Hello,
We are using nRF52840 chip for a power-sensitive application.
We use the UART which is connected to a LoRaWAN module.
Now when I enter the system ON mode after completing sending data via LoRaWAN module, I see that the system on current is about 600mA.
At this point I only have the UART and the RTC peripheral running. There is a fallback timer that has been initialized but is not running.
Does this number look correct? I feel that 600mA in system ON mode is too high even when the UART is active.
I tried disabling the UART and then the current consumption drops to 20uA. But one peripheral consuming so much current doesn't seem correct.
Please advise how we can reduce this current.
Thanks,
Aditya