A multilevel analog storage memory using source-side injection flash array
Chun-Mai Liu, James Brennan, Ping Guo, P. Holzmann, P. Klinger, Albert Victor Kordesch, Ming Kwan, I-Sheng Liu, Ken Su, Chih-Hsin Wang, Hai Wang, Sukyoon Yoon · 2003
A multilevel storage technology with resolution approaching 8-bits is developed for storing analog signals directly into a memory array of source-side injection flash EEPROM. This is achieved by devising a read and programming scheme, by optimizing a memory cell layout, and by integrating mixed-mode capabilities into the base digital flash process.