Use P0.00 and P0.01 as Analog Inputs on nRF52832

[Embel_Tech]

        I am currently working on a project involving the nRF52832 SoC using nRF5 SDK v15.0.0. According to the nRF52832 Product Specification v1.4, it is mentioned that P0.00 (AIN1) and P0.01 (AIN2) can be used as analog inputs for the SAADC (Successive Approximation ADC). My requirement is to utilize these pins specifically for battery voltage measurement.

Query:

• Can P0.00 and P0.01 reliably be used as analog input channels with the SAADC on nRF52832?

• Are there any hardware or firmware considerations specific to these pins (e.g., default reset states, conflicts with other functionality)?

• What are the required implementation steps or documentation references for configuring and using these pins in the SAADC peripheral for battery voltage monitoring?

[Vidar Berg]

Hello,

The only additional consideration when using these pins as analog inputs is that you won't be able to use the LFXO, but I assume your design does not include the 32K crystal  anyway since you have these pins available in your design.

What are the required implementation steps or documentation references for configuring and using these pins in the SAADC peripheral for battery voltage monitoring?

I would need a bit more information about your battery and supply circuit to answer this. 

Best regards,

Vidar