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about the function of dbCreateParamInst

b0719r

Hi Everyone,

I am using the function of  dbCreateParamInst to draw a rf nmos with w, l, #f can be changed, however, when I use this function as below:

 paramList=list(list("wf" "float" fw) list("lf" "float" fl) list("nf" "int" nf))
    a=-(0.98*nf/4-0.2)
    b=-fw/2
   inst= dbCreateParamInst(newCV master nil a:b "R180" 1 paramList)

the mos size can not be changed, which seems as default size. I think the problem is the propName I use, it may be wrong. but I use this names before in the 90nm, it works ok, when I use them into 65nm, it doesn't work anymore. 

Is anyone have the idea that how to find the propName? or how to solve this problem?

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  • Hi b0719r

    This is actually quite a common problem. There are generally 2 causes for it:

    a. Mismatch between property type in cdf and pcell codes. Please check if this is the cause. E.g. parameter "abc" is set to "float" in the pcell code but set as "string" in cdf.

    b. Need to trigger some pcell callbacks. This is harder to resolve and needs solution 11018344.


    Best regards
    Quek
Reply
  • Hi b0719r

    This is actually quite a common problem. There are generally 2 causes for it:

    a. Mismatch between property type in cdf and pcell codes. Please check if this is the cause. E.g. parameter "abc" is set to "float" in the pcell code but set as "string" in cdf.

    b. Need to trigger some pcell callbacks. This is harder to resolve and needs solution 11018344.


    Best regards
    Quek
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