Patent ID: 8726046

Claim:
An integrated circuit device comprising: an electrostatic protection circuit having a filter coupled between first and second power supply lines, the first and second power supply lines being coupled to respective external terminals, a switch circuit coupled between the first power supply line and an output of the filter, and a current pathway between the first and second power supply lines being formed in response to an increase in a voltage between the first and second power supply lines; and a power supply generating circuit having a switching element with a first terminal to which a voltage of the first power supply line is provided, and being configured to generate a switching control signal for controlling the switching element ON and OFF and to control a power supply voltage according to a voltage of a second terminal of the switching element, based on the switching control signal, wherein the power supply generating circuit generates, based on the switching control signal, an electrostatic protection circuit control signal for controlling the electrostatic protection circuit, and in the electrostatic protection circuit, the switching circuit turns ON in response to the electrostatic protection circuit control signal.