Power management- usuing external LFCLK

[Gili Elias]

Hi, I'm trying to reduce as much as I can the BLE current consumption in advertise mode and unfortunately I can't go under 1.6 mA. Can you please tell me what are the exact steps I should take to do that? What I want to do is to advertise with the defined interval on SYSTEM-ON base current with 16 kB RAM enabled. My current, as I understand it, should be around 2.6 uA, but I can't reach it.

I use an external Crystal LFCLK. How should I define the ble_stack_init? how should I define the timer_init and start_timer functions to use only in the LFCLK and not in HFCLK? For low current between advertises I use sd_app_evt_wait() function. Still, because of my stcak (probably) I can't reach the low current of 2.6 uA.

What's makes the current so high? What are the recommended settings to make the component work in minimum current?

Thanks.

[Gili Elias]

thanks, the original reply is useful. I will post a separate question if we run into problems.

Gili

[Ole Morten]

Great! If you found the answer useful, as I said I would be happy if you could click the "Accept as answer" button below it, to clear up this question. :-)