C16 burned in stm32 L010RB

[Minaihab]

While connecting the battery, the ground was inverted with the VCC and vice versa. As a result, this capacitor burned out. I need to know the function of this part and if I can continue to work normally after what happened.

[AScha.3]

see circuit:

C16 and probably U3 needs repacement. (maybe C17 also.)

Check if connecting USB : st-link and cpu L010 still working (they should).

[Tesla DeLorean]

Bulk capacitance on the input side of the regulator.

It's destroyed itself, so likely not part of the active circuit at this point. Check if it is open-circuit now with a meter.

I'd expect the board might continue to function, regulation will be less good.

Do you have the skill/equipment to replace?

[Minaihab]

How can i Check if it is open-circuit by the meter ?

[Tesla DeLorean]

When did your house burn down?

Put multi-meter in continuity or resistance mode. You don't want it to beep or show low ohm value.