Semiconductor memory device

摘要

A semiconductor memory device has a plurality of memory cells arranged in a two-dimensional matrix array, word lines for connecting memory cells of each row to a row decoder, and bit lines for connecting memory cells of each column to a column decoder. The word lines include first word lines each of which is connected to several memory cells in each column section of one row. The word lines also include a second word line connected to the first word lines of each row through corresponding switches. In response to a column address signal, one of the switches of each row is turned on, so that one of the first word lines is connected to the corresponding second word line.