Patent ID: 7078945

Claim:
A semiconductor device, comprising: a macro circuit connected to an external power supply, including a direct current consumption circuit that consumes direct current in a normal mode in response to a start signal; a start signal generation circuit for generating the start signal in response to a stop signal that is in a deactivated state; and a reset circuit connected to the start signal generation circuit, the reset circuit including a power-on reset circuit and a composite circuit, wherein the power-on reset circuit generates a power-on reset signal and the composite circuit generates a composite reset signal by logically combining the power-on reset signal and the start signal and provides the composite reset signal to the direct current consumption circuit to change the state of the direct current consumption circuit to a reset mode when at least one of the power-on reset signal and the start signal is set to a first predetermined level, and wherein the state of the direct current consumption circuit is changed from the reset mode to the normal mode when both the power-on reset signal and the start signal are set to a second predetermined level.