Reliability significant improvement of resistive switching memory by dynamic self-adaptive write method
Digest of Technical Papers - Symposium on VLSI Technology(2013)
Abstract
We propose and demonstrate a dynamic self-adaptive write method (DSWM) for the first time, which fixes the reliability problem that over-set or over-reset degrades ReRAM endurance and retention of tail bits significantly. The demonstration is carried out on a 128Kb test macro of AlOx/WO x bi-layer ReRAM fabricated based on 0.18μm standard logic Al interconnect. Results show that the mean value of endurance distribution is improved by 2 orders of magnitude from 105 to 107 and the optimized retention of 128Kb array including tail bits is 85°C @10yrs. The improvements are attributed to the decrease of Joule thermal damage by DSWM. © 2013 JSAP.
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Key words
endurance,reram,retention,self-adaptive,writing,reliability,electrodes,switches,resistance
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