A semiconductor chip is provided comprising a semiconductor substrate on
which an integrated circuit is formed. The semiconductor chip, which is
provided on the semiconductor substrate in an area array, further
comprises a plurality of electrodes electrically coupled with the inside
of the semiconductor substrate, wherein the electrodes are arranged into
a plurality of first groups respectively lined along a plurality of
paralleling first straight lines and, further, into a plurality of second
groups respectively lined along a plurality of second straight lines
which extend so as to intersect with the first straight lines.