Cost-sensitive wireless nodes need radio performance, secure connectivity, low current consumption, and simple board design without adding unnecessary circuitry. The STM32WBA2 family integrates a 64MHz Arm® Cortex®-M33 core. It supports Zigbee and Thread connectivity, helping designers cover several short-range wireless protocols with one MCU platform.
The family is aimed at connected products where bill-of-materials cost and battery life matter. Integrating the balun and supporting two-layer PCB designs help reduce external components and simplify RF layout.
The Arm Cortex-M33 core includes a floating-point unit (FPU), digital signal processing (DSP) instructions, and memory protection unit (MPU). Security support is built around Arm TrustZone® and a trusted-based security architecture (TBSA). The wireless MCU also includes hardware cryptographic support for connected applications. This includes advanced encryption standard (AES) acceleration, public key acceleration, HASH acceleration, and a true random number generator.
Low-power operation is a key part of the STM32WBA2 architecture. Autonomous peripherals with direct memory access can remain functional in Stop 1 mode, reducing processor wake-ups in sensor, control and beacon applications.
The radio supports programmable transmit power, allowing developers to balance link budget and energy consumption. Packet traffic arbitration helps manage coexistence when several radios operate in the same product or environment.
The product line supports PSA SoC, PSA Level 1, and SESIP3 target certifications. This helps engineers designing products for connected markets affected by RED, Cyber Resilience Act (CRA), and US Cyber Trust Mark requirements.
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