SEMICONDUCTOR DEVICE HAVING A LIBRARY OF STANDARD CELLS AND METHOD OF DESIGNING THE SAME

摘要

In a semiconductor device provided with a plurality of standard cells each comprising an input terminal and MOS transistors, a diffused region having a substantially negligibly small resistance is formed in a semiconductor substrate, and the input terminal of the standard cell and gates of the MOS transistors are connected through the diffused region. Also, a diffused region is formed under the input terminal in the substrate, and the input terminal is connected to the diffused region. In a modification, another standard cell is formed by forming a diffused region and a metal layer connected to the diffused region on the substrate, and the another standard cell is connected to the input terminal.