The Seeed Studio XIAO MG24 is a tiny, low-power wireless development board based on the Silicon Labs EFR32MG24 SoC. It combines a modern 32-bit Arm Cortex-M33 processor with 2.4Â GHz wireless connectivity, making it a very interesting XIAO module for compact IoT, smart home, Matter, Thread, Bluetooth, and battery-powered projects.
Like all boards in the Seeed Studio XIAO family, the XIAO MG24 uses an ultra-compact 21 × 17.8 mm form factor while still providing a surprisingly rich set of GPIO and communication interfaces. It is breadboard-friendly, USB-C programmable, and small enough for embedded projects where a full-size development board would be too large.
The onboard Silicon Labs EFR32MG24 features a 78Â MHz Arm Cortex-M33 core with DSP instructions, floating-point support, and a built-in AI/ML hardware accelerator. This gives the module much more processing power than classic entry-level microcontroller boards while keeping power consumption very low.
The XIAO MG24 supports modern 2.4Â GHz wireless protocols including Matter over Thread, OpenThread, Zigbee, Bluetooth Low Energy 5.3, and Bluetooth mesh. This makes it especially useful for smart home devices, wireless sensors, battery-powered control nodes, and experimental Matter/Thread projects.
Key features
- Silicon Labs EFR32MG24 wireless SoC
- Arm Cortex-M33 32-bit processor, up to 78Â MHz
- DSP instructions and floating-point support
- Built-in AI/ML hardware accelerator
- 256Â KB RAM
- 1536Â KB internal Flash plus 4Â MB onboard Flash
- 2.4Â GHz wireless connectivity
- Supports Matter over Thread, OpenThread, Zigbee, Bluetooth LE 5.3, and Bluetooth mesh
- Up to +19.5Â dBm transmit power
- Receiver sensitivity down to -105.4Â dBm
- 19 digital/analog-capable GPIO pins
- PWM support on available GPIO pins
- I²C, UART, and SPI interfaces
- Hardware security features including cryptographic acceleration, true random number generator, Arm TrustZone, secure boot, and secure debug unlock
- Onboard user LED and power LED
- Reset button
- USB-C connector for power and programming
- Battery charging circuit for rechargeable 3.7Â V lithium battery projects
- Ultra-compact XIAO form factor: approx. 21 × 17.8 mm
Technical specifications
| MCU / SoC | Silicon Labs EFR32MG24 |
| CPU | Arm Cortex-M33 32-bit processor, up to 78Â MHz |
| RAM | 256Â KB |
| Flash | 1536Â KB internal Flash + 4Â MB onboard Flash |
| Wireless | 2.4Â GHz multi-protocol radio |
| Supported protocols | Matter over Thread, OpenThread, Zigbee, Bluetooth LE 5.3, Bluetooth mesh |
| GPIO | 19 digital/analog-capable GPIO pins |
| PWM | Available on GPIO pins |
| Interfaces | I²C, 2× UART, 2× SPI |
| ADC | 12-bit ADC, up to 1Â Msps |
| Security | Cryptographic acceleration, true random number generator, Arm TrustZone, secure boot, secure debug unlock |
| Antenna | Onboard 2.4Â GHz ceramic antenna |
| Typical low-power current | Approx. 1.95 µA |
| Typical sleep current | Approx. 1.91Â mA |
| Typical normal operating current | Approx. 6.71Â mA |
| Power input | 5Â V via USB-C, or rechargeable 3.7Â V lithium battery via battery pads |
| Logic level | 3.3Â V |
| Operating temperature | -20 °C to +70 °C |
| Dimensions | Approx. 21 × 17.8 mm |
Important: The XIAO MG24 is a 3.3Â V logic device. Do not connect 5Â V signals directly to the GPIO pins.
This module can be used with our CANABLOX® development system. A suitable XIAO adapter board, such as CX-XIAO-S or CX-XIAO-MH, is required. It can also be added to our CANADUINO® PLC-300 V2 Programmable Logic Controller DIY kit to provide extended functionality and wireless connection.
For pinout, Arduino setup, battery usage, wireless examples, schematics, and additional documentation, please refer to the official Seeed Studio XIAO MG24 documentation:
