STMicroelectronics STM32WB5MMG wireless microcontroller module

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STMicroelectronics is offering a miniature, ready-to-use STM32 wireless microcontroller (MCU) module to help accelerate the market introduction of Bluetooth LE- and 802.15.4-based IoT devices. The 7 x 11.3 mm STM32WB5MMG module lets product teams build connected devices without needing wireless-design skills.

Made to enable PCB technology requiring a minimal number of layers, the product integrates everything up to the antenna. Users can also leverage the tools, design wizards, radio stacks and turnkey software libraries of ST’s STM32Cube MCU development ecosystem, available free of charge, to complete the project quickly and efficiently.

The wireless module is designed to simplify technical challenges and to extend opportunities for smart connected devices. A complete, ready-to-use subsystem in a single package, the module supports ST’s novel concurrent dual-protocol mode that lets any protocol based on IEEE 802.15.4 radio technology, including Zigbee 3.0 and OpenThread, connect the user directly to any Bluetooth Low Energy device.

Benefiting from all features of ST’s STM32WB55 ultralow-power wireless microcontroller ICs, the module addresses a variety of opportunities for smart-home, smart-building and smart-factory equipment. Users can leverage the MCU’s dual-core architecture that separates radio and application-level processing for unimpeded performance, large memories for radio and application code and data storage, and state-of-the-art cybersecurity.

The module integrates a miniature antenna properly matched to the receiver circuitry, built-in switched-mode power supply (SMPS) circuitry and frequency-control components. With support for crystal-less USB Full-Speed connectivity, the module should help users minimise bill-of-materials costs as well as simplify the hardware design.

Cyber protection includes secured software updates including over-the-air (OTA) for brand protection and device integrity, customer key storage and proprietary code readout protection (PCROP) to protect developers’ intellectual property and public key authentication (PKA) support for cryptographic protection of code and connections.

By combining high RF performance with low power consumption, the module offers ongoing connectivity with extended battery life. Designers can create a simplified PCB leveraging the module’s optimised pin-out and take advantage of existing STM32WB55 MCU firmware libraries and toolchain.

For more information: https://blog.st.com/stm32wb55mmg/.