Patent ID: 8085577

Claim:
A nonvolatile semiconductor memory device, comprising: a plurality of first lines; a plurality of second lines extending so as to cross the first lines; a plurality of memory cells each disposed at each of crossing-points of the first lines and the second lines and each comprising a variable resistor and a bi-directional diode; a first select circuit configured to select one of the first lines; a second select circuit configured to select one of the second lines; and a voltage control circuit configured to control a voltage of selected one of the first lines, unselected ones of the first lines, selected one of the second lines, and unselected ones of the second lines, respectively, the variable resistor being configured to change its resistance value depending on a polarity of a voltage applied thereto, and the voltage control circuit being configured to apply a voltage pulse to the selected one of the first lines and to connect a capacitor of a certain capacitance to one end of the selected one of the second lines.