Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit

摘要

In a system for use in combination with a power source circuit, a holding circuit is operable in response to interruption of an input signal to deenergize the power source circuit and is put into a self-holding state to hold a stop mode of the power source circuit. The self-holding state is released on arrival of the input signal to unlock the stop mode.