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Forums > Digital IC > Floorplanning, Place and route

Subject: STA considering IR drop
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clsantos
Posts: 31
Online: User is Offline
10/30/2006 6:59 AM  
Hello,

Worst case average IR drop is generated considering a PVT point which is different from both worst and best case PVT points for timing analysis (I use both corners to check hold and setup violations).

Should I run IR drop analysis considering:

  • the same PVT points I will use for STA?

  • the PVT point for worst IR drop and so run STA considering this PVT point?

  • the PVT point for worst IR drop but using the PVT point for worst/best case timing when running STA?

If I consider the PVT point for worst case voltage drop I won't check the worst/best case for STA, and checking worst/best case for STA I won't check for worst case for voltage drop. At the same time, if I use worst case for IR drop and worst/best case for STA I"m considering an invalid PVT point.

So, what is the recommended methodology to run a safe timing analysis considering IR drop?

Regards,

Cristiano.
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Forums > Digital IC > Floorplanning, Place and route > STA considering IR drop


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