Why are N-well, P-well and power continuity required ?
Hi,
Filler cells are added for n well, pwell and metal 1 continuity. Why should n well p well be continuous ? I understand that Metal 1 should be continuous for min density reasons and EM reasons.
Two reasons. Without continuity, the design rules would probably mean you would need to space things further apart. Also, the wells need to be tied to VDD/VSS. If they're continuous, you need less well ties.