Semiconductor integrated device and apparatus for designing the same

A semiconductor integrated device, comprising:

• a first circuit unit to which electric power is supplied from a first power supply wiring and a second power supply wiring;
• a second circuit unit to which electric power is supplied from a third power supply wiring and a fourth power supply wiring;
• a first interface circuit unit formed in the first circuit unit;
• and
• a second interface circuit unit formed in the second circuit unit, the second interface circuit unit being configured to perform any of inputting and outputting a signal to and from the first interface circuit unit,
• wherein the second power supply wiring is coupled to the fourth power supply wiring at a node, wherein the second interface circuit unit and the first interface circuit are arranged with respect to each other in an arrangement that reduces a wiring resistance in an electrostatic discharge current path within the semiconductor integrated device, and wherein the arrangement of the second interface circuit and the first interface circuit is independent of a configuration of other circuits within the semiconductor integrated device.