nRF54L15 WDT power consumption in System ON IDLE

[mmdunc]

Hi,

In have the nRF54L15 in System ON IDLE. I can see that enabling WDT31, set up so that it is paused in sleep mode (CONFIG register = 0x4) causes a current increase of ~1uA.

This seems like a large current increase for a single peripheral (which is paused in sleep mode). nRF52-based chips didn't show this type of increase from their WDT. Is this expected for the nRF54L15?

[Kenneth]

Hello,

Let me look into it and get back to you.

Kenneth

[Kenneth]

Hi,

I am not entirely sure about the ~1uA, but in terms of current consumption I can find:
https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/chapters/current_consumption/doc/current_consumption.html#ariaid-title13 
https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/wdt.html#ariaid-title23 

So it looks like the WDT will add about 2-3uA (first link), and that the added current is independent of whether it's running or paused (second link).

Kenneth