Formerly About Advanced Micro Devices Message Board

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Politics : Formerly About Advanced Micro Devices

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To: kash johal who wrote (47333)	1/25/1999 10:47:00 PM
From: Yousef	Read Replies (1) of 1571427

Kash, Re: "Pentium ID flash ... Yousef, would welcome your thoughts ... A "bi-partisan" factual answer would be appreciated." Kash, I will give you my thoughts and experience at .25um ... First, the FET's in Intel's .25um process were designed (implants, thermal cycles , gate thickness, gate length ...) to provide high drive currents at 1.8V +- 10%. I don't believe that there are any additional processing steps (extra poly, thicker oxides, other furnace steps ...) to incorporate a "flash" memory capability. The additional thermal cycles would "de-optimize" the FET's. However, Intel's .25um process does have poly "fuse" structures that can be agglomorated (change to high resistance) electrically at test. Thus an ID could be programmed into some type of poly fuse structure. This is my best guess ... Hope this helps. Make it So, Yousef

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