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sdobrets
sdobrets
Associate
October 31, 2015
Question

stm32f051c8: powering-up of analog part is mandatory

  • October 31, 2015
  • 1 reply
  • 535 views
Posted on October 31, 2015 at 18:58

Hi all,

I've found a surprising behaviour of stm32f051c8 controller. For simplicity reasons, power was provided for IO and core parts only, analog part excluded. STLink utility is unable to connect to the device. Is there an explanation for this?
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    1 reply

    waclawek.jan
    waclawek.jan
    Super User
    October 31, 2015
    Posted on October 31, 2015 at 19:57

    Reset is driven from analog part, at least. Stick to the datasheet requirements - VDDA should be within a small difference from VDD.

    Is there such thing, an mcu with truly separate analog, at all?

    JW
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