How to figure out if an STM32 MCU is working without giving power

Ogulcan Ariyurek · ‎2016-07-27

Posted on July 27, 2016 at 15:29

Hi all,

I would like to know if the MCU is broken/burned without giving power to the MCU. The chip is STM32F407VGT6 (the one used in STM32F4 Discovery Board).

Thanks in advance!

Cheers,

Ogulcan

#stm32 #debug #power

Tesla DeLorean · ‎2016-07-27

Posted on July 27, 2016 at 15:44

It's going to be hard to motivate the electrons...

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AvaTar · ‎2016-07-27

Posted on July 27, 2016 at 16:18

A theoretical possibility - grind away the casing and check the whole silicon with an electron microscope of appropriate resolution.

Otherwise, there are only indicators that the MCU is -not- working (brown/black spots, cracked casings, melted pins ...).