One-time programmable fuse read

A method comprising:

• mirroring a reference current to produce a reference voltage and a gate bias voltage using a reference voltage generator circuit;
• using a fuse read circuit coupled to the reference voltage generator circuit and further coupled to a first fuse, mirroring the reference current using the gate bias voltage to produce a fuse read voltage across the first fuse, the fuse read circuit being one of a plurality of fuse read circuits each coupled to a fuse of a plurality of fuses;
• comparing the fuse read voltage and the reference voltage;
• and
• indicating a state of the first fuse using the comparing.

A system comprising:

• a processor;
• and
• a reference voltage generator circuit coupled to the processor and configured to mirror a reference current to produce a reference voltage and a gate bias voltage;
• and
• a plurality of fuse read circuits coupled to the processor, the plurality of fuse read circuits each coupled to the reference voltage generator circuit and each further coupled to a fuse of a plurality of fuses, wherein each fuse read circuit of the plurality of fuse read circuits is configured to mirror the reference current using the gate bias voltage to produce a fuse read voltage across each fuse coupled to the plurality of fuse read circuits,
• wherein each fuse read circuit of the plurality of fuse read circuits is configured to compare the fuse read voltage of each fuse and the reference voltage and to indicate a state of each fuse coupled to each fuse read circuit using the comparison.