Streamline your IoT designs with low-power STM32WL3 MCUs
Comprehensive tools and resources for STM32WL3x series development
Comprehensive tools and resources for STM32WL3x series development
The one-chip STM32WL3x wireless MCU series is supported by a comprehensive development suite designed to accelerate the time-to-market of LPWAN edge devices. The STM32Cube ecosystem offers tools for firmware development, code generation, programming, monitoring, and RF testing.
This ecosystem accelerates RF design with 8 RF integrated passive devices (IPDs) and pre-certified reference designs, ensuring optimal performance and quicker market entry.
STM32WL33x Metering line
Ideal for water and gas meters, heat cost allocators, and smart city infrastructure.
- Flash up to 256 KB
- Main radio + WKUP radio
- Serial/RX+TX
- SPI/UART
- I2C/ADC
- LCD/LCSC/COMP/DAC
STM32WL31x IoT line
Ideal for smart homes, asset tracking, and alarm systems
- Flash up to 128 KB
- Main radio
- Serial/RX+TX
- SPI/UART
- I2C/ADC
STM32WL30x Modem line
Ideal to be used as an open network coprocessor.
- Flash up to 128 KB
- Main radio
- Serial/RX+TX
- SPI/UART
Key benefits
Enables longer battery lifetime
• Extended device runtime with low-power radio (5.6 mA RX, 8 mA TX)
• Always-on monitoring with minimal drain via autonomous wake-up receiver (4 µA)
• Enables long deployments with RAM retention using MCU low-power mode (910 nA)
Flexible & multi-modulation support
• Reduced power and CPU load via modulation, IQ interface, and hardware packet handler
• Easy worldwide deployment with support for global bands (413–479 MHz, 826–958 MHz)
• Long-range, reliable connectivity through 169 MHz band (159–185 MHz)
Reduces design complexity
• Lower BOM costs through high integration
• Simplified hardware with SoC combining MCU, dual radio, LCD, and fluid flow controller
• Reduces components and PCB complexity via internal balun for single-ended RX
Suitable for many applications
Water & gas meters
Heat cost allocators
IoT for smart homes
City infrastructure management
Get started
High band board
NUCLEO-WL33CC1
Build reliable, low-power sub-GHz wireless applications with this high-performance board optimized for 862–928 MHz frequency band.
Low band board
NUCLEO-WL33CC2
Develop robust, extended-range sub-GHz wireless applications using this versatile, ultra-low-power board optimized for the 412–479 MHz frequency band.
Embedded software
STM32CubeWL3
A comprehensive, all-in-one package of embedded software components optimized for the STM32WL3x product line microcontrollers.
Windows PC applications
STM32Cube - WL3 radio app
The STM32CubeWISEre is a GUI for interacting with the STM32WL3x line devices and evaluating their radio capabilities. The STM32CubeWISEcg is a PC-based flowgraph application for defining the radio actions to be executed.
On-demand webinar
Simplify your design approach for IoT devices with the low-power long-range STM32WL3