Charge loss activation during non-volatiles memory data retention

Abstract

In this paper we develop a method to study and to activate charge loss in a Non-volatile Memories array. We first detail an original date retention test under gate stress on a simple and statistical tool. Then we present the experimental results we obtained after more than 700h at 85°C and 150°C, for six different gate stress conditions. Finally, we extract the activation energy for the observed charge losses, using to different approaches, leading to a discussion on the extracted values and to perspectives for this work.