Wordline-to-Wordline Stress Configuration

Abstract

A method and system for performing wordline-to-wordline stress routines on a storage device is disclosed. Stress routines may be performed to reduce state widening in multi-level memory cells in the storage device. However, data retention problems may result if the stress routines are performed too often. In order to perform the stress routines at the proper times, a stress control variable is used. The stress control variable may be indicative of age of the storage device (such as the number of erase cycles performed on a memory block in the storage device). The stress control variable is input to a look-up table (or other logical construct), with the output of the look-up table indicating whether to perform the wordline-to-wordline stress routine. In this way, the stress routines may be performed to reduce state widening while reducing the ill effects of data retention.

Dependencies are inferred from the claim text.