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RRadi
RRadi
Visitor II
October 2, 2019
Solved

STM32: why pins usable in general pourpose cannot be all 5V tolerant?

  • October 2, 2019
  • 1 reply
  • 617 views

Hi at all. My question: in STM32 microcontroller, why some pins are 5V tolerant and other no? Why I/O pins usable in general purpose config cannot be all 5V tolerant?

Thanks

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Best answer by Tesla DeLorean

Some are used for the ADC, which has less tolerance. There's other circuitry so it doesn't all back-feed into the 3V power ring.

1 reply

Tesla DeLorean
Tesla DeLoreanBest answer
Guru
October 2, 2019

Some are used for the ADC, which has less tolerance. There's other circuitry so it doesn't all back-feed into the 3V power ring.

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