Patent ID: 6879193

Claim:
A semiconductor integrated circuit, characterized by comprising: a circuit block including a power line of at least one electrical system and a plurality of internal semiconductor devices to which power is supplied from the power line; a plurality of voltage detecting means each connected to the power line at a given position on the power line and each outputting a voltage detection signal at a given potential when the potential at the given position on the power line is a predetermined potentials; first power supply means for supplying or shutting off power to the circuit block in accordance with a power-supply control signal input from outside; reset signal generating means for receiving the voltage detection signals from the plurality of voltage detecting means and outputting a reset signal to the circuit block when all the voltage detection signals from the plurality of voltage detecting means are not at the a given potential, while stopping the output of the reset signal to the circuit block after all the voltage detection signals are at the given potential; and second power supply means for supplying power to the reset signal generating means.