ADC pin with voltage

[DH.Yoon]

After turning on the power,

I did not connect anything on the board.

but it is about 2.7 volts out of the pin (p0.04).

It was almost zero volts before,

but the output suddenly comes out.

[Simonr]

Hi

Then I am sorry to say that you probably damaged your chip internally by exceeding the maximum input voltage specified in the nRF52832 product specification to be 3.9V.

Best regards,

Simon