| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit device which is improved in power consumption, packaging density, stability, stable time and the like. SOLUTION: In the semiconductor integrated circuit device equipped with a logic circuit including MIS (metal insulator semiconductor) transistors formed on a semiconductor substrate, a substrate bias control circuit is provided for balancing a first substrate bias voltage Vbp0 which is applied to a first conductive MIS transistor, and a second substrate bias voltage Vbn0 which is applied to a second conductive MIS transistor. The substrate bias control circuit includes first and second control circuits for controlling threshold voltages of MIS transistors comprising the logic circuit, and an oscillation circuit that includes the MIS transistors formed on the semiconductor substrate, and is configured to vary a frequency of an oscillated output. COPYRIGHT: (C)2005,JPO&NCIPI
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