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Tom Murphy
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Re: Phase Change memory (PCM) not a runner?
Tom Murphy   7/18/2013 9:13:48 PM
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Ron:  Thanks for the background.  I think you've nailed it down conclusively.

Ron Neale
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Re: Phase Change memory (PCM) not a runner?
Ron Neale   7/16/2013 6:18:45 AM
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Tom, it is interesting that the subjects of the papers presented at the recent NV Workshop 2013, Monterey, CA, exactly match and reflect Doug Wong and Toshiba's views, with the same three front runners. The breakdown was as follows:-Flash 42.5%, ReRAM 30%, MRAM 12%, PCM 5%, CbRAM 5%, FeRAM 2.5% and memory architecture 2.5%. I included a graphical anaysis of this in the conclusion of Part 2 of my paper on IBM's latest MLC-PCM results. Part 1 of which you will find in EETimes memory section. Always remember the real picture of the future of NV memory is made from many "bits" of "multi-level" and "multi-dimensional" information.

resistion
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Re: Coming Soon, in 3D!
resistion   7/15/2013 7:57:58 PM
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The 3D NAND is multiple layers on same piece of silicon sharing same charge trapping layer. Of course under Coulomb repulsion, the charges may hop to next location, so retention still needs improvement.

Tom Murphy
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Re: Phase Change memory (PCM) non a runner?
Tom Murphy   7/15/2013 7:23:14 PM
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Ron:  I'd be surprised if Toshiba is ruling those out. My take was that, in this limited space, Wong didn't get to go into everything on the drawing board.  But, yes, I'd be interested in hearing his take on those, too.

Ron Neale
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Phase Change memory (PCM) non a runner?
Ron Neale   7/15/2013 6:46:07 PM
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Doug Wong and Toshiba have 3D-NAND and ReRAM as their non-volatile (NV) memory front runners with MRAM also in the race, with respect to the potential to meet future scaling and write/erase endurance requirements. It would be nice to have heard Doug Wong's considered technical view of why phase-change memory (PCM), ferroelectric FeRAM and CbRAM are not on his or Toshiba's memory list. Should the omission of those latter three technologies from his answers be interpreted as a view that those technologies do not have the potential to scale or meet endurance requirements, or are their other technical reasons why they are not on the list?

Tom Murphy
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Coming Soon, in 3D!
Tom Murphy   7/15/2013 3:12:22 PM
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The idea of 3D NAND is truly exciting in its potential to blow current performance levels out of the water. I'd be really interested to hear how it would be manufactured, and whether such memory would be, essentially, a cube of current 2D displays, or perhaps in a different shape -- it could be spherical, for example, if that would offer any performance enhancement.  Does anyone know the answer to either question?

resistion
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MRAM
resistion   7/14/2013 11:06:15 PM
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Interesting that Toshiba is looking at MRAM. Write endurance is easy to sell, but read endurance is not trivial.



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