.. zephyr:board:: xiao_nrf54l15

Overview

Seeed Studio XIAO nRF54L15_ is a compact, high-performance development board featuring the cutting-edge Nordic nRF54L15 chip. This next-generation SoC integrates an ultra-low power multiprotocol 2.4 GHz radio and an MCU with a 128 MHz Arm® Cortex®-M33 processor and an Arm® Cortex®-M0+ for advanced power management. It offers scalable memory up to 1.5 MB NVM and 256 KB RAM. Designed for exceptional ultra-low power consumption, it significantly extends battery life. Its robust radio supports Bluetooth® 6.0 (including Channel Sounding), Matter, Thread, Zigbee, and a high-throughput 2.4 GHz proprietary mode (up to 4 Mbps).

The board includes a comprehensive set of peripherals, an integrated 128 MHz RISC-V coprocessor, and advanced security features like TrustZone® isolation and cryptographic engine protection. With built-in lithium battery management, XIAO nRF54L15 is ideal for compact, secure, and energy-efficient IoT solutions such as smart wearables, industrial sensors, and advanced human-machine interfaces.

Hardware

128 MHz Arm® Cortex®-M33 processor
Scalable memory configurations up to 1.5 MB NVM and up to 256 KB RAM
Multiprotocol 2.4 GHz radio supporting Bluetooth Low Energy, 802.15.4-2020, and 2.4 GHz proprietary modes (up to 4 Mbps)
Comprehensive set of peripherals including new Global RTC available in System OFF, 14-bit ADC, and high-speed serial interfaces
128 MHz RISC-V coprocessor
Advanced security including TrustZone® isolation, tamper detection, and cryptographic engine side-channel leakage protection

For more information about the nRF54L15 SoC and XIAO nRF54L15 board, refer to these documents:

nRF54L15 Website_
nRF54L15 Datasheet_
XIAO nRF54L15 Wiki_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

In the following table, the column Name contains Pin names. For example, P2_0 means Pin number 0 on PORT2, as used in the board's datasheets and manuals.

+-------+-------------+------------------+ | Name | Function | Usage | +=======+=============+==================+ | P2_0 | GPIO | LED0 | +-------+-------------+------------------+ | P1_9 | USART20_TX | UART Console TX | +-------+-------------+------------------+ | P1_8 | USART20_RX | UART Console RX | +-------+-------------+------------------+

Programming and Debugging

.. zephyr:board-supported-runners::

The XIAO nRF54L15 contains a SAMD11 with CMSIS-DAP, allowing flashing, debugging, logging, etc. over the USB port.

Flashing

Connect the XIAO nRF54L15 board to your host computer using the USB port. A USB CDC ACM serial port should appear on the host, that can be used to view logs from the flashed application.

Here is an example for the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: xiao_nrf54l15/nrf54l15/cpuapp :goals: flash

Open a serial terminal (minicom, putty, etc.) connecting to the UCB CDC ACM serial port.

Reset the board and you should see the following message in the terminal:

.. code-block:: console

Hello World! xiao_nrf54l15/nrf54l15/cpuapp

.. _Seeed Studio XIAO nRF54L15: https://www.seeedstudio.com/XIAO-nRF54L15-Sense-p-6494

.. _XIAO nRF54L15 Wiki: https://wiki.seeedstudio.com/xiao_nrf54l15_sense_getting_started

.. _nRF54L15 Website: https://www.nordicsemi.com/Products/nRF54L15

.. _nRF54L15 Datasheet: https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/keyfeatures_html5.html

.. _OpenOCD Arduino: https://github.com/arduino/OpenOCD