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How to get Min and Max parameter values for PCells?

VadimBorisov

Dear all,

I have to create kind of "test generator" for PCells, for that reason I need to extract the min and max possible values for the parameters of a PCell.  

There is already the trend with the same question, but without a solution. 

https://community.cadence.com/cadence_technology_forums/f/48/p/33081/1348610

Andrew wrote there is no way to make it generically, however I have to make it. So maybe someone has an idea how to overcome the issue? 

Best regards,

Vadim

  • Vadim,

    I assume you mean:

     

    Replied to: How to get the minimum & maximum value of Device parameters ?
    Amar, Generally speaking, any minimum or maximum value of a parameter is checked by a CDF callback or similar - this is a bit of SKILL code that runs when you change a parameter in a field. The limits…
    By in Cadence Technology Forums > Custom IC SKILL
     

    (the link you gave doesn't work)

    Anyway, my answer there was (and still is) correct. There is no generic way to do this - there's no uniform location where the range limits (assuming there are any) are stored. You say you have to do this, but you can't do something that's actually impossible! The only way you could do this is to either know where such limits are stored for the PDK devices in question that you're trying to build your testing solution for, or keep your own data structures (or file) which contains this limit information and use that in your testing code. Precisely how you choose to do that is down to you and how  you want your code to work - I can't really give you an answer for your specific situation.

    Regards,

    Andrew.

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