Voltage on pin is 1.2 V when cleared.

[noble_JL]

We have a custom board with a uBlox Nina-B1 module. Pin 0.05 is connected to an analog switch (NX3DV2567) which powers a microphone and capacitive switch. When the pin is set high, everything works as expected, 3.3V from pin 0.05 toggles the analog switch. There are no components between the select input of the analog switch, and pin 0.05.

However, when the pin is cleared, it still reads 1.2V. The output of the analog switch also reads 1.2V, rather than the 3.3V supply voltage. What might be causing this issue?

[Priyanka]

Hi Jeff,

This looks like there is some residual voltage. What do you mean the pin is still 1.2V? When the pin is high, it shows 3,3V and when the pin is low or cleared, it should read 0V?

Regards,

Priyanka