Nonvolatile memory device, operating method thereof, and data storage apparatus including the same

An operating method of a nonvolatile memory device, the method comprising:

• determining whether a multi-conversion program command is received from an external apparatus;
• storing data of a first state in a first latch, data of a second state in a second latch, and data of a third state in a third latch of a page buffer based on data to be programmed received with the multi-conversion program command when the multi-conversion program command is received;
• and
• storing the data of the first state, the data of the second state, and the data of the third state stored in the page buffer in pages of a memory cell corresponding to an address to be programmed.

A data storage apparatus comprising:

• a nonvolatile memory device;
• and
• a controller configured to control an operation of the nonvolatile memory device,
• wherein the nonvolatile memory device includes:
• a memory cell array including a plurality of memory cells, each memory cell configured of a plurality of pages;
• a page buffer including a first latch configured to store data to be programmed in an original state, a second latch configured to store the data in an inverted state, and a third latch configured to store the data in a state XOR-operated with a preset value when the data is received from the controller;
• and
• a control logic configured to control the nonvolatile memory device to store the data of the original state, the data of the inverted state, and the data of the XOR-operated state in pages of a memory cell corresponding to an address to be programmed when a multi-conversion program command is received from the controller.