The reliability of multilevel analog memory in a voice storage and playback system using source-side injection flash
Albert Victor Kordesch, S.V. Awsare, James Brennan, Ping Guo, M. Hemming, M. Herman, P. Holzmann, EK Ng, Chun-Mai Liu, Ken Su, Chih-Hsin Wang, Mingyue Wu · 2003
The reliability of a multilevel analog memory is mainly determined by data retention, cycling endurance, and read and write disturb. This storage system retains a voice message for 10 years and can record continuously for 50 K cycles. It can tolerate up to 300 single cell retention shifts >50 mV and still meet THD32 dB.