Integrierte Schaltung in Hauptscheibentechnik.

摘要

A semiconductor circuit comprises basic cells formed in an internal cell region on an integrated-circuit chip and pads (221, 222, ..., 22n) for input/output cells, the pads being arranged in peripheral regions on said chip. The semiconductor circuit further comprises first logic circuit means (231, 232, ..., 23n) provided for each of the input/output cells, each including logic circuits formed by transistors of relatively high drive capability which are a part of said respective input/output cells, the first logic circuit means being positioned in the peripheral regions. The present invention also comprises second logic circuit means (251, 252, ..., 25n) provided for each of the input/output cells, each including remaining logic circuits of the respective input/output cells, the second logic circuit being formed by the basic cells formed in the internal cell regions, so that each of said input/output cells is formed by one pad and the combination of the first and second logic circuit means.