Semiconductor storage device having a divided word line structure

摘要

There is described a divided word line semiconductor storage device including a plurality of sub-word lines each having an open end and a main word line provided so as to be shared among the plurality of sub-word lines. The semiconductor storage device further includes a decoder which selectively supplies a high or low potential to a predetermined portion of each sub-word line according to whether or not the sub-word line corresponds to a designated address, and switching devices capable of connecting the open ends of the plurality of sub-word lines to a ground potential.