supply.spi
The supply corners, as parameters rather than sources. A testbench writes
.param AVDD = {vdda}
VDD VDD_1V8 VSS pwl 0 0 10n {AVDD}
and the corner decides the value.
| Corner | vdda | vdde | vddh |
|---|---|---|---|
Vt typical | 1.8 | 3.0 | 12 |
Vl low | 1.7 | 2.4 | 10.8 |
Vh high | 1.9 | 3.6 | 13.2 |
vdda is the 1.8 V core supply at ±5%. vdde is the 3.0 V IO supply, spread much wider (−20% / +20%) because that is what the IO devices have to survive. vddh is the 12 V high voltage domain at ±10%.