3 ms·
I wonder how they do the unique 64 bit ID in a 10c part.
by taffronaut 4y ago
I wonder how they do the unique 64 bit ID in a 10c part.
- eqvinox 4y agohttps://en.wikipedia.org/wiki/EFuse https://en.wikipedia.org/wiki/EFuse Just needs a jig that connects to a wafer's worth of chips simultaneously with spring loaded contact fingers (not on the EFuses themselves, just power, ground, and any way to load code into the µC - i.e. you have bonding pads for this stuff anyway), and have the code burn through an unique combination of fuses.
- londons_explore 4y agoI believe it is normally done at the same time as the wafer scale test, so there is no additional time or cost.