Patent ID: 7826268
Filing Date: 2010-11-02
Classification: G11C

Abstract:
1. A nonvolatile semiconductor memory, comprising: a first wire; a second wire adjacent to the first wire; a third wire disposed next to the second wire such that the second wire is disposed between the first wire and the third wire; a power supply circuit for setting each of the wires at a predetermined potential; and a determining circuit for determining presence or absence of a short circuit between the wires, wherein the power supply circuit fixes the second wire at a second potential different from a first potential, fixes the third wire at a third potential different from the first potential, and then fixes the first wire at the first potential, and after the first wire is brought into a floating state and a predetermined period has elapsed, the determining circuit determines whether or not the first wire is short-circuited with at least one of the second wire and the third wire, based on a potential of the first wire in the floating state.