Hspice Z-state

Thread Starter

haykp

Joined Oct 7, 2010
18
Dear Forum,

Could you please provide some info on how Z-state are being modeled in Hspice, I would like to know how the Z-state can be seen in waves.

The issues is that I am designing retention flop, and I need to calculate by simulation the wake-up time of the schema. So while on shut down mode the flop output is in Z state, but when it wakes-up the wire value is becoming Vdd, so the question is how to calculate the Z-to-1 time by simulation.

Thanks,
Hayk Petrosyan
 
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