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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).


New STM32WBx0 Value Line focuses on the essentials

Extending our portfolio of wireless microcontrollers, the feature-optimized STM32WBx0 Value line enables the design of cost-efficient connected devices running Bluetooth™ 5.0 Low Energy, OpenThread, or ZigBee 3.0 stacks. With its energy-saving technologies, 1 Mbyte Flash Memory and 128 Kbytes RAM and embedded security for safe OTA updates, the STM32WBx0 Value Line is ideal for industrial and consumer IoT applications.


The STM32WB50CG MCU, housed in a QFN48 package, is now in production. Dedicated STM32Cube development tools are available.

 

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