| 摘要 |
<P>PROBLEM TO BE SOLVED: To dynamically change a capacity of a capacitor depending on use environment of a device to reduce noise. <P>SOLUTION: A semiconductor circuit having a decoupling capacity between a first power supply (110) and a second power supply (111) comprises a means (102) that measures a noise quantity of the semiconductor device and a means (104) that varies the capacitance value of the decoupling capacity depending on the measurement result of the noise quantity. <P>COPYRIGHT: (C)2008,JPO&INPIT |
