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Standard Cell Site, Placement Grid and Unit Tile

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Anjali0

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Can any one point out the difference between Standard Cell Site, Placement Grid and Unit Tile...??

All these r same or different...??

I got a definition: "The minimum Width and Height a cell that can occupy in the design"

But this definition will suite for which one???
 
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A Placement Grid is nothing but the boundary of the cell, which gets abutted during PNR.
A routing grid is the one where the pin/via placement are done.
In case of Zero offset, both are same .

I am not aware of Standard cell Site and Unit Tile

:)
 

Standard Cell Site & Unit Tile: is the minimum width of the small largest cell, generally the smallest filler. The terminology difference could comes from different backend tool (Astro-ICC versus SE-SOCEncounter).
Placement grid: the grid is generated by the backend tool based on the unit tile.
 

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