NRF52832 BLE NUS current consumption too high

[rc]

Hi:

     I am using NRF52832    SDK14.1.0   S132   BLE_APP_NUS 

Power supply:  3.3V 

HW resource usage: 6 channel GPIOTE / 6 button pull up / 6 gpio input pull up / usiing external HFCLK / internal LFCLK/  TIMER2 TIMER3 using/  about 7 app timer on

pull up resistor is about 100K 

-Number-	-power source-	-power consumption-	-system-status-
1	LDO	2.1mA	Low power mode
2	DC-DC	1.5mA	Low power mode
3	LDO	<100uA	sleep

I want to know how to decrease power consumption when in low power mode less than 200uA ?

( Note: when I use NRF51822  SDK6.1.0   ble_app_uart   the current is only 250uA when system on, WTF! why NRF52832 is so high? )

[Susheel Nuguru]

If the TIMER is configured to run, then you cannot achieve 200uA as TIMERs need HFCLK to be running.

If you stop the TIMERs before going to sleep and stop all the peripherals that need HFCLK, then you can go to low power consumption. 

Apart from that it is hard to give you recommendations, without knowing your code modifications and what you are trying to do with your product.