Patent ID: 7884642

Claim:
A system LSI, comprising an input/output section and a logic circuit section, wherein the input/output section includes: an I/O power source cell; and a plurality of I/O cells in each of which an I/O power source line is provided for supplying source power from the I/O power source cell, and the logic circuit section includes: a first I/O power consuming circuit which uses the I/O power source cell as a power source such that a power supply voltage to said first I/O power consuming circuit is higher than a power supply voltage to another portion of said logic circuit section, the first I/O power consuming circuit being connected to a first line leading from the I/O power source line in at least one of the plurality of I/O cells, wherein the first I/O power consuming circuit is an electric fuse circuit which uses the I/O power source cell as a power source for programming.