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An adaptive ECC scheme for dynamic protection of NAND Flash memories
Yuan L(袁柳); Liu HD(刘怀达); Jia PG(贾品贵); Yang YP(杨一平)
2015
Conference Name2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Source Publication2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Pages1052 - 1055
Conference Date19-24 April 2015
Conference PlaceBrisbane, Australia
AbstractError correcting code (ECC) is an essential method in protection of NAND Flash memories. Complexity of it is increasing rapidly with the increment of error correction capability. Traditionally, the software implementation of ECC which has less cost and high flexibility is nearly ignored due to its inefficiency. This situation can be changed by design of faster software-based ECC scheme. We have found that the reliability is constantly changing with Program/Erase cycles and retention time during the lifetime of memories. However, regular ECC methods fail to take into account the variable kinds of reliability and result in a great waste of computations. In order to achieve better software implementation, an adaptive ECC scheme is proposed to provide various amount of protection. By assigning appropriate ECC, an adaptive ECC with Hamming and more efficient BCH codes is designed to provide corresponding protection. Proposed ECC scheme is suitable for diverse devices and applications. The coding time can be obviously decreased, making it possible to replace hardware methods with software methods. 
KeywordError Correcting Code Flash Memories Adaptive Protection Software Bch
Subject Area工科
DOI10.1109/ICASSP.2015.7178130
Indexed ByEI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://ir.ia.ac.cn/handle/173211/11454
Collection综合信息系统研究中心
Affiliation中国科学院自动化研究所
Recommended Citation
GB/T 7714
Yuan L,Liu HD,Jia PG,et al. An adaptive ECC scheme for dynamic protection of NAND Flash memories[C],2015:1052 - 1055.
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