Nordic Semiconductor nRF52 DK - Block Diagram; Power Supply

Hardware description
4.2 Block diagram
The block diagram illustrates the nRF52 DK functional architecture.
External supply
Current
measurement
USB
Battery
Buttons
Voltage regulator
LEDs
GPIO
nRF52832
PCB
Antenna
Interface MCU
VBUS
USB sense
Data
Osc
32.768 kHz
IF Boot/Reset
UART
SWD
VCC_nRF
Osc
32 MHz
Debug inDebug out
Power switch
Power switch
Matching
network
NFC
antenna
SWF switch/
RF connector
I/O
expander
Debouncing
filter
Switch
Switch
Figure 5: Block diagram
4.3 Power supply
The nRF52 DK has three power options: USB (5 V), external power supply (1.7–3.6 V), and coin cell battery.
Figure 6: Power supply options (front)
4397_500
10