Ultra-low power multi-modulation wireless STM32WL3x microcontrollers
Based on Arm Cortex-M0+ core, sub-GHz radio, and wideband wake-up radio, STM32WL3x microcontrollers support multiple modulations and an IQ interface for custom modulations for even more flexibility.
The STM32WL3 is a highly integrated long-range wireless solution for IoT devices offering a simplified design approach and low power consumption for extended battery life.
- It offers the essential features for wireless IoT devices, including:
- Contributes to longer battery life: Extends battery life by reducing the power consumption of wireless applications (low power features). Enables 10 years battery life in many applications and the use of energy harvesting.
- Sub-GHz radio provides full flexibility: Multiple modulations and protocols. Reduces the R&D development effort by using one single platform to support many communication protocols (excluding LoRa).
- Reduces design complexity: Optimizes the bill of materials (BOM), reducing the end device footprint and design complexity.
Applications
- (band 169, 433, 868 and 920 MHz)
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STM32WL3 microcontrollers provide designers with flexibility in terms of memory size and pin counts.
Two ECOPACK2® compliant packages are available to address different levels of complexity to ensure a cost-efficient fit for application requirements.
Product types
STM32WL3 provides a dual radio architecture extending the battery life of IoT applications.
The main radio provides long range connectivity with an RX sensitivity up to -132dBm and a programmable TX power up to +20dBm. It features state-of-the-art low power consumption with a Tx current down to 10 mA at 10 dBm (full SoC current consumption)
Available modulations and an IQ interface can also be used in legacy and proprietary protocols.
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The radio is suitable for systems targeting compliance with radio regulations including but not limited to Europe (ETSI EN 300-220), USA (FCC part 15 and part 90) and the Japan ARIB STD T67, T-108. Frequency coverage from 159-185 MHz, 413-479 MHz and 826-958 MHz supports major sub-GHz ISM bands around the world such as Europe, Asia Pacific, and the Americas.
The STM32WL3 provides a secondary radio featuring a low power autonomous wake up receiver and achieving down 4 μA current consumption in always on mode.
For greater flexibility, it supports wide frequency bands from 100 MHz – 2.4 GHz.
The STM32WL3x line includes a wide variety of communication features including up to 32 GPIOs. It integrates sensing peripherals, for measurement of fluid flow metering, and an internal LCD segment driver. It is based on a low-power architecture for power consumption optimization, multiple low-power modes to maximize battery life.
Package information and options
- All-in-one
application processor SoC
- Long-range
& low power
- Multi-modulation
& multi-protocol
- Low power &
autonomous radio
Development tools for STM32WL3
The STM32WL3 ecosystem provides developers with a comprehensive suite of tools and resources, streamlining application development with the STM32Cube ecosystem.
STM32WL3 is fully integrated into the STM32Cube ecosystem, ensuring seamless integration with the STM32CubeWL3 firmware package, STM32CubeMX code, STM32CubeProgrammer, STM32CubeMonitor, and STM32CubeIDE
Radio development tools such as WiSE-RadioExplorer, a graphical user interface for interacting with STM32WL3x line devices and evaluating their radio capabilities, and WiSE-RadioCodeGen , a PC application for building flowgraphs that define radio actions using a sequencer driver, are also available.
Reducing PCB footprint and achieving the best RF performance with STM32WL3’s IPD:
A portfolio of 8 RF integrated passive devices (IPDs), MLPF-WL-0xD3 RF IPDs, is available and ready to be used as STM32WL3 companion devices. RF IPDs, integrating into a tiny footprint the RF BoM of harmonic filters and impedance matching, can be used to speed up RF design and time-to-market.
Speed up your time-to-market with pre-certified reference designs:
The STM32WL3 product lines come with a set of reference designs fine-tuned for each RF frequency band, power output, and PCB layer: STDESxxx.
High band 826-958 MHz
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Low band 413-479 MHz
