MEMORY SYSTEM AND CONTROL METHOD

Abstract

A memory system includes a plurality of memory cells and a controller. The controller is configured to acquire a data set corresponding to a distribution of threshold voltages of the plurality of memory cells by reading the plurality of memory cells using a reference read voltage; select one from a plurality of acquisition operations of acquiring an actual read voltage for reading data stored in the plurality of memory cells based on the data set, wherein the plurality of acquisition operations include a first acquisition operation of acquiring the actual read voltage from the data set using a first trained machine learning model and a second acquisition operation different from the first acquisition operation; and acquire the actual read voltage using the selected acquisition operation and read the plurality of memory cells using the acquired actual read voltage.

CPC Classifications