Nonvolatile memory device and operating method thereof

PURPOSE: A nonvolatile memory device and an operating method thereof are provided to derandomize the data randomized according to a cash-read command by using an address counter which increases the initial address. CONSTITUTION: A memory cell array(110) stores the M- bit data information. The memory cell array is classified into a plurality of domain frames. A page buffer circuit(120) reads data of the memory cell array the control circuit(150). A decoder circuit(130) selects the memory block of the memory cell array.