SEMICONDUCTOR INTEGRATED CIRCUIT

PROBLEM TO BE SOLVED: To reduce a standby current of a semiconductor integrated circuit operated synchronizing with a clock signal. SOLUTION: A control circuit receives a plurality of control signal synchronizing with a clock signal, and generates a timing signal in accordance with combination of these control signals. A delay circuit delays an input signal received with asynchronism with a clock signal by the prescribed time. A receiving circuit receives an input signal delayed by the delay circuit synchronizing with no clock signal but a timing signal. That is, The receiving circuit is operated with asynchronism with a clock signal, receives only an input signal required for a semiconductor integrated circuit. Thereby, frequency of operation of the receiving circuit is reduced, power consumption can be reduced. As the number of circuits operated synchronizing with a clock signal can be decreased, a standby current can be reduced. Even if a frequency of a clock signal is increased, increment of a standby current is gentle.