Wyre
Newbie
I'm aware that the Foundry provides the different models - ss, ff, tt etc - which will be used to characterize a standard cell library and extract the .libs. And we use OCV's, which basically say that a single type of cell can vary across a die which in-turn causes variation in its delay.
I'm curious to know HOW does the foundry analyze these models and categorize them as given above? and for OCV's, how are they able to determine the probability i.e. percentage variation of a cell?
I'm curious to know HOW does the foundry analyze these models and categorize them as given above? and for OCV's, how are they able to determine the probability i.e. percentage variation of a cell?