description STMicroelectronics STM32WB55 Overview
The STM32WB55 is a dual-core SoC that combines an ARM Cortex-M4 for application logic and an ultra-low-power Cortex-M0+ for radio management. This separation ensures that the Bluetooth Mesh stack runs independently, providing high reliability. It is widely used in industrial environments where STMicroelectronics' extensive ecosystem and reliable hardware are preferred by engineers.
help STMicroelectronics STM32WB55 FAQ
What are the two processor cores used in the STM32WB55 microcontroller?
The STM32WB55 utilizes a dual-core architecture, featuring an ARM Cortex-M4 running at 64 MHz for application processing. It pairs this with an ultra-low-power Cortex-M0+ core running at 32 MHz specifically dedicated to managing the radio stack.
What wireless protocols does the STM32WB55 support?
This SoC features an integrated 2.4GHz radio that fully supports Bluetooth 5.0 and Bluetooth Mesh. It is also capable of running IEEE 802.15.4 communication, allowing it to be used for Thread and Zigbee networks.
Can I debug both the M4 and M0+ cores simultaneously on this chip?
Yes, developers can debug both cores using standard ST-Link tools within the STM32CubeIDE. STMicroelectronics provides the necessary firmware to handle multi-core debugging of the application and radio logic concurrently.
What kind of power consumption can I expect when running a BLE beacon on the STM32WB55?
The STM32WB55 is highly optimized for ultra-low-power applications, drawing just a few microamps in standby mode. When broadcasting a Bluetooth Low Energy beacon, it can run for years on a standard coin cell battery depending on the advertising interval.
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