Patent ID: 8559225

Claim:
A method of operating a nonvolatile memory device having an all bitline structure and comprising a memory cell array and a plurality of page buffers configured to temporarily store data read from the memory cell array, the page buffers comprising odd page buffers connected to odd bitlines and even page buffers connected to even bitlines, a memory page of the memory cell array comprising an odd half page comprising memory cells connected to the odd bitlines and an even half page comprising memory cells connected to the odd bitlines, the even bitlines and the odd bitlines being disposed alternately, memory cells of the odd half page and the even half page being connected to a common wordline, the method comprising: receiving a read command; if the read command is a half page read command, sensing data stored in one of the odd half page and the even half page via one of the odd bitlines and even bitlines; and storing the sensed data in at least one portion of the page buffers; and reading the sensed data stored in the at least one portion of the page buffers.