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Politics : Formerly About Advanced Micro Devices
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To: Ritz who wrote (44869)1/5/1999 1:01:00 PM
From: Yousef  Read Replies (1) of 1571810
 
Ritz,

Re: "Motorola is now doing the process development work for AMD at 18. How
much of an impact would the 2 different equipment sets ..."

Ritz, This is a very good and important question to answer ... As you
probably know, Intel has a process transfer methodology called "copy exactly".
You can better understand the benefits by seeing Bob Gasser's IEDM paper
from the December '98 conference. My experience has shown that using
the same equipment makes the process transfer much, much smoother. Process
recipes transfer directly and first silicon will much more closely match
the "sending" Fab's results. I believe that AMD has experience transferring
their .35um process (from: Sunnyvale ... to: Austin) without using the same
equipment. The results showed that process integration problems caused
low yield that took almost 1 year to resolve. Transferring a .18um process
to a different equipment set is too high a risk to off-set any advantage
of using your own "preferred" equipment.

Make It So,
Yousef
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