The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Other CAD Tools >> Physical Verification, Extraction and Analysis >> X Y snap spacing for layout window
https://designers-guide.org/forum/YaBB.pl?num=1457370206

Message started by mixed_signal on Mar 7^th, 2016, 9:03am

Title: X Y snap spacing for layout window
Post by mixed_signal on Mar 7^th, 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?

Title: Re: X Y snap spacing for layout window
Post by ULPAnalog on Mar 7^th, 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.

Title: Re: X Y snap spacing for layout window
Post by ULPAnalog on Mar 7^th, 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.

Title: Re: X Y snap spacing for layout window
Post by Jelena on Dec 6^th, 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