Xavier NX RTC coin cell voltage monitoring

I wanted to know if it’s possible to monitor the coin cell voltage connected to the Xavier NX module to maintain RTC date and time. I am aware that it is possible to configure the charging current/voltage. But we would like to know what is the coin cell’s voltage so as to act accordingly if the voltage is critically low in our offline time critical application

Hi darien.rodrigues1,

Are you using the devkit or custom board for Xavier NX?
What’s your Jetpack verison in use?

Could you share how you connect the coin cell on your board?

Hi Kevin,

  1. We use a custom board for Xavier NX 8GB
  2. We use Jetpack 5.1.1
  3. There is an image attached on how we connect the coin cell to pin #235 of the SODIMM connector. The diode is not populated. The 0 ohm resistor is populated. We measured the discharge current of 1.8 uA, and a charge current of 70 uA. We now want to monitor the coin cell voltage.


It is not supported.