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floating metal check in layout

hello experts,

is there some LVS/DRC/ERC checking that we can identify floating metals which doesn't connect to any pins nor devices? looks like ERC only checking floating devices but not the metal itself.

thanks,

David

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Andrew Beckett over 5 years ago

Which tool are you using?
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Andrew Beckett over 5 years ago

Which tool are you using?
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DavidLou over 5 years ago in reply to Andrew Beckett

hi Andrew,

ops, sorry forgot to mention, it's for TSMC 0.18um process. I did check both Calibire and Assura LVS runsets and I could only see Floating Gate or Floating Well kind check. I couldn't find Floating Metal kind check from there. so I assume it's the same thing either I'm using Calibre or Assura (I'm using Calibre).

i.e.,, this looks like a runset code thing for LVS/ERC, right?

thanks,

David
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Andrew Beckett over 5 years ago in reply to DavidLou

Hi David,

Yes, it's probably a limitation of the runset. You can check this article - that should hopefully point in the right direction: How to check floating metal geometries in Assura.

Obviously I can't really advise on Calibre since it's a Mentor tool that I don't have access to. I'm sure it must have a similar capability though.

Regards,

Andrew.
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DavidLou over 5 years ago in reply to Andrew Beckett

that's great. thanks Andrew
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