Nonvolatile memory system, storage device and method for operating nonvolatile memory device

摘要

A nonvolatile memory device includes a data generating unit for generating a first reference value randomly or pseudo-randomly according to a first program request to program data in a memory cell, a seed selecting unit for selecting at least one of a plurality of seeds using the first reference value, and a randomizer for generating randomized data by using the selected seed. The data generating unit regenerates the first reference value as a second reference value different from the first reference value when a second program request is made, and the seed selecting unit selects another seed using the second reference value.

主权项

1. A memory system, comprising:
a vertical NAND memory, comprising a plurality of memory blocks, each of the memory blocks comprises a plurality of memory cells, wherein the memory blocks have three-dimensional (3D) structure in which the memory cells are stacked on a substrate in a vertical direction; and a memory controller coupled to the vertical NAND memory, comprising:
a data generating unit for generating a first reference value randomly or pseudo-randomly according to a first program request to program data in the memory cell;a seed selecting unit for selecting at least one of a plurality of seeds using the first reference value; anda randomizer for generating randomized data by using the selected seed, wherein the data generating unit generates a second reference value different from the first reference value when a second program request is made, and the seed selecting unit selects another seed using the second reference value.