Hi Team,
My customer are using ADCINB2/COMP1B/AIO10 for AIO function as output and ADCVINB3 for ADC function, they found that the output voltage of AIO10 will impact the voltage of another pin ADCVINB3 as below show, the peak voltage on ADCVINB3 is 1.7Volt and have similar waveform as that of AIO10, the waveform are measured when pin ADCVINB3 is float, if connect pin ADCVINB3 to a pull down resistor, then there will no this issue, question is why the AIO10 output will impact the voltage of pin ADCVINB3 without pull down resistor?
customer also did a test that using one GPIO pin for output, there is also have no this issue on pin ADCVINB3 when it is float.
ADCINB2/COMP1B/AIO10