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cmos fabrication (layouts)

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aishu.r

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hi,

I too have a similar question. Anyone please help.

Why do we have nwell at n-substrate? if it is for reducing leakages, we have pselect there. then whats the need for nwell.

please tell me in detail. i am getting confused.
 

As far as i know.. We can use both nwell n pwell. But when we are working on TSMC, we go for nwell. What is the exact purpose of using nwell.

Please answer my question.
 

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