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X Y snap spacing for layout window (Read 2822 times)
mixed_signal
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X Y snap spacing for layout window
Mar 07th, 2016, 9:03am
 
Hi,
In display options form of Virtuoso layout window there are 2 entries X snap and Y snap. Which documents from foundry contain these information? Can anyone suggest me for TSMC 65nm?
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ULPAnalog
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Re: X Y snap spacing for layout window
Reply #1 - Mar 7th, 2016, 10:34am
 
Hello

This information is required to avoid off grid errors. Foundries can typically snap their mask dimensions to a certain scale. This will be part of the DRC rule manual and also you should find it in the rule deck.
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ULPAnalog
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Re: X Y snap spacing for layout window
Reply #2 - Mar 7th, 2016, 10:36am
 
Oh by the way, I think it is 5nm (0.005, when units are set to um in Virtuoso layout) for the process you have asked for.
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Jelena
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Re: X Y snap spacing for layout window
Reply #3 - Dec 6th, 2016, 11:47pm
 
You can always check it in your techfile by running a SKILL command in CIW:

Code:
techGetMfgGridResolution(techGetTechFile(geGetEditCellView())) 



(basically what it does is call the techfile and render the info for you if I understood correctly myself)
it should output a value in um
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