The STM32WBA6 is the most advanced microcontroller in the STM32WBA series, designed to empower developers building next-gen wireless IoT devices. Combining high performance, flexible connectivity, and robust security, the MCUs offer the following high-end features:
- Up to 2 Mbytes of flash memory and 512 Kbytes of RAM.
- Up to 86 GPIOs and USB OTG high-speed support for advanced connectivity.
- Design flexibility with a wide range of package options.
- QFN48 pin to pin compatibility for upgrades from STM32WBA55.
How STM32WBA6 makes a difference in your projects
- Smart locks:
- Leverage 2 Mbytes of flash for flexible key management and secure data storage.
- Support dual-bank firmware architecture to enable seamless OTA updates without downtime.
- Simplify hardware design and reduce bill of materials (BOM) costs with the integrated radio, accelerating time to market.
- Deliver an enhanced user experience through reliable and secure wireless connectivity.
- Smart home Matter and Thread end devices:
- Quickly implement the Matter standard with the certified X-Cube-Matter software package.
- Leverage ample memory (2 Mbytes flash, 512 Kbytes RAM) to support robust OTA updates and advanced features.
- Ensure reliable wireless connectivity in complex environments with high output power (+10 dBm).
- Medical devices (continuous glucose monitoring and remote monitoring):
- Design compact, wearable devices using tiny package options without compromising performance.
- Use large flash memory for extensive data logging and secure firmware updates.
- Extend battery life with ultra-low-power wireless connectivity while maintaining robust signal strength.
The three main features of this MCU series are:
- Ultra-low power consumption for battery-operated devices.
- Robust security (SESIP Level 3, Arm PSA Level 3, RED compliance).
- Multiprotocol support (Bluetooth® LE 6.0, Thread, Zigbee, Matter) and flexible packaging options.
STM32WBA6x block diagram
Additional resources
- STM32WBA6 reference manual: RM0515
- STM32WBA6 datasheet: DS14736
- STM32WBA6 errata sheet: ES0644
- Dedicated Wiki pages:
- STM32WBA6 dedicated application notes:
- Hardware boards:
- Nucleo board: NUCLEO-WBA65RI
- Discovery kit: STM32WBA65I-DK1
- ST Bluetooth® LE smartphone apps:
- Web Bluetooth App ST Web Bluetooth App Interfaces
- More resources are available on product webpage: STM32WBA series
For a detailed technical comparison of STM32WBA6 and STM32WBA5 peripheral compatibility and new features available on STM32WBA6, refer to the attached PDF.
First published on Nov 06, 2025
