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Require Help regarding adding custom layer/extraction in GPDK45nm

Ryan18IITDelhi

Hi All, 

I am using gpdk 45nm & require some help regarding adding custom OXIDE  layer in Virtuoso layer  (say COXIDE). I am able to add custom layer in the layer pallete and draw it. But i have the below queries. 

1) How can i set the sheet resistance / capacitance values for the layer  and use the values in actual layout ? 

2) How do i query the above properties once set ? 

3) Can i do extraction and dump spice netlists for poly-COXIDE-poly ? 

4) Can i dump all required views for the poly-COXIDE-poly - like spectre / ivpcell / hspiceD ?  (i.e all the views other predefined cell has) 

Thanks & Regards,

Ryan_IITD

  • Quek

    Hi Ryan

    Here are my comments:

    1. Would you please provide more details on how you would like the values to be used? E.g. allow the values to be used by an auto-router? To be able to specify dimensions of devices with COXIDE layer based on the values?

    2. You can get the values using SKILL. E.g.
    tf=techGetTechFile(ddGetObj("gpdk045"))
    techGetLayerProp(tf "Metal1" "sheetResistance")

    3. Yes. It is possible to do it. You need to make the appropriate changes in LVS deck and Quantus package

    4. Yes, it is possible to create spectre, etc views. I think you meant this:
    - Create poly-coxide-poly as a device
    - Create a symbol view for it
    - Copy symbol view as auCdl, spectre and hspiceD views


    Thanks
    Quek

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