Patent ID: 8253475

Claim:
A fuse detecting apparatus, comprising: a detector, comprising: a detecting switch module, coupled between a first reference voltage and a fuse, for receiving first and second control signals and generating an initial detecting result according to the first and second control signals and a short state or an open state of the fuse, wherein the fuse is coupled between the detecting switch module and a second reference voltage; and a detecting latch, coupled to the detecting switch module, for receiving the initial detecting result, and storing a voltage level of the initial detecting result or maintaining its originally stored voltage level according to the initial detecting result, wherein the detecting latch generates a pre-calibrating detecting signal according to its stored voltage level; a calibrator, comprising: a calibrating switch module, coupled between the first reference voltage and second reference voltage, for receiving the first and second control signals, and generating a calibrating result according to the first and second control signals; and a calibrating latch, coupled to the calibrating switch module, for receiving and storing the calibrating result, and outputting a calibrating signal according to an inversion of the calibrating result; and a logical operating unit, coupled to the detector and the calibrator, for performing a logical operation according to the pre-calibrating detecting signal and the calibrating signal, so as to generate a calibrated detecting signal.