STM32WB Wireless Microcontrollers from STMicroelectronics Now Supports Zigbee 3.0

STMicroelectronics STM32WB Wireless Microcontroller

STMicroelectronics has introduced Zigbee 3.0 support for its STM32WB55 wireless microcontrollers to let STM32 developers leverage the interoperability and power-saving features of Zigbee networking for projects such as home automation, smart-lighting, smart-building, and broader IoT connectivity.


STM32WB55 microcontrollers also support Thread and Bluetooth 5.0 with over-the-air update (OTA) capability. As of now, there are 10 STM32WB55 variants, offering a choice of package styles and Flash density from 256Kbyte to 1Mbyte. STM32WB55 devices help designers meet tight power and size constraints in a wide range of IoT and wearable devices. The rich analog and system peripherals, cyber-protection, and ID features including secure firmware installation (SFI), customer key storage, hardware public-key authority (PKA), and cryptographic accelerators. Capacitive touch and LCD controllers simplify user-interface integration.


Its features include Arm Cortex-M4 with Floating Point Unit, DSP instructions, memory protection unit (MPU) that enhances application security, Arm Cortex-M0+ coprocessor dedicated to managing the integrated IEEE 805.15.4 radio. Besides, MCU’s cyber-protection features ensure real-time low-layer operations run smoothly without compromising application execution. The RF transceiver has a link budget of 106dB to ensure reliable connections over distance.


The Zigbee 3.0 software included in the STM32CubeWB MCU Package provides embedded software including low-layer (LL) APIs and hardware-abstraction layer (HAL) drivers for STM32WB microcontrollers, and Bluetooth 5.0, Mesh V1.0, and Thread libraries, FreeRTOS kernel, FatFS file system, and the STMTouch capacitive-sensing library. The STM32Cube ecosystem, through STM32CubeMonitor-RF for RF testing and STM32CubeMX for device configuration and code generation, makes the development process easy.