Extract SDF file for VDD when it is less than nominal VDD

[ebrahimi.khoy]

I want to extract the rise and fall delay of each element in circuit for different VDDs. What is the easiest solution?

For nominal VDD, I can use standard delay format extracted from modelsim. Is there any method to extract this format for other VDDs?

 

[maulin sheth]

SDF is generated on the basis of worst and best case....so by just changing the best and worst case library file...you can generate the SDF file for different VDDs in the same way as before....
Hello all,
pl correct me if any misunderstanding...

 

[ebrahimi.khoy]

SDF is generated on the basis of worst and best case....so by just changing the best and worst case library file...you can generate the SDF file for different VDDs in the same way as before....
Hello all,
pl correct me if any misunderstanding...

how can I update the library for other VDDs?

 

[maulin sheth]

As per my understanding, We are not updating as it is binary file....but we need to create again....

 

[ebrahimi.khoy]

As per my understanding, We are not updating as it is binary file....but we need to create again....

So, you mean that I should charachterize cells for different vdds and create new libraries using this information.

 

[maulin sheth]

Yea.. I am thinking in the same direction.........