STMicroelectronics STM32WB50 Value Line wireless microcontrollers

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STM32WB50 Value Line wireless microcontrollers (MCUs) from STMicroelectronics are a full and pin-compatible derivative of the STM32WB55 system-on-chip, created to serve connected devices that need to support Bluetooth 5.0, ZigBee 3.0 or OpenThread.

The devices are designed to offer a good link budget from 100 dB in Bluetooth 5.0 mode up to 104 dB in 802.15.4 mode. With Arm Cortex-M4 to handle the user-application software and a Cortex-M0+ to run the radio subsystem including radio stack and security, the MCUs are suitable for developers seeking radio and application isolation for security reasons or real-time application constraints.

An AES-256 as well as other basic security features are on board to ensure application robustness. The device has 1 MB of Flash and 128 KB of RAM and allows over-the-air (OTA) updates for the radio stack. The STM32WB50 also benefits from the power-saving modes of the STM32WB55, thus making it suitable for energy-saving applications.

By integrating balun circuitry, the devices are designed to save BOM cost and simplify PCB layout. To further reduce BOM cost, the STM32WB50 package allows a simple PCB with a maximum of two layers.

As a full derivative of the STM32WB55, the STM32WB50 is integrated in the same STM32Cube ecosystem. As such, it comes with Bluetooth 5.0, BLE Mesh, ZigBee 3.0 or OpenThread certified stacks, distributed in the STM32CubeWB MCU Package, as well as a comprehensive toolset including STM32CubeMonRF dedicated to radio performance evaluation and the STM32CubeProg programmer that provides features including secure programming of the RF stacks.

For more information: www.st.com/stm32wbvl.