STM32WB Series

Based on an Arm^® Cortex^®‐M4 core running at 64 MHz (application processor) and an Arm^® Cortex^®‐M0+ core at 32 MHz (network processor), the STM32WB wireless microcontroller is a self-sufficient solution. It embeds connectivity features and a general-purpose microcontroller in a single System-on-Chip (SoC).

Bluetooth^® Low Energy

• STM32WB comes with a certified Bluetooth^® Low Energy 5.4 radio stack, profiles from the Bluetooth SIG, as well as a Mesh topology that is V1.0 compliant.
• The STM32WB SDK also supports a host controller interface (HCI) for Bluetooth ^® Low Energy solutions covering Zephyr and Arm cordio stack.

IEEE 802.15.4 standards: Zigbee and Thread

• IEEE 802.15.4 MAC layer: allows designers to implement any proprietary protocols.
• Zigbee (Zigbee PRO 2017): STM32WB supports all Zigbee network topologies with optimized footprints. Zigbee RFD and FFD deliveries cover end-device, coordinator, and router roles.
• OpenThread: this technology is covered with all MTD, FTD, and border router deliveries. It addresses sleepy end-devices (SED), routers, and leader roles, thereby also enabling gateway infrastructures.

Several certified configurations are available to provide more design freedom (size and OTA capabilities), enabling platform optimization.

Matter

Supported by the STM32WB MCU, Matter is an application layer, which aims at making smart home devices interoperable.

An open-source standard, Matter ensures seamless interactions between connected devices across different IP technologies. It is available in the Matter GitHub.

In a Matter network, Bluetooth^® Low Energy is used to commission devices. It runs in a dynamic concurrent mode with the Thread protocol.

Multiple protocols running on the same MCU

The STM32WB multiprotocol MCUs can run Bluetooth^® Low Energy 5.4 together with 802.15.4 wireless protocols, Zigbee, or OpenThread protocols in concurrent modes.

This enables more convenient device management during installation and configuration, and significantly improves overall user experience.

Applications:

Industrial

Smart home

IoT for Smart things

Product types:

The wireless STM32WB MCUs are based on two independent cores. They bring more efficiency for the real-time execution of radio stacks and reduce power consumption.

The STM32WB MCU series provides the same digital and analog peripherals as the ultra-low power STM32L4 MCUs. They can address battery-powered devices and complex applications.

• The STM32WBx5 line embeds connectivity features, including a crystal-less USB 2.0 FS interface, a quad SPI, audio support, an LCD driver, touch sensing functionalities. It also brings up to 72 GPIOs, an integrated switched-mode power supply (SMPS) to optimize power consumption, and multiple low-power modes to maximize battery life. STM32WBx5 microcontrollers can address multiple applications, from industrial to consumer.
• The STM32WBx0 Value Line enables entry-level solutions. It features an optimized peripheral set with a reduced temperature range.
• The STM32WBxM certified module embeds an STM32WBx5 MCU and its full reference design, in a smart LGA package. It is fully certified for all protocols and is EMC-compliant for a wide geographical coverage. The module's adjustable pinout configuration provides flexibility to manufacturers, since they can choose to use the basic feature set to lower the manufacturing costs of entry-level devices. Alternatively, they can opt for the full pinout for high-end devices.

This product portfolio of 2.4 GHz wireless STM32 MCUs provides integrated solutions from product definition to the prototyping phase, up to the final platform definition.

Security & ID

STM32WB microcontrollers embed security features, which reduce device maintenance needs and ensure that end devices are trustable and cannot be cloned.

STM32WB microcontrollers come with crypto IP, such as 256-bit AES hardware encryption, PCROP read/write protection, JTAG fuse, and public-key cryptography with an elliptic curve encryption engine. The firmware upgrade services (FUS) ensure secured wireless stack updates, encryption key management and code protection.

The customer key storage (CKS) feature ensures application code and IP protection.

Discover our portfolio

Benefits

• Streamline your design using an integrated solution, combining connectivity features and a wireless application MCU processor
• Create innovative devices leveraging Bluetooth^® Low Energy 5.4 technology
• Extend far-end communication ranges thanks to an output power of over 10dBm
• Increase battery life with the advertising extension for device communication
• Ensure fast and reliable data transfers
• Boost application efficiency (407 CoreMark score)
• Protect your IP and privacy (SESIP3 certification targets)
• Accelerate your time-to-market thanks to the market-proven STM32Cube ecosystem