METHOD OF OPERATING NON-VOLATILE MEMORY DEVICES

摘要

PURPOSE: A method for operating a nonvolatile memory device is provided to reduce copyback program time by programming the randomized data in a target region of a memory cell array after the randomized data is simultaneously derandomized and randomized. CONSTITUTION: First random data randomized based on first random sequence data is sensed in a source region of a memory cell array(S110). Third random sequence data generated based on the first random sequence data and second random sequence data is loaded in a page buffer circuit(S120). The first random sequence data and the third random sequence data sensed in the page buffer circuit are logically operated(S130). Second random data is programmed in a target region of the memory cell array(S140). [Reference numerals] (AA) Start; (BB) End; (S110) Sense a first random data randomized based on first random sequence data in a source region of a memory cell array; (S120) Load third random sequence data generated based on the first random sequence data and second random sequence data in a page buffer circuit; (S130) Logically operate the data sensed in the page buffer circuit and the third random sequence data; (S140) Program second random data in a target region of the memory cell array through logic operation