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Liberate characterization of std.cells with sequential behavior

spyridoula

Hello,

I am trying to perform characterization with Liberate on  a custom cell library containing cells with sequential behavior (not FF or latch).

The tool doesn't seem to recognize the  feedback inside the cells and thus I do not get the correct arcs to take into account all possible transitions with respect to the previous output. I know that it is possible to use state tables (like the ones used in scan chains). However I cannot find any documentation of the format. I would appreciate if someone could give me a hint about the use of state tables or alternatives for the sequential element's characterization.

Thank you in advance!

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