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  3. Checking installation of PDK is correct

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Checking installation of PDK is correct

CxD7
CxD7 over 7 years ago

We are changing manufacturer from MOSIS to Europractice, so I changed my TSMC N65 pdk provided by mosis to the equivalent pdk provided by europractice. Since the installation process has several options, and I am not the one who installed the PDK from Mosis, I want to test the newly installed pdk to make sure it is the SAME as the PDK I use before. I test the pdk by using ADE simulator for the same schematic, and same settings except in model libraries, I change the model files, and simulate for both new pdk model files and the old pdk model files. If I install the same PDK, I expect the simulation results should be the same. However, I find that the simulation results were different.

Since I am still relatively new, I would like to verify if my test for checking if I installed the same pdk valid? I.e. is the only thing that I need to change to compare simulation of the pdks the model libraries? Note, I also ran DRC and LVS on layout after changing pdk, using the new pdk's calibre.drc and calibre.lvs rules, and they are still clean.

Since simulation results are different, my guess now is that I changes some setting in the installation process? Does that seem like a reasonable assumption? I contacted tsmc support about installation, but I would like to verify that my testing of the installed pdk makes sense

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  • Andrew Beckett
    Andrew Beckett over 7 years ago

    First I'd suggest you look at the version of the models - typically you'll see at the top of the model file comments with the document number and version number. I'm a bit surprised that the difference would be significant for a mature process like this - but you'd be better off asking Europractice rather than here.

    Andrew.

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  • CxD7
    CxD7 over 7 years ago in reply to Andrew Beckett

    Fixed! Your suggestion was very helpful. I find the old pdk was GP from reading the model file comment, and the new one is LP. After installing correct version, it is fixed

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