Patent ID: 6285248
Filing Date: 2001-09-04
Classification: H01L

Abstract:
A semiconductor integrated circuit comprising:at least one constant voltage generation section for increasing or decreasing a power voltage supplied from at least one external power source, based on a basic voltage, to generate at least one constant voltage;at least one function block to which is supplied said at least one constant voltage generated by said at least one constant voltage generation section;at least one operating state detection section for generating a second signal indicating an operating state of said at least one function block, based on a first signal including operating speed information of said at least one function block;at least one operating state encoding section for encoding the operating state of said function block to generate operating state data, based on said second signal; andat least one voltage output control section for modifying said basic voltage of said at least one constant voltage generation section, based on said operating state data;wherein an operating-setting signal is input to said at least one function block, and said at least one function block supplies said first signal to said at least one operating state detection section when said operating-setting signal is active.