IO perc 跑出来有LUP.1.0.1U,LUP.2.0.1U,LUP9U

djim2002

IO perc 跑出来有LUP.1.0.1U,LUP.2.0.1U,LUP9U 的drc，
t12的工艺，IO是它自带的。它的意思是说N+或P+ guang ring 没接地或者VDD。我就奇怪，我已经在bump上定义了VDD,VSS,VDDPST,VSSPST这些，理论上来说VDD,VSS和这些gurad ring已经自动连起来了啊，怎么还报这些错。

LoktikVJ

these errors appear when you define power and ground port names in DRC setup.

djim2002

LoktikVJ 发表于 2023-6-23 03:50
these errors appear when you define power and ground port names in DRC setup.

我觉得应该不是这个问题，我已经设置正确了

LoktikVJ

IO, typically, has multiple ports with same name, not all structures has connections by metals (breaks according to tools), all structures will be connected in full ring IO+power PADs. For clear DRC you need to connect all ports by RING PADs or by metals.

djim2002

LoktikVJ 发表于 2023-6-23 20:51
IO, typically, has multiple ports with same name, not all structures has connections by metals (brea ...

所有的最高层的port 跟AP相交的地方都打上了RV，但是结果还是一样

shantushuiyan

perc本质上还是基于网表在做检查，power/ground是从网表中提取的，怀疑很大程度上和lvs connection rule有关系

binnq

感谢