Design system of semiconductor integrated circuit element, program, program product, design method of semiconductor integrated circuit element, and semiconductor integrated circuit element

摘要

A design system, a program, a program product and a design method which can easily design a semiconductor integrated circuit element having a decoupling capacitor are provided. In an element region which serves as an IC chip 100, an input/output block 110 is arranged, and analog-signal-circuit blocks 120 etc. are arranged. In the capacity insertion regions 160 etc. of an open region 115 which does not belong to the blocks, unit capacity cells 10a are arranged in a latticed pattern. Analog wiring lines 170 are arranged between the input/output block 110 and the analog-signal-circuit blocks 120 etc., and the unit capacity cells 10a of the capacity insertion region 160 are respectively connected wiring lines 171 and 172 of power source and GND potentials by via-conductors 173 and 174. Thereafter, unit cells 180 are arranged, and wiring lines 190 for the connections between the unit cells and between the input/output block 110 and memory blocks 140 etc. are arranged. Further, the unit capacity cells 10a of the capacity insertion regions 161 etc. are respectively connected to power source and GND wiring lines 191 and 192 by via-conductors.