PLiu@amlogic
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Hi there,
I am new to TSMC 40 nm process and I am just wondering what will a cell ring structure like. I have been working in TSMC 180 nm process before and I know a cell ring structure in TSMC 180 nm process is like below:
1. GSUB(P-ring) to surround the whole cell layout
2. DNW/NWELL (N-ring connected to DVSS ) to surround a half of the digital part of cell layout
3. DNW/NWELL (N-ring connected to AVSS) to surround a half of the analog part of cell layout
But I am unable to find the DNW/NWELL (N-ring) in TSMC 40 nm multipart selection list.
Thanks very much for your attention & time!
I am new to TSMC 40 nm process and I am just wondering what will a cell ring structure like. I have been working in TSMC 180 nm process before and I know a cell ring structure in TSMC 180 nm process is like below:
1. GSUB(P-ring) to surround the whole cell layout
2. DNW/NWELL (N-ring connected to DVSS ) to surround a half of the digital part of cell layout
3. DNW/NWELL (N-ring connected to AVSS) to surround a half of the analog part of cell layout
But I am unable to find the DNW/NWELL (N-ring) in TSMC 40 nm multipart selection list.
Thanks very much for your attention & time!