Multi-protocol sub-GHz SoC

Streamline your IoT designs with low-power STM32WL3 MCUs

stm32cubewl3

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.

Key benefits

Enables longer battery lifetime​

• Low-power consumption radio down to 5.6 mA (RX) and 8 mA (TX @ 10 dbm)

• Low-power autonomous wake up receiver down to 4 µA in always on mode

• MCU low-power mode down to 910 nA with RAM retention

Offers flexible & multi-modulation support

• Multiple modulation, IQ interface and H/W packet handler

• Worldwide deployments: 413-479 MHz, 826-958 MHz

• 169 MHz band support: 159-185 MHz (on STMWL3xxxxxA P/N)

Reduces design complexity​

• Lower BOM costs thanks to high integration

• SoC integrating MCU + dual radio + LCD and fluid flow sensing controller

• Internal balun: single-ended RX

Key features

  • Up to 256 Kbytes of flash memory
  • Arm® Cortex®-M0+ driving both applications and sub-GHz protocols
  • 2 x 16 Kbytes of SRAM banks: up to 32 Kbytes
  • 1 byte of OTP Store ID, keys, and calibration data
  • DMA controller with 8 channels
  • 2 x SPI, 2 x I²C, UART, low-power UART
  • 12-bit ADC
  • 2 general-purpose 16-bit timers, 4+1 PWMs, watchdog timer, RTC, 3 specific sub-GHz IP timers (LP timer)
  • Analog LC sensor
  • Up to 20-pin LCD driver

Suitable for many applications

Water & gas meters

Heat cost allocators

IoT for smart homes

City infrastructure management

Get started

Nucleo wl33cc1

High band board

NUCLEO-WL33CC1

A high-performance, ultra-low-power development board optimized for the 862-928 MHz high-frequency band, making it ideal for applications requiring robust sub-GHz wireless communication.

nucleo wl33cc2

Low band board

NUCLEO-WL33CC2

A versatile, ultra-low-power development board optimized for the 412-479 MHz low-frequency band, ideal for applications that need reliable sub-GHz wireless connectivity in lower frequency ranges.

stm32cube

Embedded software

STM32CubeWL3

A comprehensive, all-in-one package of embedded software components optimized for the STM32WL3x product line microcontrollers.

wise

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