Method of designing layout of semiconductor integrated circuit, method of designing and manufacturing semiconductor integrated circuit using the same, and design system performing same

Abstract

A method of designing a layout of a semiconductor integrated circuit, including receiving input data defining the semiconductor integrated circuit; determining a first layout of the semiconductor integrated circuit by performing a placement and routing (P&R) procedure based on the input data, wherein the first layout includes a plurality of blocks, a plurality of standard cells, a plurality of power wirings, a plurality of ground wirings, a plurality of clock wirings, and a plurality of signal wirings; selecting a target region of the first layout, wherein the target region is capable of accommodating at least one additional power wiring and at least one additional ground wiring; and determining a second layout of the semiconductor integrated circuit by modifying the first layout to include the at least one additional power wiring and the at least one additional ground wiring in the target region.