Semiconductor memory device

摘要

A semiconductor memory device includes a plurality of memory cell rows each including a plurality of memory cells; a plurality of row selection signal lines each for transmitting a row selection signal to the memory cells of each memory cell row; and a row decoder for giving a row selection signal to the row selection signal line connected to the memory cells on a memory cell row in accordance with the row address input externally, wherein the row selection signal is at a power supply voltage level during a reading-out period, an intermediate voltage level between the power supply voltage and a ground level during the writing-in period, and the ground level at periods other than the writing-in and reading-out periods.