startup current nRF52810

[kizhimon]

Hi,

SDK 17.0.2

I notice a startup current sequence (shown below) which is consuming around 8.3 uJ. I would like to know what operation on startup is causing this surge ?

  

[kizhimon]

Thank you for your answer.

My mcu will be switching on and off too often, I would like to know if there is a way to reduce this spike.

[awneil]

The decoupling capacitors should remain charged - so that peak should not recur.

Remember to choose low-leakage capacitors.

There is always a tradeoff between putting a processor more deeply to "sleep" and the time & energy it then takes to wake it up again; this applies to any system - not just nRF.

[kizhimon]

Thank you