Patent ID: 8472270
Filing Date: 2013-06-25
Classification: G11C

Abstract:
1. A method of testing one-time-programmable memory, the method comprising: limiting current through a one-time-programmable memory to a low amplitude signal, the one-time-programmable memory having a fuse configured to blow upon receipt of a signal having a threshold amplitude, the low amplitude signal being less than the threshold amplitude; using blow signal assertion circuitry to attempt to assert a blow signal to the fuse, the blow signal assertion circuitry, when not defective, also configured to permit the low amplitude signal to flow through the fuse when the fuse is not blown and the blow signal is asserted, the fuse not blowing in response to flow of the low amplitude signal through the fuse; and producing an output signal having a success value if the low amplitude signal flows through the fuse, the output having a failure value if the low amplitude signal does not flow through the fuse.