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How to set the model parameter STIMOD in simulation?

Alex Liao
Hi

The STIMOD is the LOD stress effect model selector. I can view this after any simulation by printing the model parameter in virtuoso ADE. But I have checked the modelfile.scs which is included in any simulation. It is BSIM4.5 and no such selector found in it. Is there anybody who knows how to set this STIMOD? If it is in print MODEL parameter, it should come from somewhere. Anyone who has knowledge and presents here is highly appreciated.

Thanks,

Alex

  • Hi Andrew, I can change STIMOD now. The complex nets of include is the problem. Also stimod = 0 for UCB's model is documented in Spectre manual. But for Hspice, from the documentation" If VERSION>=4.3, the STI model is not dependent on STIMOD=0 or 1. In this case, the STI model is applied to the model similar to the UCB STI model". From this citation, it shows first, the meaning for stimod between Spectre and Hspice is different. Second, even I can force it to be 0 in Hspice model using the way you taught me in Spectre, it still uses its default model. (The STI cannot be switched off in this case)

    //   **********************************************

    //   *             TSMC SPICE MODEL               *

    //   **********************************************

    //     PROCESS :  65nm Mixed Signal RF SALICIDE Low-K IMD (1.0/2.5/over-drive 3.3V) (CRN65GPLUS) 

    //     MODEL   :  BSIM4 ( V4.5 )

    //     DOC. NO.:  T-N65-CM-SP-018  

    //     VERSION :  V1.0

    //     DATE    :  Nov. 22, 2007

    //     SPECTRE VERSION : 6.0.2.247 

    -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

     *  **********************************************

    *  *             TSMC SPICE MODEL               *

    *  **********************************************

    *    PROCESS :  65nm Mixed Signal RF SALICIDE Low-K IMD (1.0/2.5/over-drive 3.3V) (CRN65GPLUS) 

    *    MODEL   :  BSIM4 ( V4.5 ) 

    *    DOC. NO.:  T-N65-CM-SP-018   

    *    VERSION :  V1.0

    *    DATE    :  Nov. 22, 2007

    *    HSPICE VERSION : H2006.03 or 2007.03-SP1 later

     

    Regards,

    Alex.

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