SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce area of an occupied region of I/O cells in a semiconductor integrated circuit device by reducing height of an I/O cell and preventing increase in width of the I/O cell at the same time.SOLUTION: A semiconductor integrated circuit device comprising I/O cells including a level shifter circuit, an I/O logic circuit, and an I/O buffer circuit and arranged around a core region. An I/O logic region in which the I/O logic circuit is arranged and an I/O buffer region in which the I/O buffer circuit is arranged overlap a region in which pads for the I/O cells are arranged and the I/O logic region and the I/O buffer region are arranged in juxtaposition with each other in a direction parallel with a side of the core region.SELECTED DRAWING: Figure 1