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Seeed Studio XIAO MG24 Sense with 78 MHz Cortex-M33, Matter, Thread, BLE 5.3 and 4 MB Onboard Flash
The Seeed Studio XIAO MG24 Sense is an ultra-low-power wireless development board designed for Matter, Thread, Bluetooth, TinyML, and battery-powered IoT applications. Built around the Silicon Labs EFR32MG24 SoC, it features a 32-bit Arm Cortex-M33 processor running at up to 78 MHz with DSP instructions, floating-point support, and an integrated Matrix Vector Processor for AI/ML acceleration. The board provides 256 KB RAM, up to 1536 KB internal Flash, and an additional 4 MB onboard Flash for application code and data storage.
Wireless connectivity includes Bluetooth Low Energy 5.3, Matter, OpenThread, Zigbee, Bluetooth Mesh, and proprietary 2.4 GHz communication. The Sense version also integrates an LSM6DS3TR-C 6-axis IMU and MSM381ACT001 analog microphone, enabling motion, posture, gesture, vibration, and audio-based TinyML applications without additional sensor modules. With typical ultra-low-power consumption down to 1.95 uA, lithium-battery charging, onboard and external antenna options, 19 digital/analogue-capable GPIOs, and a compact 21 x 17.8 mm XIAO form factor, it is well suited to portable and space-constrained wireless designs.
Key Features
- Silicon Labs EFR32MG24 SoC: Provides a high-performance wireless MCU platform for Matter, Thread, Zigbee, Bluetooth, and embedded AI applications.
- 78 MHz Arm Cortex-M33: 32-bit processor supports DSP instructions and floating-point operations for signal processing and embedded computation.
- AI/ML Hardware Accelerator: Integrated Matrix Vector Processor accelerates supported machine-learning and signal-processing workloads.
- Matter Support: Suitable for building interoperable smart-home and connected IoT devices using Matter.
- OpenThread Connectivity: Supports Thread-based low-power mesh networking for smart-home and IoT applications.
- Bluetooth LE 5.3: Provides low-power wireless communication for sensors, controllers, wearables, and connected devices.
- Zigbee Support: Enables compatible mesh-networking and home-automation applications.
- Bluetooth Mesh: Supports distributed Bluetooth-based control and sensor networks.
- 4 MB Onboard Flash: Adds external storage for firmware, models, application data, and embedded resources.
- 1536 KB Internal Flash: Provides integrated program memory within the EFR32MG24 SoC.
- 256 KB RAM: Supports wireless stacks, sensor processing, and embedded application workloads.
- 6-Axis IMU: Onboard LSM6DS3TR-C combines a 3-axis accelerometer and 3-axis gyroscope for motion, gesture, vibration, and orientation sensing.
- Analog MEMS Microphone: Integrated MSM381ACT001 microphone supports sound sensing, voice activity, and TinyML audio applications.
- Ultra-Low-Power Operation: Typical low-power consumption down to approximately 1.95 uA supports battery-powered devices.
- Lithium-Battery Charging: Built-in power-management circuitry supports rechargeable 3.7 V lithium-battery applications.
- 19 Digital GPIOs: Provides extensive digital I/O for sensors, actuators, LEDs, and peripheral devices.
- 19 Analogue-Capable Pins: Offers flexible analogue measurement capability through the EFR32MG24 peripheral system.
- Multiple Serial Interfaces: Supports I2C, UART, SPI, and other peripheral functions for external module integration.
- Onboard 2.4 GHz Antenna: Integrated ceramic antenna simplifies compact wireless designs.
- External U.FL Antenna Support: Allows an external antenna to be connected when improved antenna placement is required.
- Secure Vault Security: Includes hardware cryptographic acceleration, True Random Number Generator, Arm TrustZone, Secure Boot, and secure debugging features.
- Compact XIAO Form Factor: Measures only 21 x 17.8 mm for wearables, smart sensors, and space-constrained IoT products.
- Arduino IDE Support: Supported by the Silicon Labs Arduino Core for familiar embedded-development workflows.
- XIAO Add-On Compatibility: Works with compatible XIAO expansion boards and modules including displays, sensors, CAN, LoRa, and Grove accessories.
Applications
- Matter smart-home devices
- Thread sensor nodes
- Zigbee home automation
- Bluetooth Low Energy devices
- Battery-powered IoT sensors
- Smart locks
- Smart lighting
- Remote controls
- Environmental monitoring
- Gesture-recognition systems
- Posture detection
- TinyML applications
- Voice-command prototypes
- Motion detection
- Wearable electronics
- Smart sensor nodes
- Embedded edge AI
- Home-automation controllers
- Portable monitoring devices
- Low-power wireless products
Hardware Overview
Onboard
Pinout
Package Includes:
- Seeed Studio XIAO MG24 Sensex1
- 7 Pin header x2
