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Board overview
nRF52840 DK
Nordic Semiconductor · nRF52
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Showing 30 of 30 pins
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
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Mapped source · nRF52840 DK connector/Arduino header pin mapOfficial- Models the Arduino Uno R3-compatible headers; labels show the Arduino name and the nRF52840 GPIO it connects to.
- nRF52840 GPIO is 3.3 V and not 5 V tolerant; analog inputs A0-A5 map to AIN1, AIN2, AIN4-AIN7.
- D14 (P0.26) and D15 (P0.27) are the default I2C SDA/SCL pins; many P0 lines are shared with onboard LEDs, buttons, and QSPI flash.
All 30 pins
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| Digital (P1/P3/P4) | ||||
| 1 | UART | UART | P1.01 | |
| 2 | UART | UART | P1.02 | |
| 3 | GPIO | P1.03 | ||
| 4 | GPIO | P1.04 | ||
| 5 | GPIO | P1.05 | ||
| 6 | GPIO | P1.06 | ||
| 7 | GPIO | P1.07 | ||
| 8 | GPIO | P1.08 | ||
| 9 | GPIO | P1.10 | ||
| 10 | GPIO | P1.11 | ||
| 11 | SPI | SPI | P1.12 | |
| 12 | SPI | SPI | P1.13 | |
| 13 | SPI | SPI | P1.14 | |
| 14 | SPI | SPI | P1.15 | |
| 15 | I2C | I2C | P0.26 | |
| 16 | I2C | I2C | P0.27 | |
| Analog / Power (P2/P6/P24) | ||||
| 16 | ADC | P0.03 / AIN1 | ||
| 17 | ADC | P0.04 / AIN2 | ||
| 18 | ADC | P0.28 / AIN4 | ||
| 19 | ADC | P0.29 / AIN5 | ||
| 20 | ADC | P0.30 / AIN6 | ||
| 21 | ADC | P0.31 / AIN7 | ||
| 22 | Power | VDD | Board logic supply (3.3 V by default). | |
| 23 | Power | VDDNRF | ||
| 24 | Power | 5V | VDD5V | |
| 25 | Power | VIN | ||
| 26 | Power | 3V3 | ||
| 27 | Ground | GND | ||
| 28 | System | P0.18 | ||
| 29 | Power | IOREF | ||