Seeed XIAO nRF52840 Plus

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
• Schematic
• Nordic nRF52840 Data Sheet

Pinout

Package Contents

• 1 x Seeed XIAO nRF52840 Plus