Semiconductor memory device

摘要

The invention relates to a semiconductor memory device comprising a plurality of memory cells (10); a word line (WLO) connected to the plurality of memory cells (10); a boosted voltage generating circuit (14) which generates a constant boosted potential (VPP) higher than a power-supply potential (VCC); a level-shifting circuit (15) which level-shifts a precharge signal (PRCH) using the power-supply potential (VCC) to a boosted precharge signal (PRCH') using the constant boosted potential (VPP); a decoder circuit (13-0), having address signal input terminals to which address signals (A0, A1, AK) are inputted, a precharge signal input terminal to which the boosted precharge signal (PRCH') is inputted, and output terminal, the decoder circuit (13-0) outputting one of the constant boosted potential and a ground potential (VSS) from the output terminal thereof in accordance with the address signals and the boosted precharge signal; a circuit having an inverter circuit (30-0, 18-0), a P-channel transistor (28-0) and an output terminal, the inverter circuit (30-0, 18-0) comprising an input terminal connected to the output terminal of the decoder circuit (13-0) and an output terminal, the inverter circuit (30-0, 18-0) being supplied with the constant boosted potential (VPP) and the ground potential (VSS), the P-channel transistor (28-0) comprising a gate terminal connected to the output terminal of the inverter circuit (30-0, 18-0) and a current path, one end of the current path being supplied with the constant boosted potential (VPP) and another end of the current path being connected to the output terminal of the decoder circuit (13-0) and; and a word line driving circuit (11-0) which drives the word (WL0) in accordance with a potential at the output terminal of the circuit or which is associated with the output terminal of the circuit and drives the word line (WL0).