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:

Supported Features

The xiao_nrf54l15 board supports the hardware features listed below.

on-chip / on-board
Feature integrated in the SoC / present on the board.
2 / 2
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

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

The xiao_nrf54l15 board supports the runners and associated west commands listed below.

flash debug

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 Hello World application.

# From the root of the zephyr repository
west build -b xiao_nrf54l15/nrf54l15/cpuapp samples/hello_world
west 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:

Hello World! xiao_nrf54l15/nrf54l15/cpuapp