NRF52840 Eval Kit User Manual
Vision: V1.0.1 Date: 2019.01.19 6 / 72
1. Arduino headers: for connecting
Arduino shields
2. Raspberry Pi GPIO header: for
connecting Raspberry Pi HATs
3. USB TO UART interface
4. USB port: the USB port of nRF52840
5. 4PIN SWD debugging interface:
for connecting ARM Debugger to
program / debug
6. 3.3V/5V power input/output:
provides power output OR powered
from external power supply
7. Core52840: nRF52840 core module
8. CP2102: USB TO UART converter
9. Buzzer
10. RT9193-33: 3.3V voltage regulator
11. Optical sensor
12. Keys: RESET and USER KEY
13. LEDs
PWR: power indicator
RXD/TXD: nRF52840 UART RX/TX
indicator
LED1~LED4: USER LEDs
14. Power switch
USB: powered from USB connection
Battery: powered from CR2032
battery
15. NFC antenna connector
16. TF card slot
17. CR2032 battery holder
18. Jumpers
Short the jumpers: connect the
onboard peripherals to I/Os in
example code
Open the jumpers: connect to
custom I/Os via jumper wires
19. Current testing pads: 0Ω resistor is
soldered by default, remove the
resistor to test current of the board
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