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How to call an instance into layout

Muralidhar

Hi,

I am writing a program to call the devices from the technology library (P cells) using the following code

master=dbOpenCellViewByType("cmos28g" "nfet" "layout")    ;cmos28g is the library, nfet is the cell name and layout is view name

paralist=list(list("W" "float" "0.5") list("L" "float" "0.5"))

dbCreateParamInst= (geGetEditCellView() master "instname"  list(0 0) "R0" 1 paralist)

By excuting this program I am getting the instance in my layout but not with the parameters that I specified. It is coming with the same parameters that are in the original layout (i.e., in the cmos28g library layout).

Is there anything wrong in the program ?  (or) Do I need to include anything else?.  Please clarify it.

Thanks.

Parents
  • Then you must have the parameter names incorrect. Take a look at Tools -> CDF -> Edit for the nfet cell from the cmos28g library - I'm guessing the parameters are actually named something like "w" and "l" (lowercase) - but check for sure in the CDF. The instance you have created probably has properties for "W" and "L" rather than parameters for "w" and "l", hence you get a default device.

    Try again and report back.

    Lawrence.
Reply
  • Then you must have the parameter names incorrect. Take a look at Tools -> CDF -> Edit for the nfet cell from the cmos28g library - I'm guessing the parameters are actually named something like "w" and "l" (lowercase) - but check for sure in the CDF. The instance you have created probably has properties for "W" and "L" rather than parameters for "w" and "l", hence you get a default device.

    Try again and report back.

    Lawrence.
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