| 摘要 |
The present invention provides a semiconductor integrated circuit which can reduce power consumption without hampering operation of a CPU. A power supply control circuit 40 installed separately from a CPU 10 detects a signal (e.g., an idle signal Si) from the CPU 10 installed on a semiconductor chip 1. In response to the idle signal Si, the power supply control circuit 40 controls supply of a source voltage Vp to the CPU 10 by controlling a switch element 30_1. This makes it possible to control power supply efficiently without hampering the operation of the CPU 10. |
