What are filler cells?

xialishui1987 · 发表于 2014-3-7 10:47:48

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本帖最后由 xialishui1987 于 2014-3-7 10:49 编辑

Filler cells are just cells which do nothing..

If any changes are required in the layout after the whole layout process is complete(say u encounter a hardware bug), one can remove the filler cells and place actual logic instead of that.

Typical use is when ECOs occur in the design.

xialishui1987 · 发表于 2014-3-7 10:52:25

回复 1# xialishui1987
FIller Cell are empty Cells with only Power and Ground Rails. After Place and Route there will be enpty areas left in the row and hence the power will not reach all the cells due this discontinuity. After adding filler cells this discontinuity will go away. Also few people make use of filler cell for increasing the metal density and poly density by using the empty space in filler Cell.

david1121 · 发表于 2014-3-7 11:01:36

filler cells also have two types : with cap or not. please add the cap first

xialishui1987 · 发表于 2014-3-9 20:27:06

回复 3# david1121

thx,i have google the detailed info here http://asic.ams.com/hitkit/hk410/edi/flow.html

gnoc · 发表于 2014-3-10 09:52:51

E文交流综合征~ 哈哈，

xialishui1987 · 发表于 2014-3-12 09:10:37

回复 5# gnoc
thx for focus, hei hei...

brunocortona · 发表于 2015-12-10 08:09:01

it is very hard question

[原创] What are filler cells?

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