Seeed Studio XIAO nRF52840 Developer Board
Seeed Studio XIAO nRF52840 overview
The Seeed Studio XIAO nRF52840 is a Developer Board. Main ratings: Processor Nordic nRF52840, ARM® Cortex®-M4 with FPU runs up to 64 MHz; Wireless Bluetooth 5.0/NFC; On-chip Memory 1 MB flash and 256 kB RAM; Onboard Memory 2 MB QSPI flash. This page brings together the Seeed Studio XIAO nRF52840 pinout and key specifications, with the full datasheet PDF to preview below or download.
Seeed Studio XIAO Series are diminutive development boards, sharing a similar hardware structure, where the size is literally thumb-sized. Seeed Studio XIAO nRF52840 has an ultra-low power consumption of only 5 μA in the deep sleep mode, the embedded BQ25101 chip supports battery charge management which prolongs its use time. Moreover, Seeed Studio XIAO nRF52840 supports the USB Type-C interface which can supply power and download code. It also has rich On-chip Memory of 1 MB flash and 256 kB RAM, and an Onboard Memory of 2 MB QSPI flash.
Seeed Studio XIAO nRF52840 has 11 digital I/O that can be used as PWM pins and 6 analog I/O that can be used as ADC pins. It supports UART, IIC, and SPI all three common serial ports. 1 Reset button, 1 3-in-one LED, 1 Charge LED, and 1 Bluetooth antenna are on board, allowing developers to debug their code very easily.
Key specifications
Datasheet
Seeed Studio XIAO nRF52840 features
- Versatile Microcontroller: Incorporate the Nordic nRF52840 chip with FPU, operating up to 64 MHz, mounted multiple development ports, supported by Arduino / Circuit Python
- Wireless Capabilities: Implement Bluetooth 5.0, BLE functions with onboard antenna, also provide NFC connectivity
- Elaborate Power Design: Provide ultra-low power consumption as 5 μA in deep sleep mode while supporting lithium battery charge management
- Thumb-sized Design: 21 x 17.5mm, Seeed Studio XIAO series classic form-factor, suitable for wearable devices
- Perfect for Production: Breadboard-friendly & SMD design, no components on the back
Seeed Studio XIAO nRF52840 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | D0 | GPIO2/A0/P0 |
| 2 | D1 | GPIO3/A1/P0 |
| 3 | D2 | GPIO4/A2/P0 |
| 4 | D3 | GPIO5/A3/P0 |
| 5 | D4 | GPIO6/SDA/P0/A4 |
| 6 | D5 | GPIO7/SCL/P0/A5 |
| 7 | D6 | GPIO21/TX/P1.11 |
| 8 | D7 | GPIO20/RX/P1.12 |
| 9 | D8 | GPIO8/SCK/P1.13 |
| 10 | D9 | GPIO9/MISO/P1.14 |
| 11 | D10 | GPIO10/MOSI/P1.15 |
| 12 | 3.3V | 3.3V |
| 13 | GND | Ground pin |
| 14 | 5V | 5V Supply |
Seeed Studio XIAO nRF52840 specifications
| Processor | Nordic nRF52840, ARM® Cortex®-M4 with FPU runs up to 64 MHz |
|---|---|
| Wireless | Bluetooth 5.0/NFC |
| On-chip Memory | 1 MB flash and 256 kB RAM |
| Onboard Memory | 2 MB QSPI flash |
| Interface | 1xUART, 1xIIC, 1xSPI, 1xNFC, 1xSWD, 11xGPIO(PWM), 6xADC |
| Sensors | Onboard 6-axis IMU |
| Dimensions | 21 x 17.5mm |
| Power/Circuit operating voltage | 3.3V@200mA |
| Charging current | 50mA/100mA |
| Input voltage (VIN) | 5V |
| Standby power consumption | <5μA |
Seeed Studio XIAO nRF52840 applications
- Wearable devices
- Wireless connect
- Embedded machine learning projects
- Perfect for mini Arduino projects
- Tiny Machine Learning application
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