Energy-aware error control coding for Flash memories

14 years 23 days ago
Energy-aware error control coding for Flash memories
The use of Flash memories in portable embedded systems is ever increasing. This is because of the multi-level storage capability that makes them excellent candidates for high density memory devices. However, cost of writing or programming Flash memories is an order of magnitude higher than traditional memories. In this paper, we design an algorithm to reduce both average write energy and latency in Flash memories. We achieve this by reducing the number of expensive `01' and `10' bit-patterns during error control coding. We show that the algorithm does not change the error correction capability and moreover improves endurance. Simulations results on representative bit-stream traces show that the use of the proposed algorithm saves, on average, 33% of write energy and 31% of latency of Intel MLC NOR Flash memory, and improves the endurance by 24%. Categories and Subject Descriptors B.3.2 [Memory Structures]: Mass storage; C.4 [Performance of Systems]: Fault tolerance General T...
Veera Papirla, Chaitali Chakrabarti
Added 12 Nov 2009
Updated 12 Nov 2009
Type Conference
Year 2009
Where DAC
Authors Veera Papirla, Chaitali Chakrabarti
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