NONVOLATILE MEMORY DEVICE, MEMORY CONTROLLER, OPERATION METHODS THEREOF, OPERATION METHOD OF MEMORY SYSTEM, AND WEAR-LEVELING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a nonvolatile memory device, a memory controller, an operation methods thereof, an operation method of a memory system, and a wear-leveling method, in which deterioration of a memory cell can be accurately detected.SOLUTION: An operation method of a non-volatile memory device of the present invention comprises steps of: receiving a block address and an erase command output from a controller; changing, until an erase operation performed according to the erase command is completed on a block corresponding to the block address, a parameter value related to the erase operation; storing information corresponding to a finally changed parameter value; and transmitting the information to the controller according to a command output from the controller.