Patent ID: 6292015
Filing Date: 2001-09-18
Classification: G11C,H03K

Abstract:
A semiconductor integrated circuit device comprising:a main power supply line;a sub-power supply line;coupling means for electrically coupling said main power supply line and said sub-power supply line in an active cycle and for electrically uncoupling said main power supply line and said sub-power supply line in a standby cycle;a logic circuit including a first logic gate operating with voltage on said main power supply line as an operation supply voltage, applying a prescribed logical processing based on a supplied input and outputting a resultant one, and a second logic gate operating with voltage on said sub-power supply line as an operation supply voltage, applying a prescribed logical processing based on a supplied input and outputting a resultant one; andvoltage control means for controlling the voltage on said main power supply line to apply to said logic circuit a prescribed operation supply voltage required for ensuring operation of said logic circuit in said active cycle.