Comprehensive study of a new self-convergent programming scheme for split gate flash memory

A new sell-convergent constant current programming achieved by a ramp-up so urce voltage is extensively studied in this work. Based on the results of a constant programming current and self-convergent characteristics, several methods are presented to achieve accurate control. of multiple programmed s tates, Both efficient programming speed and excellent reliability are demon strated. The proposed programming technique is considered to be a promising candidate for high-speed, high-density, and low-power multilevel split gat e flash memory.