The STM32WBA2 extends the STM32WBA family with a more integrated, cost-effective MCU for low-power wireless devices.
As the most affordable STM32 wireless MCU supporting Bluetooth® LE and IEEE 802.15.4, it adds improved wireless features and new communication interfaces while staying fully compatible with existing products.
Powered by an Arm® CortexM33 at 64 MHz, it provides a compact and efficient platform for flexible wireless applications.
Improved wireless performance for robust IoT designs
- High‑performance radio delivering stable connectivity with +10 dBm max output power
- Supports Bluetooth® LE, Zigbee, and Thread for broad protocol compatibility
- Programmable Tx power in 1 dB steps to precisely tune energy consumption and extend battery life
- Flexible power‑control leveraging ultra-low-power STM32 MCU architecture for longer battery life
Cost-effective platform with more integration
- 512 Kbytes of flash and 96 Kbytes of RAM to support both your application and connectivity stacks
- USB‑FS and Q-SPI with XiP and on-the-fly decryption for richer connectivity and memory expansion options
- Compact package options: QFN48, QFN32, WCSP37
- 2‑layer PCB support to simplify layout and reduce BOM costs
- Pin-to-pin compatibility with existing STM32WBA products for easy scaling and migration
Streamlined development
- Supported by the STM32Cube ecosystem, offering dedicated middleware, tools, extensive documentation, and application examples
- RF reference designs, IPD chip, and optional external PA enabling Tx power boosts up to +20 dBm
Advanced security features for regulatory compliance
Targeting SESIP3 and PSA Level 1 certification, STM32WBA2 provides strong security foundations to help developers address upcoming requirements from RED, CRA, and the US Cyber Act. A secure firmware update capability helps developers ship long-lasting, compliant products with confidence.
Additional resources
First published on Feb 25, 2026
