Help me with M1/M2 spacing in the place and route stage

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Clunixchit

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M1/M2 spacing ?

Hello there,

In the place and route stage, I have to fill in the metal 1 spacing and metal 2 spacing. However I don't know how to deduce these values. I'm looking at its LEF file, but don't know at what I should be looking for. Can anyone please shed some light please ?
 

For signal routing, minimum space and width is ok. For the clock tree I would have tried 2x width and 2x space, but this is technology and design dependent.

If you have a routing kit you will probably have technology files, *.tf. You will find minimum width and spacing for M1 and M2 there.

Another tip is to look in the DRM, and find the minimum widths and spaces for M1 and M2.
 

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