Patent ID: RE44229

Claim:
A semiconductor integrated circuit device having a first operating mode and a second operating mode comprising: an external terminal; a first step down circuit to receive a supply voltage through the external terminal, to generate a first internal voltage lower than the supply voltage, and to output the first internal voltage through a first output terminal during the first and second operating modes; a second step down circuit to receive the supply voltage through the external terminal, to generate a second internal voltage lower than the supply voltage, and to output the second internal voltage through a second output terminal during the first operating mode, and to bring the second output terminal to a ground level during the second operating mode; a first internal circuit to receive the first internal voltage through the first output terminal; a second internal circuit to receive the second internal voltage through the second output terminal; a state control circuit to bring the semiconductor integrated circuit device into the first operating mode or the second operating mode; wherein the operating current of the second step down circuit is interrupted during the second operating mode.