Patent ID: 6140862
Filing Date: 2000-10-31
Classification: G05F,G11C

Abstract:
A semiconductor circuit device having an internal power supply circuit connected to an external power supply node receiving an external power supply voltage and generating an internal power supply voltage lower than said external power supply voltage at an internal power supply node, wherein said internal power supply circuit includes:a differential amplifier having an inversion input terminal receiving a reference voltage;a driver transistor having its gate connected to an output terminal of said differential amplifier and connected between said external power supply node and said internal power supply node;a plurality of resistance elements connected in parallel between said internal power supply node and a non-inversion input terminal of said differential amplifier, each having a prescribed resistance state and an insulated state;a voltage divide element connected between said non-inversion input terminal of said differential amplifier and a ground node; andswitching means connected to each of said plurality of resistance elements and capable of switching said plurality of resistance elements from the prescribed resistance state to the insulated state and from the insulated state to the prescribed resistance state.