| 摘要 |
PROBLEM TO BE SOLVED: To take a measure against an antenna effect simply in an automatic layout system for LSI layout design. SOLUTION: In an automatic layout routing method using cells constituting a semiconductor integrated circuit, a fill cell having a protection circuit for preventing electrification is disposed in a gap between the disposed cells. Such a protection circuit is constituted by diode elements. An antenna effect due to electrification of wiring is checked by using an EDA(electronic digital analyzer) tool, and wiring the requires a measure against the antenna effect is connected to the protection circuit in the fill cell. Furthermore, in a semiconductor integrated circuit layout method, when a fill cell is not disposed in the vicinity of the wiring that requires a measure against an antenna effect, a plurality of gaps generated between cells constituting the semiconductor integrated circuit are gathered in the vicinity of the wiring that required a protecting measure against an antenna effect. |
