| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit capable of largely reducing the generation of noises, an increase in an IR drop, and a peak power consumption or the like by a circuit having a simple constitution, in a synchronous circuit operated while being synchronized with a clock signal; and to provide a method for designing the semiconductor integrated circuit. SOLUTION: The semiconductor integrated circuit has a plurality of flip-flops inserted among a plurality of combinational circuits, and a clock tree distributing the clock signals to a plurality of the flip-flops; and is operated synchronously by the clock signals. A plurality of the flip-flops contain a plurality of positive edge flip-flops distributing the clock signals in a positive phase from the clock tree, and being operated while being synchronized with the rise edges of the clock signals having the positive phase; and a plurality of negative edge flip-flops distributing the clock signals in an opposite phase from the clock tree, and being operated while being synchronized with the fall edges of the clock signals having the opposite phase. COPYRIGHT: (C)2007,JPO&INPIT
|
