Wireless MCUs for Bluetooth® LE 5.0, Zigbee® 3.0, and Thread

October 20, 2020 //By Jean-Pierre Joosting
STM32WB35 and STM32WB30 Value Line MCUs from STMicroelectronics
STMicroelectronics has expanded the STM32WB portfolio of dual-core multi-protocol microcontrollers (MCUs) by introducing the STM32WB35 and STM32WB30 Value Line, giving designers more flexibility to target cost-conscious market opportunities.

Ultra-low-power MCUs from STMicroelectronics, the STM32WB35 and STM32WB30 integrate a 2.4 GHz radio managed by a dedicated Arm® Cortex®-M0+ core, with a 64 MHz Arm® Cortex-M4 for the main application, to permit uninterrupted real-time performance. They support Bluetooth® Low Energy 5.0, Zigbee® 3.0, OpenThread (IEEE 802.15.4) protocols and concurrent modes, with built-in security features.

All stacks are fully certified, supported and handled by ST and available free of charge. The devices are suited to large-scale IoT applications such as fleet and resource management, as well as asset monitoring and tracking.

Packaged in QFN48, the devices are pin compatible with existing STM32WB5x devices and share common MCU features, giving users flexibility to easily scale and migrate their designs. The MCUs integrate the radio balun, USB2.0 Full Speed device with crystal-less oscillator, embedded capacitors for 32 MHz crystal, and DC/DC step-down converter to minimize Bill of Materials (BoM) and platform footprint.

Outstanding RF performance, with programmable output power up to +6 dBm and with a 102 dBm link budget, ensures reliable connectivity over longer distances, while ultra-low power consumption extends battery runtime.

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