Hello I'm trying to get the lower consumption with this EvK in power off mode. I was expecting around 0.5uA but the minimum I get is 1.8uA ~ 2uA.
The measure has been done with a nRF Power Profiler and an SMU Keithley 2450.
I've used the "ram_retention" example. (nRF5_SDK_17.1.0_ddde560) but modifying the main function to go directly to power off mode:
int main(void)
{
bsp_board_init(BSP_INIT_LEDS);
bsp_board_led_on(READY_PIN_NUMBER);
nrf_delay_ms(1000);
// Enter System OFF and wait for wake up from GPIO detect signal.
NRF_POWER->SYSTEMOFF = 0x1;
// Use data synchronization barrier and a delay to ensure that no failure
// indication occurs before System OFF is actually entered.
__DSB();
__NOP();
// This code will only be reached if System OFF did not work and will trigger a hard-fault which will
// be handled in HardFault_Handler(). If wake the up condition is already active while System OFF is triggered,
// then the system will go to System OFF and wake up immediately with a System RESET.
display_failure();
}
I've tested using Keil uVision, without softdevice using these ROM, RAM addresses and directives :
- IROM1: Start: 0x0 / Size: 0x30000 // IRAM1: Start: 0x20000000 / Size: 0x6000
- BOARD_PCA10040 BSP_DEFINES_ONLY CONFIG_GPIO_AS_PINRESET FLOAT_ABI_SOFT NRF52 NRF52811_XXAA NRF52_PAN_74 __HEAP_SIZE=8192 __STACK_SIZE=8192
- --cpreproc_opts=-DBOARD_PCA10040,-DBSP_DEFINES_ONLY,-DCONFIG_GPIO_AS_PINRESET,-DFLOAT_ABI_SOFT,-DNRF52,-DNRF52811_XXAA,-DNRF52_PAN_74,-D__HEAP_SIZE=8192,-D__STACK_SIZE=8192
I've also tested with a softdevice (s112 - 7.2.0) using these ROM, RAM addresses and directives :
- IROM1: Start: 0x19000 / Size: 0x17000 // IRAM1: Start: 0x20001A50 / Size: 0x45B0
- BOARD_PCA10040 BSP_DEFINES_ONLY CONFIG_GPIO_AS_PINRESET FLOAT_ABI_SOFT NRF52 NRF52811_XXAA NRF52_PAN_74 NRF_SD_BLE_API_VERSION=7 S112 SOFTDEVICE_PRESENT __HEAP_SIZE=2048 __STACK_SIZE=2048
- --cpreproc_opts=-DBOARD_PCA10040,-DBSP_DEFINES_ONLY,-DCONFIG_GPIO_AS_PINRESET,-DFLOAT_ABI_SOFT,-DNRF52,-DNRF52811_XXAA,-DNRF52_PAN_74,-D__HEAP_SIZE=2048,-D__STACK_SIZE=2048
Here some screenshots from the Power Profiler Kit:
Thanks in advance 
