Nonvolatile memory device, method of operating nonvolatile memory device and storage device including the same

Abstract

Nonvolatile memory device includes a memory cell array and a control circuit. The memory cell array includes a plurality of memory blocks, the memory blocks including a plurality of memory cells coupled to word-lines respectively, the word-lines are stacked vertically on a substrate, and some memory cells of the plurality of memory cells are selected by sub-block unit smaller than one memory block. The control circuit divides sub-blocks of a first memory block into at least one bad sub-block and at least one normal sub-block based on error occurrence frequency of each of the sub-blocks, and applies different program/erase cycles to the at least one bad sub-block and the at least one normal sub-block based on a command and an address provided from external to the nonvolatile memory device. The at least one bad sub-block and the at least one normal sub-block are adjacent each other.