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krisi
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re: Analyst: UMC 28-nm roll out beating expectations
krisi   2/13/2012 6:35:31 PM
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Isn't high-k dieletcric is only needed for gate leakage? Most of the leakage is between source and drain so the total leakage is not that much different pressumably...Kris

PV-Geek
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re: Analyst: UMC 28-nm roll out beating expectations
PV-Geek   2/12/2012 2:17:38 AM
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Not doing the HKMG certainly makes things easier. If there are a good number of customers that can live with the leakage then this could be good money for UMC. It all depends on how much volume they can get.

yalanand
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re: Analyst: UMC 28-nm roll out beating expectations
yalanand   2/11/2012 11:41:10 AM
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Interesting to note that UMC had "smoother-than-expected R&D and pilot run," is it because it took precaution while building its 28nm process or was it plain lucky ? I am sure it would have learnt some lessons from TSMC/GF's mistakes when implementing 28nm process.

chipmonk0
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re: Analyst: UMC 28-nm roll out beating expectations
chipmonk0   2/10/2012 7:11:54 PM
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Does TI not care about the leakage / power dissipation for their OMAP built by UMC with ye olde polysilicon/silicon oxynitride gate stack rather than HKMG like TSMC / GloFo would have at 28 nm LP ? Perhaps this is just a stop gap / get a foot in the door for a OEM ( A?) who can't wait till UMC gets its HKMG ready at 28 nm.

Fab guy
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re: Analyst: UMC 28-nm roll out beating expectations
Fab guy   2/10/2012 3:56:35 AM
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Well, their 28nm is a conventional gate stack process (poly Si gate with SiON gate oxide) and a far more sophisticated high-k dielectric and metal gate process which is the main stream for TSMC and Intel, IBM.

mcgrathdylan
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re: Analyst: UMC 28-nm roll out beating expectations
mcgrathdylan   2/10/2012 1:29:17 AM
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It's quite interesting that UMC seems to be ahead of schedule at 28-nm when it apparently caused TSMC and GF a lot of headaches.



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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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