STM32WB series of Wireless MCUs
The STM32WB dual-core MCUs with wireless support are based on an Arm® Cortex®‐M4 core running at 64 MHz (application processor) and an Arm® Cortex®‐M0+ core at 32 MHz (network processor). With two totally independent cores, this innovative architecture is optimized for real‑time execution (radio‑related software processing), resource use flexibility, power management, and BOM cost, to bring better user experience.
The STM32WB platform is an evolution of the well‐known market-leading STM32L4 ultra‑low‑power series of MCUs. It provides the same digital and analog peripherals suitable for applications requiring extended battery life and complex functionalities.
STM32WB proposes a variety of communication assets, a practical crystal-less USB2.0 FS interface, audio support, an LCD driver, up to 72 GPIOs, an integrated SMPS for power consumption optimization, and multiple low-power modes to maximize battery life.
On top of wireless and ultra‐low‐power aspects, a particular focus was placed on embedding security hardware functions such as a 256‐bit AES, PCROP, JTAG Fuse, PKA (elliptic curve encryption engine), and Root Secure Services (RSS). The RSS allows authenticating OTA communications, regardless of the radio stack or application.
The STM32WB55 Bluetooth 5 -certified device offers Mesh 1.0 software support, multiple profiles and flexibility to integrate proprietary BLE stacks.
OpenThread-certified software stack is available. The radio can also run BLE/OpenThread protocols concurrently. The embedded generic MAC allows the usage of other IEEE 802.15.4 proprietary stacks like ZigBee®, or proprietary protocols, giving even more options for connecting devices to the Internet of Things (IoT).
We asked Nathalie the following questions: - Why is the STM32WB the best product for 2.4GHz design? - How can the STM32WB accelerate customer development? - How can STM32WB help tackle hidden system cost? - Can we see a quick demo?
The STM32Cube.AI is an extension pack of the widely used STM32CubeMX configuration and code generation tool enabling AI on STM32 Arm® Cortex®-M-based microcontrollers.
MCU Package for STM32WB series
Bluetooth™ 5 and 802.15.4 Nucleo Pack
Getting started with STM32WB
Purchase a STM32WB55 Nucleo pack
Download the Free STM32CubeWB embedded software package containing the HAL, LL (low-layer) APIs, middleware, Bluetooth™ 5 certified stack and Open-Thread certified stacks. Then install ST’s STM32CubeMX graphical software configuration tool (Free) that supports pinout configuration, code generation and a power consumption calculator. Start with one of the many examples provided or build your own project.
To fine tune your application, or perform radio test or build your own profile down load and install STM32CubeMonitor-RF tool.
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