balcony
Newbie level 2
umc psub
Hi everyone,
I am experiencing layout LVS problem with UMC momcaps array and hope if anyone has same experience. I am using UMC 90nm process.
first, the momcaps array is connected with ports on schematic view, with only single mom device. The the layout is generated automatically by layout XL. Then I connected pos, neg, nw and psub. Since the device has only showed 3 port (pos, neg, nwell) on the layout, the psub contact is added with substrate layer. The LVS failed with error report of unbound device and no DRC error.
Then I tried no port connection and a single device in layout, the error report show the same result.
So if anyone has experience on this, could you please give me some advice? I am just using MOM as decoupling cap and no accuracy requirements.
Thanks to all.
Hi everyone,
I am experiencing layout LVS problem with UMC momcaps array and hope if anyone has same experience. I am using UMC 90nm process.
first, the momcaps array is connected with ports on schematic view, with only single mom device. The the layout is generated automatically by layout XL. Then I connected pos, neg, nw and psub. Since the device has only showed 3 port (pos, neg, nwell) on the layout, the psub contact is added with substrate layer. The LVS failed with error report of unbound device and no DRC error.
Then I tried no port connection and a single device in layout, the error report show the same result.
So if anyone has experience on this, could you please give me some advice? I am just using MOM as decoupling cap and no accuracy requirements.
Thanks to all.