Method for dividing a terminal in automatic interconnect routing processing, a computer program for implementing same, and an automatic interconnect routing processor using the method

In a method for dividing a terminal into a plurality of terminal units in automatic interconnect routing processing in a semiconductor device, a terminal portion, which is a part of the terminal, overlapped an intersection of the wiring grids in X-direction and Y-direction is extracted. A terminal region which includes the terminal portion is surrounded with a top side, a bottom side, a left side and a right side of the terminal region. These sides are moved outward so as to expand the terminal region, respectively, thereby dividing the terminal into a plurality of terminal regions.