Patent ID: 7184353

Claim:
A semiconductor device comprising: N number of fuse circuits having built-in fuses where N is a natural number; 1st to Nth register circuits that are respectively connected to said N number of fuse circuits, and that read the fuse data stored in said fuses; Nth+1 to 2Nth register circuits that hold said fuse data that is respectively transferred from said 1st to Nth register circuits; and a logic circuit that is connected to said Nth+1 to 2Nth register circuits, and that performs specified logic operations on said fuse data that is held by the register circuits; wherein a Kth register circuit and a Kth+1 register circuit are connected, and said fuse data is transferred from said Kth register circuit to said Kth+1 register circuit according to self-timing handshake logic where K is a natural number from 1 to 2N−1.