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Layout and LVS of a non-standard device!

Ueue

Hi,

I'm currently trying to draw the layout of a device not present in the library of my technology. So, I think to create a symbol to put in the schematic of my circuit and after to draw the complete layout.

When I will finish the layout, what can I do to execute the LVS?

I think the LVS will not recognize the new device. Someone suggested me to add a lot of labels in my circuit near to the non-standard devices.

Is it a good idea?

Are there other more efficient method to execute the LVS of circuit with non-standard devices?

Parents

  • Hi Stefano,

    If the device does not get recognized by the LVS rules, then I think your best bet (if you don't want to code the recognition into the rule deck - which would be worth it if you're using them a lot) would be to use a black box approach.

    Relying on labelling nets around the device is risky - for a start, it's hard to guarantee that the mismatch of this device would only cause a localized problem - it could cause a bigger mismatch (this is very dependent on the LVS tool you're using). Also, it makes it much hard to distinguish between real errors and intentional errors such as this.

    So I refer you back to the suggestions I made in my previous reply.

    Regards,

    Andrew.

Reply

  • Hi Stefano,

    If the device does not get recognized by the LVS rules, then I think your best bet (if you don't want to code the recognition into the rule deck - which would be worth it if you're using them a lot) would be to use a black box approach.

    Relying on labelling nets around the device is risky - for a start, it's hard to guarantee that the mismatch of this device would only cause a localized problem - it could cause a bigger mismatch (this is very dependent on the LVS tool you're using). Also, it makes it much hard to distinguish between real errors and intentional errors such as this.

    So I refer you back to the suggestions I made in my previous reply.

    Regards,

    Andrew.

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