A selectively enabled clamp circuit for limiting voltage overshoot on an inputoutput pin of an associated integrated circuit device includes a single discharge transistor and a select circuit. The cell connection piece includes an interconnect bus, a plurality of bus tabs unitarily formed with the interconnect bus, and a terminal bus coupled with the interconnect bus. The pixel value of the image pixel corresponding to the same location where the candidate object is found in the fractal map may be compared to a threshold value.