Patent ID: 8848457

Claim:
A semiconductor storage device comprising: a plurality of local word lines; a plurality of bit lines intersecting the local word lines; a plurality of memory segments each including a plurality of nonvolatile memory cells provided to correspond to intersections between the local word lines and the bit lines, each of the memory segments being provided to correspond to a plurality of the local word lines; a sense amplifier provided to correspond to a plurality of the bit lines; a global word line provided to correspond to a plurality of the local word lines, and configured to be commonly driven in the memory segments; a decoder connected between the global word line and the local word lines corresponding to the global word line, and configured to selectively drive a certain local word line from the local word lines; a segment controller provided in each of the memory segments, and configured to select one of the memory segments to be driven; and an input/output part configured to output read data from the memory segments or to receive write data to the memory segments, wherein during a read operation in which the sense amplifier reads out a certain page data, the segment controller and the decoder change the local word line selected in a second memory segment among the memory segments without changing the global word line selected in the second memory segment, when read data from a first memory segment among the memory segments is output from the input/output part.