Mitsubishi Denki Kabushiki Kaisha

Shizuo Morizane

Tsutomu Takabayashi

Bump areas for signals are spread on upper and lower positions with respect to Vdd and Vss lines in an I/O buffer. Thus, the direction of routing the lines from bumps for signals to the I/O buffers is spread in two directions. A greater number of I/O buffers can be accommodated without increasing the size of a semiconductor integrated circuit.

Semiconductor integrated circuit

An integrated circuit has a functional circuit for achieving an actual operation function of the integrated circuit, and a redundant circuit for replacing a defective circuit within the functional circuit. This integrated circuit has I/O regions for signal transmission between the functional circuit and outside of the functional circuit. Each I/O region incorporates fuse boxes for switching from a defective circuit to the redundant circuit.

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Tokyo, Japan

Shizuo Morizane