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  3. Nodeset for subcircuit

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Nodeset for subcircuit

titanic
titanic over 13 years ago

 Hi,

For cadence analog design envirenment i built 32x32 memory array. I want to nodeset the sram latch.

If i use simulation -> convergence aids -> nodeset , i am gonna have to nodeset every instance of the 6T memory cell.


How can i nodeset subcircuit so that , every instance obeys that nodeset arrangement ..?


(i.e. making nodeset as a property of 6T sram subcircuit for simulation by default)

thanx in advance

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  • Quek
    Quek over 13 years ago

    Hi titanic

    You can try the following:

    a. Create a file named "nodeset.sp" with the following lines:

    simulator lang=spice
    .nodeset v(net123)=456 subckt=latch

    where "net123" is a net inside the latch subckt and "456" is the desired voltage.

    b. Add the file as one of the model files in "Setup->Model Libraries"


    Best regards
    Quek

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  • Andrew Beckett
    Andrew Beckett over 13 years ago

    You can also use wildcards in the nodeset statement (in spectre syntax).

    Regards,

    Andrew.

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