I have a custom board based on NRF52811. Salient features:-
Both HF and LF crystals are present on board.
Power supply is 3.3V.
MCU DC-DC is enabled.
I am using Apache Mynewt OS for the software and to test the low power capability in sleep, there is a basic app setup which doesnt do anything so the OS puts the CPU in sleep.
The nominal current consumption is ~3-4uA which is acceptable, however after a period of ~2mins the current jumps to ~300uA and stays that way for another 2mins, after which it returns back to ~3-4uA. And this cycle keeps repeating. I checked the software and there are no tasks which wake up at 2mins to cause this consumption.
After going through the errata and forum I saw that there are quite few issues regarding Higher Iq in sleep. I checked all the errata mentioned in the doc and that doesnt seem to be the case.
Please let me know if any more details are required.
Thanks
Navaneeth
