Patent ID: 8610381

Claim:
A voltage determination device, comprising: a reference voltage generation circuit for generating a first reference voltage having a specific level; a determination target voltage line to which a determination target voltage is applied; a first voltage line to which the first reference voltage generated with the reference voltage generation circuit is applied; a second voltage line to which a second reference voltage having a level different from the specific level of the first reference voltage is applied; a switching circuit disposed between the first voltage line and the second voltage line for connecting the first voltage line and the second voltage line, said switching circuit being configured to perform a switching operation according to a level of the determination target voltage applied to the determination target voltage line; a determining circuit for comparing the level of the determination target voltage applied to the determination target voltage line with a threshold value voltage to determine the level of the determination target voltage; and a control unit for controlling a resistivity between the switching circuit and the second voltage line and controlling a level of the electric current flowing between the first voltage line and the second voltage line so that the level of the electric current flowing between the first voltage line and the second voltage line is maintained at a specific level when the control unit controls the determining circuit to determine the level of the determination target voltage, including a timing when the determination target voltage is applied to the determination target voltage line.