DRIVE VOLTAGE CONTROL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To realize low power consumption with respect to a circuit in the operating state by revising a drive voltage applied to an operating circuit in response to a frequency of a system clock. SOLUTION: An internal cell area 101 (equivalent to a work area) and an F/V voltage drop circuit 102 (equivalent to drive voltage control circuit) are provided in an integrated circuit 100. Then the F/V voltage drop circuit 102 receives a system clock CLK and a constant voltage power supply V0 from the outside of the integrated circuit 100. Furthermore, the internal cell area 101 is made up of a CMOS transistor(TR) or the like and receives the system clock CLK and an output voltage V1 of the F/V voltage drop circuit 102. The internal cell area 101 uses the output voltage V1 of the F/V voltage drop circuit 102 and is operated by an operating frequency provided by the system clock CLK.