PSoC6 eFuse manufacturing experience

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DeanG
Level 3
Level 3
10 replies posted First like given 5 questions asked

Were looking at blowing the eFuses when the unit (running PSOC6 MCU) when the device is powered by a coin cell battery 3 volts.  Per the data sheet and other posts, this “shouldn’t” be a problem.  However, we’re looking at producing 200k units.  Even at .5% failure rate, that’s 1000 units which is costly.

Question:  Does anyone have real-life manufacturing experience with eFuse programming using battery power coin cell 3volt coin cell?  Experience you can you share?

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1 Solution
AlenAn14
Moderator
Moderator
Moderator
500 replies posted 100 solutions authored 250 replies posted

Hi @DeanG ,

Programming the efuse bits require the VDDIO0 to be set at 2.5 V. The other power rails can be at any other supported voltage levels.

Please refer to section 2.4, Electronic fuses, of the PSoC 6 programming specification document for more details on this.

Warm Regards
Alen

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3 Replies
AlenAn14
Moderator
Moderator
Moderator
500 replies posted 100 solutions authored 250 replies posted

Hi @DeanG ,

Programming the efuse bits require the VDDIO0 to be set at 2.5 V. The other power rails can be at any other supported voltage levels.

Please refer to section 2.4, Electronic fuses, of the PSoC 6 programming specification document for more details on this.

Warm Regards
Alen

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DeanG
Level 3
Level 3
10 replies posted First like given 5 questions asked

Hi @AlenAn14 ,

Thanks for the response.  Yes we are following the data sheet and suppling 2.5 V on VDDIO0.   What I'm really interested in is any real-life experiences with programming the efuses when the PSoC6 is battery powered. This "shouldn't" be a problem, however we're looking at producing 200K units and even a small failure rate (for whatever reason) is still a lot of units.

Dean G.

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AlenAn14
Moderator
Moderator
Moderator
500 replies posted 100 solutions authored 250 replies posted

Hi @DeanG ,

Apologies for the delayed response on this but we can guarantee that the eFuse programming will be successful as long as the VDDIO0 voltage is within the specified 2.5 V +/-5%.

Warm Regards
Alen

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