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IBM_Research
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Re: Try real densities
IBM_Research   5/12/2014 11:15:30 AM
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IBM has been achieving industry-leading density and performance (speed) in our current high-end Flash product portfolio. If you would like to read some published papers please email me at cia at zurich.ibm.com

resistion
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Re: Try real densities
resistion   5/12/2014 11:14:09 AM
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Samsung showed 20 nm PCM at IEDM 2011 with substantial thermal crosstalk.

"PRAM cell technology and characterization in 20nm node size"

R_Colin_Johnson
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Re: Try real densities
R_Colin_Johnson   5/11/2014 8:28:57 PM
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How many shrinks will it take PCM assuming 90nm is the current state of affairs

The 90nm PCMs are two years old and Micron and several other research organizations have 45 nm in various stages of development, but to rival flash they'll need to get below 22 nm.


selinz
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Re: Try real densities
selinz   5/11/2014 12:15:06 PM
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Resistion, I recall from you many previous posts on this subject that you have a wealth of facts in your head. So here is an unreasonable, simple minded question... How many shrinks will it take PCM assuming 90nm is the current state of affairs in order to reach densities on par with today's flash?

resistion
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Try real densities
resistion   5/10/2014 12:06:54 AM
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I don't think anyone can get around the speed-density tradeoff. That's the trouble with dense arrays.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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