- Not useful for battery applications
WFE
/WFI
instruction stop/decrease clock frequency
nrf52, use Systick or RTC?
RTC with 1ms resolution – YYYY-MM-DD HH:MM:SS.mmm
nRF52 SysTick Clock Source
SysTick timer on nRF52 fires 1/5 as often as expected
WFI instruction slowing down SYStick interrupt
How to set Systick timer in nRF52
Power Off mode