Hi All,
I want to re-characterize the existing library to a lower supply voltage. I have been provided the extracted (with parasitics) netlist (.cir) of this tap-less cell library by the vendor.
> I generated the cell template file from existing .lib in .tcl format which contains cell definitions, delay/power templates with slew/load indices.
> The provided netlist however contains the VBN/VBP contact ports (along with its parasitics) which are not available in generated template (I assume the earlier characterization was done by connecting well contacts to the supply rails accordingly / or atleast that's what I'd do if I create a lib for my custom made cells).
> In this condition, re-characterization is not possible as Liberate does not see VBN/VBP in cell definitions of the template. Is it possible to indicate "Liberate" that those well contacts should be connected globally to respective supply rails during the characterization ?
> When doing the characterization, are those slew values for the given loads automatically re-calculated for the new supply voltage ?
Thanks
Anuradha