An adaptive ECC scheme for dynamic protection of NAND Flash memories

doi:10.1109/ICASSP.2015.7178130

CORC > 自动化研究所 > 中国科学院自动化研究所 > 综合信息系统研究中心

	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
会议日期	19-24 April 2015
会议地点	Brisbane, Australia
关键词	Error Correcting Code Flash Memories Adaptive Protection Software Bch
DOI	10.1109/ICASSP.2015.7178130
页码	1052 - 1055
英文摘要	Error 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.
会议录	2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
学科主题	工科
语种	英语
内容类型	会议论文
源URL	[http://ir.ia.ac.cn/handle/173211/11454]
专题	自动化研究所_综合信息系统研究中心
作者单位	中国科学院自动化研究所
推荐引用方式 GB/T 7714	Yuan L,Liu HD,Jia PG,et al. An adaptive ECC scheme for dynamic protection of NAND Flash memories[C]. 见:. Brisbane, Australia. 19-24 April 2015.