Authors : Syed Mohsin Abbas, Soonyoung Lee, Sanghyeon Baeg,
and Sungju Park
Title : An Efficient Multiple Cell Upsets Tolerant Content-Addressable
Appears in : Accepted for publication in IEEE Trans. on Computers
Abstract—Multiple cell upsets (MCUs) become more and more problematic as the size of technology reaches or goes below 65
nm. The percentage of MCUs is reported significantly larger than that of single cell upsets (SCUs) in 20nm technology. In SRAM
and DRAM, MCUs are tackled by incorporating single-error correcting double-error detecting (SEC-DED) code and interleaved
data columns. However, in content-addressable memory (CAM), column interleaving is not practically possible. A novel error
correction code (ECC) scheme is proposed in this paper that will cater for ever-increasing MCUs. This work demonstrated that
m parity bits are sufficient to cater for up to m-bit MCUs, with an understanding of the physical grouping of MCUs. The results
showed that the proposed scheme requires 85% fewer parity bits compared to traditional Hamming distance based schemes.
Congrats Mohsin !!!