NCC with body always failed

[Trung Khanh Lê]

Hello everyone,

I am new with Electric, I created an Inverter cell to learn CMOS layout with Electric 9.07 on my ubuntu. However, everytime I run  NCC to compare layout with schematic, it is always failed because of body check.

I understand that if I uncheck the body check in NCC option, this error is cleared. However, I would like to understand clearly the reason of error. I tried to export port, set wire name,... but still failed.

I hope someone can help me solve this issue.

I attach here the library I designed, it very simple lib.

Thank you very much.

Best regards.

[Steven Rubin]

If you insist on treating transistors as objects with "body" connections, then you must  wire them uniformly. Your layout does not use the body ports, but your schematic does.

Solution 1: connect the body ports of your transistors in the layout (something that is difficult to do, intentionally, so you must treat the body port as something that is "hard to connect").

Solution 2: replace the schematic transistors with the simpler ones that do not have a body port.

   -Steven Rubin

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[Trung Khanh Lê]

Thank you very for your help. However, I have just solved this issue.
I checked the manual again and it says "body port of the layout transistors are in the very center of the transistor and are "hard toselect"".
Then I have to use Ctrl+Left click to select that port.
Best regards.

Vào lúc 23:46:45 UTC+7 ngày Thứ Ba, 22 tháng 12, 2020, str...@staticfreesoft.com đã viết: