Patent ID: 7911231

Claim:
A semiconductor integrated circuit device comprising logic circuitry that uses a plurality of basic cells each having a logic output terminal and a virtual power output terminal, further comprising: a wiring that connects the virtual power output terminal of a basic cell in the plurality of basic cells to the virtual power output terminal of another basic cell; the series of the plurality of basic cells including a first basic cell as one of basic cells in the plurality of basic cells that compose the logic circuitry, and a second basic cell using the output of the first basic cell as an input are treated as a group; the virtual power nodes or the virtual power output terminals of individual basic cells in the group are connected to each other with the wiring; an optional number of basic cells in a plurality of basic cells that compose logic circuitry are divided into n cell groups, which are first to n-th cell groups each having an optional number of basic cells; the virtual power nodes or the virtual power output terminals of a plurality of basic cells having an isolated time of logical operations in a plurality of basic cells belonging to the n cell groups are connected to each other with the wiring; the individual basic cells in the n cell groups, wherein the virtual power nodes are connected to each other with the wiring, belong to cell groups not logically adjoining; and each of the n cell groups is composed of logic circuitry having common flip-flops to initially supply signals.