RE: Power consumption issue of Timer20 in counter mode

Kazi Afroza Sultana — Fri, 05 Sep 2025 13:00:43 GMT

Hello,

When timer is active, it's normal to observe some higher current than usual. You can look at this table

which shows the typical current consumption of TIMER 20 (when running at 16MHz and running at 1Mhz) is 142 uA and 121uA. So, your measured current is in the range according to the documentation.

If you want to achieve ultra-low power, you can use GRTC instead of TIMER.

Thanks.

Kazi