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  1. #1
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    Why lib file only include FF,TT and SS

    But the process corner includes five types, FF,TT ,SS SF and FS

    Thanks

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  2. #2
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    Re: Why lib file only include FF,TT and SS

    What modalities are you comparing?



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  3. #3
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    Re: Why lib file only include FF,TT and SS

    FS and SF corners are often not "realistic" (not even as
    realistic as the sandbagged SS corner). You cannot, for
    example, get a max-spec Tox on the N and a min-spec
    Tox on the P channel devices. Same for poly etch (deltaL)
    and active area etch (deltaW) and so on.

    So putting yourself on the hook for timing closure and such,
    for unrealistic events, would add only pain.



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