Power consumption issue of Timer20 in counter mode

[joey]

HI，

I am using the nRF54L15 with SDK v3.0.0. I am currently using Timer20 for a counting function. My original power consumption was 4.6 μA when Timer20 was not enabled. After adding and enabling Timer20, the power consumption increased to 37 μA. My configuration is as follows:

Is there an issue with my configuration, or does the timer consume significant current during sleep even in counter mode after initialization?

Thanks!

[Kazi Afroza Sultana]

Hello,

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

source: Current consumption

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.

BR

Kazi