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Use separate power for handful of std cells and one macro

docdrew

Hey everyone,

First off, any help would be greatly appreciated and thank you to anyone who does respond.

I have a large design that uses a single VDD and VSS throughout, except for a single small portion that needs to be supplied by a separate power source.  The portion includes about 45 standard cells and a memory macro that will need their power pins attached to a different power supply that is given by a single pad's signal.  I have found some documentation on voltage islands, but I haven't been able to discern exactly how to apply it to my very simple design.  If you have done this or know how to, please HELP.

thanks

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