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Design based on Nangate 15nm OCL in cadence virtuoso environment

Carmichaeli

Hi everyone,

I plan to design a circuit under 15nm process technology, so I downloaded 15nm Nangate Open Cell Library (nangate.com) and corresponding PTM cards (ptm.asu.edu). But the 15nm Nangate OCL (2014_06.A) don't have virtuoso schematic cell (in 45nm process design package, Nangate OCL provides schematic cell library "NangateOpenCellLibrary" that can be imported into cadence directly). 
Could anybody tell me how I can use the 15nm OCL file and model cards to make a design in virtuoso environment as I did in 45nm process technology?

Thanks a lot!

Regards,
Wayne

  • Carmichaeli
    Actually, I copied the nmos4 and pmos4 symbols files twice from the analogLib into a new library (change the file name into nfet and pfet, build new symbol and spectre files through the nmos4/pmos4 symbol view) and use CDF to add a new parameter "nfin" to the new components.
    Then spice netlists from the 15nm OCL can be imported successfully into the virtuoso environment and generate corresponding schematic files. Up to now, no error happened. But when I used the schematic generated to do further simulation in ADE (14nm PTM model cards), a fatal error appeared like below:
    ERROR (SFE-1138): "/homes/.../models/14nfet.pm" 4: Model `nfet': nmos level 72 is not supported.
    ERROR (SFE-1138): "/homes/.../models/14pfet.pm" 4: Model `nfet': pmos level 72 is not supported.
    Can anybody tell me the reason for this and how to simulate successfully? (MMSIM101 version is used here)
  • Andrew Beckett

    You are using too old a version of MMSIM. In the initial versions of MMSIM101, level 72 was not recognized. In hotfixes of MMSIM101 sometime after MMSIM10.1.1 (and certainly in all versions of MMSIM111 and later), level 72 is mapped to the bsimcmg model (or possibly bsimmg dependent upon the parameters - I'm not sure as I don't have a working example). Since we've had MMSIM111, MMSIM121, MMSIM131 and MMSIM141 since then, you would be advised to use a newer version of the simulator (particularly since technology is moving fast, and a 15nm technology is pretty modern).

    Regards,

    Andrew.

  • Carmichaeli
    Thank you so much for reply. I think I need a newer version of MMSIM for simulation.
    Regards,
    Wayne.
  • monkeydliren

    i have the same question but the answers do not seem to be very match to this question, as to be honest, since we asked here, that means we dont know how to import them 

  • Andrew Beckett

    Unknown said:

    i have the same question but the answers do not seem to be very match to this question, as to be honest, since we asked here, that means we dont know how to import them 

    I have no idea what you're asking - please ask a clear question, otherwise nobody is going to be able to answer you!

    Regards,

    Andrew. 

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