RE: sleep current with timer running using LF clock LFINT

Stian Røed Hafskjold — Mon, 22 Oct 2018 13:29:45 GMT

You can wake the chip up by using the internal RTC. It requires the chip to be in System ON mode.

So this sums up to 1.9uA when using the internal LF clock.

Numbers can be found here:

I_{ON_RAMOFF_RTC}

System ON, No RAM retention, Wake on RTC

1.9

µA

By using an external timer you can put the chip in system OFF mode.

I_{OFF_RAMOFF_GPIO}

System OFF, No RAM retention, Wake on GPIO

0.3

µA