NUCLEO-WL55JC:STM32WL LoRa Development Board for LPWAN & IoT Prototyping
Rapidly prototype LoRaWAN, Sigfox, and LPWAN devices with the NUCLEO-WL55JC. Features a dual Cortex-M4/M0+ STM32WL MCU & ultra-low-power radio.
Important Information:
Rapidly prototype LoRaWAN, Sigfox, and LPWAN devices with the NUCLEO-WL55JC. Features a dual Cortex-M4/M0+ STM32WL MCU & ultra-low-power radio.

The NUCLEO-WL55JC is a feature-rich Nucleo-64 development board from STMicroelectronics, designed to accelerate prototyping and development with the STM32WL55JC microcontroller. This MCU integrates a dual-core Arm® Cortex®-M4 and Cortex®-M0+ architecture, offering a powerful and ultra-low-power platform for LPWAN (Low-Power Wide-Area Network) applications. Supporting a wide frequency range from 150 MHz to 960 MHz, the board enables developers to build solutions using LoRa®, (G)FSK, (G)MSK, and BPSK modulations, making it ideal for LoRaWAN®, Sigfox™, wM-Bus, and other proprietary protocols.
The NUCLEO-WL55JC board includes Arduino® Uno V3 and ST morpho extension headers, allowing seamless integration with a wide range of shields and expansion modules. It features onboard USB with Micro-B, MIPI® debug connector, and is delivered with an SMA antenna for RF connectivity. The board also integrates the STLINK-V3E debugger/programmer, eliminating the need for an external probe and supporting USB re-enumeration for mass storage, virtual COM port, and debug functionalities.
The NUCLEO-WL55JC development board is available in two options: NUCLEO-WL55JC1 and NUCLEO-WL55JC2. NUCLEO-WL55JC1 is dedicated for high frequency band, from 865 to 928 MHz and NUCLEO-WL55JC2 is dedicated for low frequency band, from 433 to 510 MHz.
Data Brief ► About STMicroelectronics ►
Developers benefit from the STM32CubeWL MCU Package, which includes a full set of HAL and low-layer APIs, middleware components like LoRaWAN® and Sigfox™ stacks, and numerous code examples. The board is compatible with popular IDEs such as STM32CubeIDE, IAR Embedded Workbench®, and Keil MDK-ARM, ensuring a smooth development experience. This makes the NUCLEO-WL55JC a go-to platform for rapid prototyping of wireless IoT end nodes.
With its ultra-low-power design, multi-protocol radio support, and secure development environment, the NUCLEO-WL55JC is perfectly suited for smart metering, asset tracking, smart agriculture, building automation, and predictive maintenance. Its open hardware platform and extensive documentation make it an excellent choice for developers looking to bring robust LPWAN solutions to market quickly and efficiently.

Avnet has worked with STMicroelectronics to create an out-of-box demonstration showing how quickly and easily OEMs can connect STMicroelectronics product to a cloud service using Avnet's /IOTCONNECT™ solution acceleration software.
Resources
/IOTCONNECT Free Trial: Click Here
• STM32WL55JC microcontroller multiprotocol LPWAN dual-core 32-bit (Arm® Cortex®-M4/M0+ at 48 MHz) in UFBGA73 package featuring:
– Ultra-low-power MCU
– RF transceiver (150 to 960 MHz frequency range) supporting LoRa®, (G)FSK, (G)MSK, and BPSK modulations
– 256-Kbyte flash memory and 64-Kbyte SRAM
• Three user LEDs
• Three user and one reset push-buttons
• 32.768 kHz LSE crystal oscillator
• 32 MHz HSE on-board oscillator
• Board connectors:
– USB with Micro-B
– MIPI® debug connector
– ARDUINO® Uno V3 expansion connector
– ST morpho extension pin headers for full access to all STM32WL I/Os
• Delivered with SMA antenna
• Flexible power-supply options: ST-LINK USB VBUS, USB connector, or external sources
• On-board STLINK-V3 debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port
• Comprehensive free software libraries and examples available with the STM32CubeWL MCU Package
• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE
• Suitable for rapid prototyping of end nodes based on LoRaWAN®, Sigfox™, wM-Bus, and many other proprietary protocols
• Fully open hardware platform

NUCLEO-WL55JC Development Board Block Diagram
Published in Nov 25.