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Reading PCell Properties/Parameters using SKILL

frasheed

 Hello All,

I have a PCell that has nfet layout and I am writing a SKILL code to open the layout and label the Gate, Drain, Source and Bulk in layout. For that I need to read the parameters that where is the Gate, Drain and Sourcein layout. I tried some commands like :

pcGetParameters , pcGetParamLabelDefn, pcGetParamLabels, pcGetParamLayers but all of them are given me "Nil". Can anyone help me what's wrong ? Is it because the PCell doesn't have any properties ?

or is there any better way for labeling ?

Thanks

P.S: I didn't created that PCell and I am very beginner to SKILL.

 

Parents

  •  Hi there,

    The commands that you list would most likely be used with a graphical PCell rather than a SKILL PCell. I'm a little confused by your question, is the PCell an nfet itself, or does it instantiate an instance of an nfet inside the PCell?  Also, the terminals (G, D, S, B) are not parameters; these will be physical shapes that are associated with pins, nets and terminals (these last three are all logical database objects).

    If I understand you correctly you wish to label the terminals - this can be achieved in one of two ways: create labels within the PCell code, or label the terminals on the (each) instance. It may be possible that the instance pin names can be 'turned on' using the Options -> Display "Pin Names" setting, though I think this might apply to terminals in the layout rather than the instance terminalson instances...

    If you can clarify a bit more about what you have then hopefully we (forum members) may be able to help you.

    Regards,

    Lawrence.

Reply

  •  Hi there,

    The commands that you list would most likely be used with a graphical PCell rather than a SKILL PCell. I'm a little confused by your question, is the PCell an nfet itself, or does it instantiate an instance of an nfet inside the PCell?  Also, the terminals (G, D, S, B) are not parameters; these will be physical shapes that are associated with pins, nets and terminals (these last three are all logical database objects).

    If I understand you correctly you wish to label the terminals - this can be achieved in one of two ways: create labels within the PCell code, or label the terminals on the (each) instance. It may be possible that the instance pin names can be 'turned on' using the Options -> Display "Pin Names" setting, though I think this might apply to terminals in the layout rather than the instance terminalson instances...

    If you can clarify a bit more about what you have then hopefully we (forum members) may be able to help you.

    Regards,

    Lawrence.

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