How to solve layout Minimum Density Area across chip / CHIP Area must be >= 14%

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Boki - 17 Sep 2003 06:54 GMT

Dear All:

When I using TSMC 0.35 2P4M process to layout, the DRC error report
these messages:

1. POLY Minimum Density Area across chip / CHIP Area must be >= XX%
2. M1 Minimum Density Area across chip / CHIP Area must be >= XX%
3. M2 Minimum Density Area across chip / CHIP Area must be >= XX%
4. M3 Minimum Density Area across chip / CHIP Area must be >= XX%
5. M4 Minimum Density Area across chip / CHIP Area must be >= XX%

But, in my layout design, I did't need these layers or area, could you
please give me some suggest?

Thanks!

Boki.

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Russell Powell - 23 Sep 2003 15:57 GMT

You did a design layout and used no Poly or metal?
I find that hard to believe, but if you say so, you turn off the
density checks or just ignore them. If you do have these layers,
you can add dummy poly or metal or alter the density checking window
size to get your design to pass.

> Dear All:
>
[quoted text clipped - 13 lines]
>
> Boki.

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Electronics Forum / CAD / September 2003

How to solve layout Minimum Density Area across chip / CHIP Area must be >= 14%