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Why have “programmed” fuses the bit value 0?

April 26, 2017bit fuses programmed value

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Why have “programmed” fuses the bit value 0?

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Basically, fuses are just a bit in a special EEPROM area. For technical reasons, erased E[E]PROM cells have all bits set to the value 1, so unprogrammed fuses also have a logical 1. Conversely, programmed fuse cells read out as bit value 0. Back to FAQ Index.