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diiference between technology file and interconnect technology file

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Anjali0

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Difference between Technology file and Interconnect Technology file

Hi,

Can I get a clarity on the files, Technology file (tech.lef) and Interconnect Technology file (ict or ptf or itf).

When I open them I saw the Metal Layer details in both files.

Interconnect Technology file is having mostly Resistance and Capacitance values of Metal Layers.

Technology file is is also having a similar Metal Layers details.

But my doubt is what is the actual difference and the actual need of both files for the ASIC Physical Design.

Why we need both files for ASIC Physical Design?

Why a not single file for Metal Layer details?


A good explanation will be appreciated.
 
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