SEMICONDUCTOR DEVICE AND METHOD FOR DRIVING THE SAME

摘要

An operational problem of conventional variable resistance elements (ReRAMs), i.e., unstableness of setting/resetting operation when the variable resistance element is to be set or reset by continuously applying signals of a prescribed voltage for a prescribed period, is solved. A semiconductor device which can perform stable, sure and high-speed setting/resetting operation, and a method for driving such semiconductor device are provided. A variable resistor varies to be in a first state and in a second state having a resistivity lower than that in the first state, in accordance with voltage application. A waveform wherein a first voltage value corresponding to the first state and a second voltage value having an absolute value smaller than that of the first voltage value are alternately transited is applied to the variable resistor.