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  1. #1
    Newbie level 1
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    The issue of Assura LVS

    Hi,

    For the schematic, use a 5V pmos & nmos device with a parasitic diode. However, when layout, the sub-block uses a basic 5V device with no parasitic diode, because it shares the guard ring at the top level with other blocks. Is there a way to complete the LVS without drawing the guard ring on the sub-block when LVS verifying the sub-blocks?

    Verify Tool: Assura

    Thanks.

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  2. #2
    Full Member level 3
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    Re: The issue of Assura LVS

    Do you need a complete guard ring for LVS or just a nwell/pwell tie?



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