NAND makers detail sub-20nm memory

Posted on Thursday, Feb 23 2012 @ 19:05 CET by Thomas De Maesschalck
EE Times reports Samsung, Toshiba and SanDisk engineers revealed details on their 19nm technology at the International Solid-State Circuit Conference (ISSCC) on Wednesday. You can read all the details over here.
Samsung's Daeyeal Lee delivered a paper describing the company's 64-Gbit multi-level cell (MLC) NAND device implemented in sub-20-nm technology. The device features a 533-megabit-per-second DDR interface achieved by implementing a wave-pipeline architecture, Lee said. The chip also makes use of new techniques to overcome floating-gate coupling interference and mitigate program disturbance, Lee said.

According to Lee, the use of the new schemes, known as correction-before-recoupling reprogram and P3 pattern pre-pulse scheme, results in a 21 percent lower bit error rate compared with conventional techniques. Lee described another technique, inhibit-channel-coupling-reduction, for mitigating program disturbance in the chip.

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Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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