Aug 4, 2010 #1 O owen_li Full Member level 3 Joined Jul 22, 2007 Messages 150 Helped 17 Reputation 34 Reaction score 15 Trophy points 1,298 Activity points 2,301 Hi what is the use of tap cells ? Does every chip need to insert these tap cells before P&R ? Thanks!
Hi what is the use of tap cells ? Does every chip need to insert these tap cells before P&R ? Thanks!
Aug 7, 2010 #2 J jbeniston Advanced Member level 1 Joined May 5, 2005 Messages 460 Helped 106 Reputation 214 Reaction score 73 Trophy points 1,308 Activity points 3,494 They are used to tie the nwell to vdd and the substrate to vss. Whether they are needed depends on the cell library you are using. Some libraries have the ties in side all cells, so you don't need separate cells.
They are used to tie the nwell to vdd and the substrate to vss. Whether they are needed depends on the cell library you are using. Some libraries have the ties in side all cells, so you don't need separate cells.
Aug 11, 2010 #3 K kumar_eee Advanced Member level 3 Joined Sep 22, 2004 Messages 814 Helped 139 Reputation 276 Reaction score 113 Trophy points 1,323 Location Bangalore,India Activity points 4,677 We use them to remove the Latchup errors.