RESET PULSE GENERATION CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To generate a stable reset pulse independent of a source voltage. SOLUTION: By providing a detection circuit (210) for detecting the rise of a source voltage of a logic circuit having a battery as an operation power source, a latch circuit (220) capable of holding the output signal of the detection circuit, and a terminal (CLR) for intaking a signal capable of clearing the held condition of the latch circuit, the threshold of the detection circuit is determined by the output voltage of the battery. Thereby limitation on the rise time of a source VCC on the high voltage side is eliminated and a satisfactory power-on-reset signal is obtained. COPYRIGHT: (C)2004,JPO