Product News Tech News

Low-Cost MCUs Feature Wireless Connectivity

STMicroelectronics (ST) has released its STM32WB50 Value Line wireless MCUs that are a full and pin-compatible derivative of the STM32WB55 SoC. The device was created to serve cost-sensitive connected devices that need to support Bluetooth 5.0, ZigBee 3.0 or OpenThread. The devices offer a good link budget from 100dB in Bluetooth 5.0 mode up to 104dB in 802.15.4 mode.

With the Arm Cortex-M4 to handle the user-application software and a Cortex-M0+ to run the radio subsystem including radio stack and security, the STM32WB50 is well suited for developers seeking radio and application isolation for security reasons or real-time application constraints.

The STM32WB50 combines strong security with Value Line affordability, says ST. An AES-256 as well as other basic security features are on board to ensure application robustness. The device has 1MB of Flash and 128KB 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 ideal for energy-saving applications.

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

As a full derivative of the STM32WB55, the STM32WB50 is integrated in the same market-proven STM32Cube ecosystem. As such, it comes with Bluetooth 5.0, BLE Mesh, ZigBee 3.0, or OpenThread certified stacks, distributed free of charge 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.

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STM32WB50 MCUs are in production now and available in volume for $1.89 in QFN48 package.

STMicroelectronics | www.st.com

 


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