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| Content Provider | ACM Digital Library |
|---|---|
| Author | Haratsch, Erich F. Cai, Yu Mutlu, Onur Mai, Ken |
| Abstract | As NAND flash memory manufacturers scale down to smaller process technology nodes and store more bits per cell, reliability and endurance of flash memory reduce. Wear-leveling and error correction coding can improve both reliability and endurance, but finding effective algorithms requires a strong understanding of flash memory error patterns. To enable such understanding, we have designed and implemented a framework for fast and accurate characterization of flash memory throughout its lifetime. This paper examines the complex flash errors that occur at 30-40nm flash technologies. We demonstrate distinct error patterns, such as cycle-dependency, location-dependency and value-dependency, for various types of flash operations. We analyze the discovered error patterns and explain why they exist from a circuit and device standpoint. Our hope is that the understanding developed from this characterization serves as a building block for new error tolerance algorithms for flash memory. |
| Starting Page | 521 |
| Ending Page | 526 |
| Page Count | 6 |
| File Format | |
| ISBN | 9783981080186 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2012-03-12 |
| Publisher Place | San Jose |
| Access Restriction | Subscribed |
| Subject Keyword | Nand flash Error patterns Endurance Error correction Reliability |
| Content Type | Text |
| Resource Type | Article |
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