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Genusion licenses B4-Flash to Rohm, Lapis

2/23/2012 04:43 PM EST
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lwang61
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re: Genusion licenses B4-Flash to Rohm, Lapis
lwang61   3/6/2012 2:22:37 AM
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As I know, B4 is a P-type device associated with Band-to-Band operations. The flash reliability is more associated with process technology and methods of program/erase not the cell size. 10~8F2 cell is typical for NOR type flash cell sizes.

anon0087490
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re: Genusion licenses B4-Flash to Rohm, Lapis
anon0087490   2/29/2012 2:23:53 AM
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I am not from B4 company. But I was a flash memory designer. The read speed is the most easy part to solve. Just partition a big array into several partition will improve it. Of course, you pay costs. Reliability is most difficult part. 20 years 125C after 10K cycles is very amazing. It can not be done just simple by circuitry. The most NOR flash parts you can buy from market may guarantee you 100K cycles and 10years. But what you can ask is "100K cycles after 10 years, or 100K cycles only, or 10years only. " It is very tricky. You can ask the sales guys to provide you the experiment data that show they can do it. Then you will know what I mean. For the NAND flash. They are even worse. They are not hesitate to write the poor reliability information on the data sheet because of the low price per bit. I think B4 pay 8F2 area cost to buy the reliability. In some applications, reliability is a big issue. That's why Rohm willing to pay for it.

Neo10
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re: Genusion licenses B4-Flash to Rohm, Lapis
Neo10   2/24/2012 2:47:44 AM
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10k cycles are not much for a consumer elctronic device and they don't mention the more important read spedds.

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