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clock Created with Sketch. 07/11/21
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Originally posted by Darkstone:
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For what it is worth, this is what I am guessing occurred. A certain Dr that is now not employed screwed up the etch. It was probably something painfully simple and when they first looked at it they thought it was an easy fix. Then they looked at it again and realized they were going to have to redo the etches, which immediately imposed a significant delay and took them beyond the current IMEC agreement - hence the need to renegotiate. Simultaneously they had these great numbers from the fully crystaline PCMO and when WD looked at it they indicated they wanted that improved performance. So then the other Dr's thought, if we are going to have to redo the etches to fix the stuff up from the other Dr, we may as well go to the fully crystaline PCMO, but there is a bunch of stuff we are going to have to tweak to get this right and it is going to have to go through a whole new simulator road trip which will take a few weeks, and then more weeks to make the etches. Oh crap. Meanwhile the conditions under which they have to test the non-platform lots don't allow them to properly limit current fluctuations and they need the Imec controller to know whether the endurance reduction is a feature of the test environment or a consequence of the fully crystaline PCMO - which is why they didn't go that way in the first place.
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hey Darkstone
(20min delay)