Semiconductor integrated circuit and method of manufacturing the same

Abstract

A semiconductor integrated circuit includes a plurality of functional blocks placed on a semiconductor chip and being respectively provided with predetermined functions by semiconductor devices and a gate array block placed on said chip. The gate array block includes a plurality of electrically connected basic cells implementing desired functions. The gate array block has a circuit designed after placing the functional blocks and the basic cells on the chip. The functional blocks and gate array block are laid out with at least one common mask in a first area including a center position on a surface of the semiconductor chip. The circuit also includes I/O buffers surrounding the first area.

1 . A semiconductor integrated circuit comprising: 
 a plurality of functional blocks placed on a semiconductor chip, said functional blocks being respectively provided with predetermined functions by semiconductor devices;    a gate array block placed on said chip, said gate array block being comprised of a plurality of electrically connected basic cells, said electrically connected basic cells implementing desired functions, the gate array block having a circuit designed after placing said plurality of functional blocks and said plurality of basic cells on said chip, said functional blocks and said gate array block being laid out with at least one common mask in a first area including a center position on a surface of the semiconductor chip; and    a plurality of I/O buffers surrounding the first area.    
     
     
         2 . A semiconductor integrated circuit according to  claim 1 , wherein a connection between basic cells is in accordance with a standard cell system.  
     
     
         3 . A semiconductor integrated circuit according to  claim 1 , wherein said plurality of functional blocks includes a CPU core block.  
     
     
         4 . A semiconductor integrated circuit according to  claim 1 , wherein said plurality of functional blocks includes a memory cell block.