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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?

Parents
  • Hi Quek, Thank you for your answer, you are right, the set in cdf is string, which is not suitable with my code, but I think if it is this problem, then it should shows error but not showing no error. The thing now is that when I check the properties of this nmos, the width per finger, length per finger, and the number of fingers has changed, but the total width is not( it is always the default value), and if I change one of these parameters, the total width changes immediately. Moreover, when I use different technology, such as umc90nm, it works ok, I also checked its type, which is also "string" while I define is as "float" in skill, it still works. do you have any idea about this situation? Thank you again for your answer! Best regards, Aleck
Reply
  • Hi Quek, Thank you for your answer, you are right, the set in cdf is string, which is not suitable with my code, but I think if it is this problem, then it should shows error but not showing no error. The thing now is that when I check the properties of this nmos, the width per finger, length per finger, and the number of fingers has changed, but the total width is not( it is always the default value), and if I change one of these parameters, the total width changes immediately. Moreover, when I use different technology, such as umc90nm, it works ok, I also checked its type, which is also "string" while I define is as "float" in skill, it still works. do you have any idea about this situation? Thank you again for your answer! Best regards, Aleck
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