| 摘要 |
A semiconductor integrated circuit apparatus that enables function blocks in a semiconductor integrated circuit freely to vary power supply voltage and system clock frequency on the time axis, and also to exchange data among themselves. In a semiconductor integrated circuit apparatus 100, a first function block 110 has a first clock generation circuit 111 that generates a first system clock supplied to circuitry in a function block, first internal memory 112 in which data is read/written by means of the first system clock, and a selector 113 that selects the first system clock or a second system clock and supplies the selected clock to first internal memory 112. A clock selected by selector 113 from the first system clock or the second system clock is supplied as the clock supplied to first internal memory 112.
|
