Stats

  • Locked Locked
  • Replies 13
  • Subscribers 145
  • Views 23934
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How to create a transistor pcell in SKILL?

Elezebeth

Hi,

I am new to SKILL coding.I have not done any pcell coding in SKILL.I would like to know whether we can create mosfet pcells using SKILL code.The way I tried to do this is using rodCreateRect( ) to create different layers of the transistor say diffusion,poly,contacts etc.and allign all these layers using rodAlign( ).But the transistor that got created could not be deleted at a time....ie.the layout is flattened.If i select the rectangle that I have set as reference and try to delete the whole transistor layout doesn't get deleted, only that particular layer is deleted.

The other way I found is to do using ?subRectArray.but the problem with that is, the number of contacts in a transistor will increase as the width of the transistor increase.So the number of sub-rectangles that have to be created is variable.How to do that?

Can anybody please guide me on this?

Thanks and Regards,

Elezebeth 

 

 

  • in reply to youcanred

    Hi Jocelyn,

    That is a temporary file used during the pcDefinePCell call. It sounds as if /tmp has run out of disk space - you should check that and maybe clear up some space (lots of things are likely to go wrong in the operating system if /tmp is full anyway).

    Regards,

    Andrew.

  • in reply to Andrew Beckett

    Hi Andrew, I tried this transistor pcell code. changed the library name to my library name on both sides,

    But i am getting below warning message,Any idea what kind of error it is ? i tried this code in IC6.1.6

    *WARNING* (TECH-290096): techGetSpacingRule: Layer-purpose pair ("poly") was not defined.
    *WARNING* (TECH-290096): techGetSpacingRule: Layer-purpose pair ("cont") was not defined.
    *WARNING* (TECH-290096): techGetSpacingRule: Layer-purpose pair ("poly") was not defined.
    *WARNING* (TECH-290096): techGetSpacingRule: Layer-purpose pair ("poly") was not defined.
    *WARNING* (TECH-290096): techGetSpacingRule: Layer-purpose pair ("poly") was not defined.
    *WARNING* (TECH-290096): techGetOrderedSpacingRule: Layer-purpose pair ("cont") was not defined.
    *WARNING* (TECH-290096): techGetOrderedSpacingRule: Layer-purpose pair ("poly") was not defined.
    *WARNING* (TECH-290096): techGetOrderedSpacingRule: Layer-purpose pair ("metal1") was not defined.

    Thanks you

    Regards,

    Mohan

  • in reply to MOHANRAJ A

    Hi Mohan,

    As I said in my earlier reply (10 months ago) to this old thread from 11 years ago...

    Andrew Beckett said:
    You may also need to edit the layer names in the code too.

    So you'd need to change:

          (polyLayer "poly")
          (diffLayer "pdiff")
          (contLayer "cont")
          (metalLayer "metal1")

    to relevant layer names for your technology.

    Andrew.

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.