This is the pre-soldered version of Seeed Studio XIAO nRF54L15, which is a powerful yet compact development board built around Nordic's nRF54L15 SoC, featuring a 128 MHz Arm Cortex-M33 core with 1.5 MB NVM. This thumb-sized board excels in modern IoT applications with comprehensive wireless connectivity including BLE 6.0, Matter, Thread, Zigbee, and Amazon Sidewalk protocols. With ultra-low power consumption, it's ideal for battery-powered IoT devices. The tiny board offers 16 GPIOs, USB Type-C interface, and onboard battery charging capabilities. Enhanced security features ensure robust protection for IoT deployments. Developers can leverage the Nordic nRF Connect SDK and PlatformIO with Zephyr RTOS support for efficient development workflows.
- Powerful SoC with Advanced Connectivity & Security
XIAO nRF54L15 (Pre-Soldered) is built on Nordic's nRF54L15 SoC with a 128 MHz Arm Cortex-M33 core (1.5 MB NVM) and dedicated RISC-V security coprocessor. This dev board supports multiple wireless protocols including BLE 6.0, Matter, Thread, and Zigbee (IEEE 802.15.4-2020). It also features new 4 Mbps mode for proprietary 2.4 GHz protocols. And it's compatible with major ecosystems like Amazon Sidewalk, Apple Find My, and Google Find My Device through nRF Connect SDK. Comprehensive security features include secure boot, secure firmware updates, secure storage, TrustZone-enabled trusted execution environment, cryptographic acceleration with side-channel protection, and tamper detection, ensuring robust protection for IoT deployments.
- Ultra-Low Power Efficiency
XIAO nRF54L15 (Pre-Soldered) is optimized for long-life battery-powered applications, leveraging the Nordic nRF54L15 SoC's industry-leading efficiency (0.6uA in the chip's System OFF mode) and an integrated battery charging circuit. Final board-level power consumption data is currently being verified for accuracy and will be announced soon.
- Streamlined Development Experience
Full support for Nordic nRF Connect SDK and PlatformIO (Zephyr) enables efficient embedded development workflows. (Note: Arduino IDE is not currently supported)
- Solder-Free for Instant Creation
The pre-soldered headers mean you can start creating immediately - just unbox and plug into your breadboard. No soldering iron, no waiting, no hassle. Perfect for rapid prototyping, educational workshops, beginner-friendly projects, and time-sensitive development. Because great ideas shouldn't wait for solder to cool.
Product Name | Seeed Studio XIAO nRF54L15 (Pre-Soldered) | Seeed Studio XIAO nRF54L15 Sense (Pre-Soldered) | Seeed Studio XIAO nRF52840 (Pre-Soldered) | Seeed Studio XIAO nRF52840 Sense (Pre-Soldered) |
Chipset | ||||
Processor | Arm® Cortex®-M33, 128 MHz | ARM®Cortex®-M4 32-bit processor with FPU, 64 MHz | ||
RISC-V,128 MHz （Coprocessor） | ||||
RAM | 256 KB | 256KB | ||
Flash | 1.5 MB Non-volatile Memory (NVM) | 1MB internal Flash + 2MB external Flash | ||
Interface | GPIO（PWM） Pin x16 Digital Pin x16 Analog Pin x6 I2C x2 UART x1 SPI x2 | GPIO（PWM） Pin x14 Digital Pin x14 Analog Pin x6 I2C x1 UART x1 SPI x2 | GPIO Pin（PWM） x11 Digital Pin x11 Analog Pin x6I2C x1 UART x1 SPI x1 PWM x11 | |
Onboard | User LED (1 Color) x1 Charge LED (Battery Charging Indicator) x1 Reset Button x1 User Button x1 Onboard Ceramic Antenna x1 IPEX4 Connector (for external antenna) x1 | User LED (3 Colors) x1 Charge LED (Battery Charging Indicator) x1 BlueTooth Antenna x1 Reset Button x1 | ||
/ | 6-Axis IMU x1 PDM Microphone x1 | / | 6-axis IMU x1 PDM Microphone x1 | |
Wireless Connectivity | Bluetooth LE 6.0（include Channel Sounding） NFC Thread Zigbee Matter Amazon Sidewalk proprietary 2.4 GHz protocols | Bluetooth LE 5.4 NFC Thread Zigbee Matter proprietary 2.4 GHz protocols | ||
Power | Input Voltage (Type-C): 5V Operating Voltage: 3.3V | Input Voltage (Type-C): 5V Operating Voltage: 3.3V | ||
Low Power Mode | The test results will be finalized soon. Please stay tuned. | 5μA | ||
Software Compatibility | Nordic nRF Connect SDK，PlatformIO (Zephyr) | Arduino IDE, PlatformIO, MicroPython, CircuitPython, Zephyr | ||
Working Temperature | -40°C to 105°C | -40 to 85°C | ||
Dimensions | 21 x 17.8mm | |||
Varients | The 3PCS Pack and Pre-Soldered Varients will be available soon. Stay tuned. | -XIAO nRF52840 (Pre-Soldered) -XIAO nRF52840 (3PCs) | -XIAO nRF52840 Sense (Pre-Soldered) -XIAO nRF52840 Sense (3PCs)
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- FRONT
- BACK
- PinOut
- Next-Gen Wearables
Create compact health trackers with long battery life or develop secure wearable payment solutions utilizing its integrated NFC and advanced security features.
- Secure Smart Home Hubs
Build a secure and reliable Matter-Thread border router or a multi-protocol bridge that unifies various smart home devices under one trustworthy network.
- Industrial IoT (IIoT) Sensors
Develop intelligent industrial sensors that perform on-device TinyML for predictive maintenance, while ensuring data integrity and device security with its hardware-level protection.
- Advanced Prototyping
Function as a versatile developer tool for debugging multi-protocol networks or rapidly creating proof-of-concept designs for secure, low-power wireless products.
- Seeed Studio XIAO nRF54L15 Schematic
- Seeed Studio XIAO nRF54L15 KiCAD Libraries
- Seeed Studio XIAO nRF54L15 Dimension in DXF
- Seeed Studio XIAO nRF54L15 pinout sheet
Seeed Studio XIAO nRF54L15(Pre-Soldered) | X1 |
| HSCODE | 8543709990 |
| USHSCODE | 8517180050 |
| UPC | |
| EUHSCODE | 8543709099 |
| COO | CHINA |
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