The Seeed Studio XIAO nRF52840 Plus is a compact Bluetooth development board built around the Nordic nRF52840 chipset. This Plus variant builds on the original XIAO nRF52840 by introducing an updated castellated layout and additional back-side pads, increasing the total GPIO count to 20 for use in more demanding Bluetooth-based projects.
It retains all the core features of the standard version, including USB-C power/programming, integrated Li-ion battery charging, Bluetooth 5.0, NFC capability, low power consumption, and compatibility with Arduino, MicroPython, and CircuitPython. The board is ideal for compact wireless devices requiring high performance and extended I/O support through SMD integration.
Please note that Seeed XIAO Plus boards don’t come with pin headers as it’s designed for SMD board-to-board soldering, however we sell a set of XIAO headers in the store if you need them.
Features
- Nordic nRF52840 SoC with FPU support
- Bluetooth 5.0 and NFC connectivity
- 20 total GPIOs (with added rear SMD castellations)
- Ultra-low power design
- Compatible with Arduino, MicroPython, and CircuitPython
- Designed for compact Bluetooth projects
Specifications
| Processor | Nordic nRF52840, ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz |
| Wireless Connectivity | Bluetooth 5.0 / BLE / NFC |
| Memory | 256KB RAM, 1MB Flash, 2MB onboard Flash |
| Interfaces | 1x I2C, 2x UART, 2x SPI, 1x I2S |
| PWM/Analog Pins | 20 / 6 |
| Onboard Buttons | Reset Button |
| Onboard LEDs | 3-in-one LED / Charge LED |
| Battery Charge Chip | BQ25101 |
| Programming Languages | Arduino / MicroPython / CircuitPython |
| Product number | Seeed 102010672 |
Resources
- Getting Started with Seeed Studio XIAO nRF52840 Series
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Schematic
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Nordic nRF52840 Data Sheet
Pinout

Package Contents
- 1 x Seeed XIAO nRF52840 Plus
Headers are not included



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