Offset voltage based operation method of memory system, data read method of memory and memory system

Abstract

The present disclosure provides an operation method of a memory system, a data read method of a memory, and a memory system. The operation method includes: first determining an offset voltage value corresponding to a selected word line of N word lines according to a number N of the N word lines and offset voltage information, wherein the N word lines are word lines adjacently disposed in a memory block of a memory, data is stored in K memory cells coupled with the N word lines, K and N are positive integers, and the offset voltage information is used for indicating the offset voltage value corresponding to N; and then sending a data read command to the memory, wherein the data read command is used for instructing the memory to generate a read voltage according to the offset voltage value and apply the read voltage to the selected word line.