Pin input voltage of NRF5340

[JonasForssell]

Question regarding nrf5340 ADC input tolerance

If I power the nrf5340 from the VDDH pin at 5V, will the ADC input pins be able to read up to 5V then or just 3.3V?

Thanks

/Jonas

[Einar Thorsrud]

Hi Jonas,

The absolute maximum rating for I/O pin voltage is VDD + 0.3. The maximum input voltage depend on your VDD voltage, i.e., the output of VREGH, as configured in UICR.VREGHVOUT. This limit apply to analog inputs (like SAADC) as well as digital inputs.