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IHP-GmbH / IHP-Open-PDK

130nm BiCMOS Open Source PDK, dedicated for Analog, Mixed Signal and RF Design
Apache License 2.0
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KLayout: PMOS and NMOS have different GatPoly Layers #54

Open vkrahul77 opened 2 months ago

vkrahul77 commented 2 months ago

In the "IHP Pycells", For Gate The PMOS has "GatPloy.lbl" while NMOS has "Gatpoly.drw" as shown: GatePloy_PMOS_NMOS

Also, I've noticed a discrepancy in dimension input between NMOS and PMOS transistors within the tool. Specifically, while "1u" notation is accepted for PMOS, it's not permitted for NMOS. Instead, we're required to use scientific notation such as "1e-6".

ihpopenpdk commented 2 months ago

it seems to be an issue in both nmos and pmos cells - there should be no any '.lbl' or '.bnd' GatPoly layers, only '.drw' and '.pin'.. Thank you for finding!

vkrahul77 commented 2 months ago

Along with the posted bug, I noticed that there are a few DRC errors in NMOS-Cell. Here is a list: Min and Max size of contact should be 0.16 --> Cell has 0.14 Min Contact space should be 0.18 --> Cell has 0.16 Min Metal1 space or notch should be 0.18 --> Cell has 0.13

image
sergeiandreyev commented 4 hours ago

@vkrahul77 , I believe all these issues are fixed in the latest OpenPDK dev branch: image