1 gnd gnd sky130_fd_pr__nfet_01v8 w=0.42 l=0.21 | |
| XM2 qbar1 q1 vdd vdd sky130_fd_pr__pfet_01v8 w=0.84 l=0.21 | |
| *** Inverter 2 | |
| XM3 q2 qbar2 gnd gnd sky130_fd_pr__nfet_01v8 w=0.42 l=0.21 | |
| XM4 q2 qbar2 vdd vdd sky130_fd_pr__pfet_01v8 w=0.84 l=0.21 | |
| V1 vdd gnd dc 1.8V | |
| V2 q1 gnd dc 1.8V | |
| V3 qbar2 gnd dc 1.8V | |
| .dc V2 0 1.8 0.01 V3 0 1.8 0.01 | |
| .control | |
| run | |
| plot V(qbar1) vs V(q1) V(qbar2) vs V(q2) | |
| .endc | |
| .end | |