| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit device, such as a microprocessor, which is provided with rapidity, low electric power, and reliability at the same time. <P>SOLUTION: The device has a main circuit (LOG) which comprises a transistor configured on a semiconductor substrate, and a substrate bias control circuit (VBC) which controls voltage imposed to the substrate. The main circuit has a switching transistor (MN1, MP1) which controls voltage imposed to the substrate. A control signal outputted from the substrate bias control circuit is inputted into a gate of the switching transistor, and the control signal is returned to the substrate bias control circuit. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
