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Macro Placement Tips
The formula to calculate spacing between two macro is (width+spacing x number of pins /vertical routing layers) + spacing. It is better adding an additional spacing because you can avoid violation with the side of macros.

1. Place macros around chip periphery.
2. Consider connections to fixed cells when placing macros.
3. Orient macros to minimize distance between pins.
4. Reserve enough room around macros.
5. Reduce open fields as much as possible.
6. Reserve space for power grid.


Macro(Memory) placement rules implementation hands on using cadence Innovus (Encounter soc).
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