| 摘要 |
In a cell base design, when a circuit using a spare cell is corrected, a wiring length is shortened as much as possible, and the number of wiring layers which are affected by correction is reduced. Mask pattern data that expresses the configurations of a signal input terminal and a signal output terminal of a spare cell is set to mask pattern data of a wiring layer that is equal to or higher than a second wiring layer. As a result, the length of a wiring that is connected to the spare cell can be shortened as much as possible. |
