STMicroelectronics STM32WBA50KGU6

Overview

STM32WBA50KGU6 from STMicroelectronics is a multiprotocol wireless 32-bit Arm® Cortex®-M33 MCU with integrated Bluetooth® LE radio, FPU, and DSP. It delivers -96 dBm RX sensitivity at 1 Mbps, +4 dBm programmable TX output (1 dB steps), and ultra-low power operation down to 160 nA Standby mode. Designed for battery-powered IoT edge nodes requiring secure, certified RF connectivity in industrial sensors and smart home devices.

For engineers reviewing the STM32WBA50KGU6 datasheet, STM32WBA50KGU6 pinout, STM32WBA50KGU6 application, or STM32WBA50KGU6 equivalent, key selection criteria include Bluetooth LE Core 6.0 feature support (LE Audio, Direction Finding, Mesh), FlexPowerControl low-power modes with DMA-peripheral autonomy, and hardware security accelerators (AES, PKA, RNG) compliant with NIST SP800-90B.

Technical Context

The device integrates a 2.4 GHz RF transceiver with integrated balun and single-crystal operation, supporting ETSI EN 300 328, FCC Part 15, and ARIB STD-T66 compliance. Its Arm Cortex-M33 core includes MPU, FPU, and DSP extensions, coupled with an 8-Kbyte ART Accelerator enabling zero-wait-state execution at up to 100 MHz (150 DMIPS).

Power management employs FlexPowerControl architecture: autonomous peripherals remain active in Stop 1 mode (2.25 µA with 16-Kbyte SRAM retention), while radio operation draws 7.91 mA RX / 10.51 mA TX at 0 dBm. Security is enforced via RDP-level life cycle control, active tamper detection, and hardware-accelerated cryptography (AES, HASH, PKA).

Key Specifications

Pinout & Package

UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with 32-pin layout optimized for compact RF PCB design and EMI control. Includes dedicated RFIO pin, VDDRF/VSSRF separation, and integrated balun interface reducing external component count.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wireless MCU applications.

Compared with nRF52840 DK and CC2652RB, STM32WBA50KGU6 uniquely combines BLE Core 6.0 features, hardware PKA for fast ECC, and 1 Mbyte ECC flash-making it optimal for industrial IoT nodes requiring both RF robustness and firmware lifecycle security.

Availability

STM32WBA50KGU6 is available at Aetrix Electronics and suitable for smart industrial sensor nodes, BLE audio wearables, secure smart home hubs, and mesh network lighting controllers requiring stable component supply across multi-year production cycles.

Supply support for STM32WBA50KGU6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and IoT markets.

The STM32WBA series targets ultra-low-power wireless edge nodes, integrating certified BLE radio, Arm Cortex-M33 security extensions, and FlexPowerControl architecture to simplify development of battery-operated, secure, and regulatory-compliant IoT endpoints.

FAQ

What Bluetooth LE features does STM32WBA50KGU6 support?

It supports Bluetooth LE Core Specification 6.0 including LE 2M PHY, LE Coded PHY, Direction Finding (AoA/AoD), LE Power Control, Isochronous Channels, Extended/Periodic Advertising, LE Secure Connections, LE Audio, and Mesh Networking. All features are implemented in hardware/firmware per ST's certified stack (BLUENRG-MSP v4.x).

Does STM32WBA50KGU6 require external RF components?

No - it integrates a balun and supports single-crystal operation (32 MHz HSE), eliminating discrete RF matching networks and reducing external component count by up to 7 parts. Only antenna matching and DC blocking capacitor are typically required for PCB layout.

How is security implemented in STM32WBA50KGU6?

Security includes RDP-based debug protection, AES-128/256 and HASH-256 hardware accelerators, Public Key Accelerator (PKA) for ECC-256, NIST SP800-90B–compliant TRNG, 96-bit unique ID, active tampers, and 512-byte OTP for secure key storage - all accessible via ST's X-CUBE-SBSFU secure firmware update middleware.

What low-power modes are available and their typical current draw?

Standby mode draws 160 nA (8 wake-up pins), Standby with 16-Kbyte SRAM retention draws 2.25 µA, Stop mode draws 20.2 µA (16-Kbyte SRAM), and Run mode consumes 41.8 µA/MHz at 3.3 V. Radio-specific currents are 7.91 mA (RX) and 10.51 mA (TX at 0 dBm), verified per DS14688 Rev 2 Table 31.