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Seeed Studio XIAO nRF54L15 Sense with Bluetooth 6.0, Matter, Thread, 6-Axis IMU and Digital Microphone
The Seeed Studio XIAO nRF54L15 Sense is a compact, ultra-low-power wireless development board based on Nordic Semiconductor's nRF54L15 SoC. It combines a 128 MHz Arm Cortex-M33 processor with FPU and DSP support, a 128 MHz RISC-V coprocessor, 1.5 MB NVM, and 256 KB RAM for connected sensing, wearable, industrial IoT, and edge-processing applications. Its multiprotocol 2.4 GHz radio supports Bluetooth Low Energy 6.0 with Channel Sounding, Matter, Thread, Zigbee, Amazon Sidewalk, NFC, and proprietary wireless modes up to 4 Mbps.
The Sense version adds an onboard LSM6DS3TR-C 6-axis IMU and MSM261DGT006 digital microphone for acceleration, angular-motion, gesture, vibration, and audio sensing. Integrated lithium-battery management, USB Type-C, a 14-bit ADC, Global RTC, selectable onboard/external antenna support, and low-power System OFF operation make the board well suited to battery-powered IoT products. Developers can work with Nordic nRF Connect SDK and Zephyr-based PlatformIO workflows, with additional Arduino and MicroPython support available through current Seeed Studio documentation.
Key Features
- Nordic nRF54L15 SoC: Next-generation multiprotocol wireless MCU designed for low-power connected products and embedded sensing.
- 128 MHz Arm Cortex-M33: Provides high-performance application processing with FPU and DSP instruction support.
- 128 MHz RISC-V Coprocessor: Integrated FLPR coprocessor supports efficient peripheral and low-level processing workloads.
- 1.5 MB NVM: Provides substantial non-volatile program and application storage for embedded wireless systems.
- 256 KB RAM: Supports communication stacks, sensor processing, and real-time application workloads.
- Bluetooth Low Energy 6.0: Supports modern BLE connectivity for wearables, sensors, controllers, and connected devices.
- Bluetooth Channel Sounding: Enables supported distance-measurement and proximity applications using Bluetooth 6.0 Channel Sounding.
- Matter Support: Suitable for interoperable smart-home and IoT device development.
- Thread Connectivity: Supports low-power IPv6 mesh-network applications based on IEEE 802.15.4.
- Zigbee Support: Enables compatible home-automation and sensor-network applications.
- Amazon Sidewalk Support: Supports compatible long-range and neighbourhood IoT development workflows.
- NFC Connectivity: Provides NFC capability for proximity, provisioning, and compatible identification applications.
- Proprietary 2.4 GHz Modes: Supports ESB and proprietary wireless communication at data rates up to 4 Mbps.
- LSM6DS3TR-C 6-Axis IMU: Combines a 3-axis accelerometer and 3-axis gyroscope for motion, orientation, vibration, and gesture sensing.
- MSM261DGT006 Digital Microphone: Integrated microphone supports voice, sound, acoustic-event, and TinyML applications.
- 14-Bit ADC: Provides high-resolution analogue measurement for external sensors and embedded instrumentation.
- Global RTC: Real-time clock can remain available in supported low-power operating modes.
- 16 GPIO-Capable Digital Pins: Current board pin map exposes D0-D15 for flexible peripheral and sensor integration.
- Dual I2C Interfaces: Provides 2 I2C buses for connecting displays, sensors, and external peripherals.
- SPI and UART Support: Standard digital interfaces simplify embedded peripheral integration.
- +8 dBm TX Power: Provides configurable 2.4 GHz radio transmission for supported wireless protocols.
- -96 dBm RX Sensitivity: Supports reliable receiving performance under suitable RF conditions.
- Integrated Lithium-Battery Management: Supports rechargeable 3.7 V lithium-battery-powered applications.
- USB Type-C: Provides convenient power, programming, and development connectivity.
- Onboard and External Antenna Support: Allows switching between the integrated antenna and an external antenna connection.
- Advanced Hardware Security: Includes Arm TrustZone isolation, tamper detection, and cryptographic-engine protection.
- Wide Operating Temperature: Specified for operation from -40°C to +105°C.
- Compact XIAO Platform: Small form factor is suitable for wearables, portable sensors, and space-constrained embedded designs.
Applications
- Wearable devices
- Fitness trackers
- Gesture-control devices
- Motion-sensing systems
- Audio-event detection
- TinyML applications
- Matter smart-home devices
- Thread sensor nodes
- Zigbee automation devices
- Bluetooth 6.0 applications
- Bluetooth Channel Sounding projects
- Proximity sensing
- Industrial IoT sensors
- Predictive-maintenance nodes
- Condition monitoring
- Secure wireless telemetry
- Battery-powered environmental sensors
- Smart locks and controllers
- Multi-protocol IoT development
- Advanced wireless prototyping
Hardware Overview
PinOut
Package Includes:
- Seeed Studio XIAO nRF54L15 Sensex1
- 7-Pin Header (2.54mm)x2
