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How to keep the pcell’s functionality after stream in

Carlsberg

Hello：

The question confused me for a long time.I have a project which change from IC51 to IC61.

When I stream out the layouts in IC51 as project.gds，and then I stream in the gds into IC61，

all pcells‘ parameters become default value（for example  a pmos which  W/L=1/3  in  IC51，become  W/L=0.44/0.18）.

IS there any possible way to fix this problem？

What I really want is：when I stream in the gds in IC61 every pcell’s parameter is the same as the one which in IC51.

Thank you very much！

Parents

  • This question makes no sense. When you stream out a database to "gds" then all pcells are converted to fixed geometries (usually in a cell per variant, although that depends on the option). If you then stream it back into IC61, it won't be a pcell any more - it's still a fixed cell.

    So I don't understand how pcell parameters can change - there's no pcell instances once you've streamed back in.

    What are you actually doing?

    Regards,

    Andrew

Reply

  • This question makes no sense. When you stream out a database to "gds" then all pcells are converted to fixed geometries (usually in a cell per variant, although that depends on the option). If you then stream it back into IC61, it won't be a pcell any more - it's still a fixed cell.

    So I don't understand how pcell parameters can change - there's no pcell instances once you've streamed back in.

    What are you actually doing?

    Regards,

    Andrew

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