Seeed Studio XIAO nRF52840 (EU Version)

Description
Seeed Studio XIAO Series are diminutive development boards, sharing a similar hardware structure, where the size is literally thumb-sized. The code name ?XIAO? here represents its half feature ?Tiny?, and the other half will be ?Puissant?.
Seeed Studio XIAO nRF52840 is carrying wireless capability for the first time and it supports Bluetooth 5.0, also able to operate with?low power consumption. It will be your best microcontroller for Bluetooth applications.
The Seeed Studio XIAO nRF52840 is a compact, powerful development board that supports Bluetooth Low Energy (BLE) and native USB connectivity. Now available at Burk.pk, this board is ideal for developers working on IoT, wearables, BLE devices, and low-power embedded systems.
Despite its ultra-small size (just 21 x 17.5 mm), the XIAO nRF52840 packs serious performance. It features a Nordic nRF52840 SoC with a 32-bit ARM Cortex-M4 processor running at 64 MHz, making it suitable for real-time wireless applications.
Key Features:

Processor: ARM Cortex-M4, 64 MHz

Wireless: Bluetooth 5.0 LE

USB Type-C port for programming and data transfer

Flash Memory: 1 MB

RAM: 256 KB

Digital I/O Pins: 11 multifunctional GPIOs

Interfaces: I2C, SPI, UART, ADC, PWM

Ultra-low power consumption

Battery-friendly with integrated charging circuit

One major benefit of the Seeed Studio XIAO nRF52840 is its native support for Arduino, MicroPython, and CircuitPython, making it accessible to developers of all levels. It also supports the nRF Connect SDK, enabling advanced Bluetooth development.
Ideal Applications:

BLE-based wearables and smart bands

IoT sensor nodes and environmental monitors

Wireless input devices like keyboards or remotes

Battery-powered portable gadgets

USB HID projects (keyboard/mouse emulation)

Fitness trackers, step counters, or medical devices

You can power it via USB-C or external Li-ion/LiPo batteries. Plus, the board includes SWD pads for professional-level debugging. Its castellated holes also make it easy to surface-mount onto a custom PCB, perfect for final product integration.
Another highlight is its full Bluetooth 5.0 stack. It supports long-range, high-throughput, and low-latency Bluetooth communication. Whether you?re making a BLE beacon, a smart sensor, or a wireless controller, the XIAO nRF52840 delivers top-notch performance in a thumb-sized package.
Pinout Diagram of Seeed Studio XIAO BLE nRF52840:

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Applications:

Wearable devices
Wireless connect
Embedded machine learning projects
Perfect for mini Arduino projects
Tiny Machine Learning application

Features:?

Versatile Microcontroller:?Incorporate the?Nordic nRF52840?chip with FPU, operating up to 64 MHz, mounted multiple development ports, supported by Arduino / CircuitPython
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 ?A 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

Package Includes:

1 x Seeed Studio XIAO nRF52840
1 x Male Header
1 x Female Header