Patent ID: 7019534

Claim:
A fuse detection circuit, comprising: a fuse bridge circuit in which a first arm of the fuse bridge circuit has a fuse under detection, for producing a first voltage in the first arm in response to a read signal pulse; a second arm of the fuse bridge circuit having a reference fuse, for producing a second voltage in the second arm in response to the read signal pulse; a sensing circuit for sensing the first voltage and the second voltage as status value data; a latch circuit keeping the data in the sensing circuit; and a timing control circuit to turn off the fuse bridge circuit after the latch circuit has been activated, wherein, the timing control circuit has a first NAND gate receiving a first current pulse and a second current pulse as inputs, and a second NAND gate receiving an output of the first NAND gate and the read signal pulse as inputs, and an output of the second NAND gate delaying turn off of the bridge current until after the latch circuit has been activated.