Difference between revisions of "Tips for good layout"
From Vlsiwiki
(New page: # Keep your cells a fixed height to aid power/ground routing. # Keep poly as SHORT as possible. Keep poly SIMPLE (i.e. no bends). # Use extra contacts/vias if there is space. # Add ntap/pt...) |
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# Add ntap/ptap cells to most cells (we seem to need it for LVS to work...). | # Add ntap/ptap cells to most cells (we seem to need it for LVS to work...). | ||
# M1 is "mostly" horizontal, M2 vertical, M3 horizontal, etc. | # M1 is "mostly" horizontal, M2 vertical, M3 horizontal, etc. | ||
| + | # Minimize all metal, diffusion, poly area as this just adds extra capacitance. | ||
| + | # Don't use metal 2 in cells unless you must... | ||
Latest revision as of 03:52, 3 October 2007
- Keep your cells a fixed height to aid power/ground routing.
- Keep poly as SHORT as possible. Keep poly SIMPLE (i.e. no bends).
- Use extra contacts/vias if there is space.
- Add ntap/ptap cells to most cells (we seem to need it for LVS to work...).
- M1 is "mostly" horizontal, M2 vertical, M3 horizontal, etc.
- Minimize all metal, diffusion, poly area as this just adds extra capacitance.
- Don't use metal 2 in cells unless you must...
