Patent ID: 6320810
Filing Date: 2001-11-20
Classification: G11C

Abstract:
A semiconductor device comprisinga power supply circuit receiving an external power supply potential, supplying a power supply current to a load circuit connected to an internal power supply node, and controlling an amount of said power supply current at a response speed corresponding to externally applied setting such that the potential on said internal power supply node is held at a constant potential, said power supply circuit includinga reference potential generating circuit for generating a reference potential used as a reference value of said constant potential,a control circuit for receiving said setting,a level shifter circuit for shifting levels of the potential on said internal power supply node and said reference potential into predetermined potential ranges at a response speed corresponding to the output of said control circuit, and outputting the level-shifted potentials,a first drive circuit operating in accordance with the level-shifted potentials, anda second drive circuit for receiving said external power supply potential, and supplying said power supply current of the amount corresponding to an output of said first drive circuit to said internal power supply node.