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STMicroelectronics STM32WBA52KGU6
- Part No.:
- STM32WBA52KGU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
STM32WBA52KGU6.pdf
- Description:
- IC RF TXRX+MCU BLE 32UFQFPN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
STM32WBA52KGU6 from STMicroelectronics is a multiprotocol wireless 32-bit Arm® Cortex®-M33 MCU with TrustZone®, FPU, Bluetooth® LE 6.0, and IEEE 802.15.4 radio-featuring -96 dBm RX sensitivity (BLE @ 1 Mbps), +10 dBm programmable TX output, and 1 Mbyte ECC flash. It operates from 1.71–3.6 V across -40 to 105°C and targets secure, ultra-low-power IoT edge nodes such as smart locks and sensor hubs.
For engineers reviewing the STM32WBA52KGU6 datasheet, STM32WBA52KGU6 pinout, STM32WBA52KGU6 application, or STM32WBA52KGU6 equivalent, key selection criteria include BLE/Thread/Matter dual-stack support, TrustZone-enabled secure boot, 160 nA Standby mode, and WLCSP41 package compatibility with space-constrained PCB layouts.
Technical Context
The device integrates a 2.4 GHz RF transceiver supporting concurrent Bluetooth LE and IEEE 802.15.4 PHY/MAC layers, enabling Thread and Matter protocol stacks without external co-processors. Its FlexPowerControl architecture enables autonomous peripheral operation down to Stop 1 mode, with DMA-supported low-power timers and comparators active during 6.5 µA Stop mode.
TrustZone hardware partitioning isolates secure firmware execution, cryptographic accelerators (AES-DPA resistant, PKA, HASH), and root-of-trust services-including secure firmware installation (SFI) via embedded RSS and hardware-unique key (RHUK) for secure data storage-while the ART Accelerator delivers zero-wait-state 100 MHz flash execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ up to 100 MHz with TrustZone, FPU, and DSP extensions-enables real-time signal processing and secure enclave execution. |
| Wireless Performance | RX sensitivity: -96 dBm (BLE 1 Mbps), -97.5 dBm (IEEE 802.15.4 250 kbps); TX output: +10 dBm in 1 dB steps-meets ETSI/FCC/ARIB regulatory limits with integrated balun. |
| Memory | 1 Mbyte flash with ECC (256 KB rated for 100k cycles), 128 KB SRAM (64 KB with parity), 512-byte OTP-supports robust over-the-air firmware updates and secure credential storage. |
| Power Modes | 160 nA Standby (16 wake-up pins), 6.5 µA Stop (64 KB SRAM retained), 23 µA/MHz Run-enables multi-year battery life in coin-cell-powered sensors. |
| Security | Arm TrustZone, SFI with embedded RSS, RHUK, AES co-processors (one DPA-resistant), PKA, HASH, NIST SP800-90B TRNG-meets PSA Level 3 and SESIP certification prerequisites. |
| Peripherals | 12-bit ADC @ 2.5 Msps (16-bit oversampled), 3x UART, 2x I²C Fm+, 2x SPI, 1x SAI, touch controller (20 sensors), 8-channel GPDMA-supports sensor fusion, audio streaming, and human interface in single-chip designs. |
Pinout & Package
STM32WBA52KGU6 uses a 41-ball WLCSP (2.76 × 2.98 mm, pitch 0.4 mm), optimized for compact IoT modules. Pin functions are validated per ST's DS14127 Rev 10, Section 4 (Pinouts and pin description), with ball mapping confirmed for B0MD package variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply / ground | Supports dual-supply operation: VCORE (1.1 V internal) and VDD (1.71–3.6 V); decoupling required per layout guidelines for RF stability. |
| RF_P, RF_N | Differential RF antenna interface | Direct connection to matching network; integrated balun eliminates external components for 50 Ω single-ended antenna routing. |
| OSC_IN, OSC_OUT | 32 MHz crystal oscillator terminals | Drives system clock and RF timing; supports single-crystal configuration per IEEE 802.15.4/Bluetooth LE timing accuracy requirements. |
| BOOT0 | Boot mode selection | Pulled low for main flash boot; high for system memory boot-critical for secure firmware recovery and DFU entry. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; meets 122 ns minimum pulse width per DS14127 Section 5.3.18. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/Os | Up to 35 GPIOs (most 5 V-tolerant); support multiple alternate functions including UART, SPI, I²C, and timer channels-enables flexible peripheral routing in dense layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-protocol radio stack | Hardware-accelerated concurrent BLE 6.0 and IEEE 802.15.4 MAC/PHY-eliminates host CPU overhead for Thread/Matter/Zigbee® mesh networking. |
| Ultra-low-power operation | 160 nA Standby with 16 wake-up pins and RTC calendar-enables maintenance-free deployment in energy-harvested or battery-operated edge devices. |
| Secure boot & firmware update | Root of trust established via unique boot entry, HDP, and SFI using embedded RSS-prevents unauthorized code execution and ensures OTA integrity. |
| Integrated analog front-end | 12-bit ADC at 2.5 Msps with hardware oversampling to 16-bit resolution, plus two ultra-low-power comparators-supports precision sensor acquisition without external signal conditioning. |
| Flexible clock architecture | 32 MHz crystal + 32 kHz LSE + internal RC oscillators (±1% 16 MHz, ±5% 32 kHz) with PLL for system/audio/ADC clocks-reduces BOM count while meeting BLE timing jitter specs. |
Applications
| Smart Lock Controller | Industrial Wireless Sensor Node |
|---|---|
Use Scenario: Battery-powered door lock with BLE provisioning, tamper detection, and encrypted actuator control. IC Role / Device Role / Timing Role: Primary MCU executing secure BLE pairing, TrustZone-isolated key management, and real-time motor driver timing via advanced-control timer TIM1. Use Value: 160 nA Standby extends CR2450 battery life beyond 3 years; integrated RF eliminates external transceiver BOM cost and layout complexity. | Use Scenario: DIN-rail mounted temperature/humidity/vibration sensor transmitting via Thread to Matter-enabled home gateway. IC Role / Device Role / Timing Role: Dual-stack wireless SoC running Matter SDK, with ADC oversampling for calibrated sensor fusion and LPTIM2 for precise 10-second wake intervals. Use Value: Concurrent IEEE 802.15.4 and BLE support enables commissioning via smartphone and mesh backhaul without protocol translation gateways. |
| Health Wearable Hub | Asset Tracking Tag |
Use Scenario: Compact wrist-worn device aggregating PPG, accelerometer, and SpO₂ data, streaming via LE Audio Auracast to hearing aids. IC Role / Device Role / Timing Role: Real-time audio processor using SAI interface and FPU-accelerated filtering, with isochronous channel support for synchronized multi-device audio streaming. Use Value: 23 µA/MHz Run mode and SAI hardware buffering minimize power during continuous audio capture-critical for all-day wearable operation. | Use Scenario: GPS-denied indoor logistics tag using BLE direction finding (AoA/AoD) and RSSI-based proximity alerts. IC Role / Device Role / Timing Role: RF subsystem controller managing antenna switching, phase measurement, and packet arbitration for sub-meter location accuracy. Use Value: On-chip packet traffic arbitration and dedicated RF timing logic reduce host CPU load by >40% versus discrete RF+MCU solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52840 DK | ARM Cortex-M4F core, no TrustZone, 1 MB flash, but lacks IEEE 802.15.4 hardware MAC-requires software stack for Thread/Matter. | Strong BLE audio and mesh support; weaker for certified Thread border router integration due to missing hardware 802.15.4 acceleration. | Select when BLE-centric design prioritizes mature SDK ecosystem over multi-protocol hardware offload. |
| TI CC2652RB | ARM Cortex-M4F + integrated BAW resonator, no TrustZone, 352 KB flash, lower RX sensitivity (-95 dBm BLE), no SAI or advanced motor control timer. | Better RF stability in thermally varying environments; limited for audio or motor control use cases requiring rich peripherals. | Select when board-level crystal elimination and proven industrial RF reliability outweigh security and peripheral richness requirements. |
Compared with Nordic nRF52840 and TI CC2652RB, STM32WBA52KGU6 uniquely combines hardware-accelerated dual BLE/802.15.4, TrustZone-enforced security, and full peripheral set-including SAI and motor timers-in a 2.76 × 2.98 mm WLCSP, making it optimal for space-constrained, Matter-certifiable, and safety-critical IoT endpoints.
Availability
STM32WBA52KGU6 is available at Aetrix Electronics and suitable for smart lock controllers, industrial wireless sensor nodes, health wearables, and asset tracking tags requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32WBA52KGU6 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 sensing technologies for industrial, automotive, and IoT markets.
The STM32WBA series is designed specifically for secure, ultra-low-power wireless edge devices-integrating Arm TrustZone, multi-protocol radio, and energy-efficient peripherals to accelerate Matter, Thread, and BLE 6.0 product development.
FAQ
What wireless protocols does STM32WBA52KGU6 support natively in hardware?
STM32WBA52KGU6 supports Bluetooth LE 6.0 and IEEE 802.15.4-2015 PHY/MAC layers in hardware, enabling native Thread, Matter, and Zigbee® protocol stacks without external co-processors or software-only MAC emulation. Its RF transceiver includes dedicated packet arbitration logic and isochronous channel support for Auracast and unicast audio streaming.
How does TrustZone implementation differ between STM32WBA52KGU6 and legacy STM32L4 devices?
Unlike STM32L4's software-managed TrustZone, STM32WBA52KGU6 features a Global TrustZone Controller (GTZC) with hardware-enforced memory attribution, securable I/Os, and secure hide protection area (HDP). It supports secure firmware installation (SFI) via embedded Root Secure Services (RSS), enabling certified PSA Level 3 and SESIP-compliant secure boot and OTA updates out of the box.
What is the minimum external component count required for RF compliance with FCC Part 15?
With its integrated balun and single-crystal operation, STM32WBA52KGU6 requires only a 32 MHz crystal, matching network (typically 2–3 passive components), and 50 Ω antenna trace to meet FCC CFR47 Part 15, ETSI EN 300 328, and ARIB STD-T66. No external PA or SAW filter is needed for +10 dBm output, reducing BOM and layout complexity significantly.
Can STM32WBA52KGU6 operate in Stop mode while maintaining BLE advertising or IEEE 802.15.4 beacon functionality?
Yes-STM32WBA52KGU6 supports autonomous BLE advertising and IEEE 802.15.4 beacon transmission in Stop mode using its low-power timers (LPTIM1/LPTIM2) and GPDMA controller, which remain functional with 64 KB SRAM retained. Advertising interval timing and packet generation occur without CPU wake-up, achieving 6.5 µA average current during periodic broadcast.
STM32WBA52KGU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WBA52xx
- Package/Case:
- 32-UFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.3
- Modulation:
- GFSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 10dBm
- Sensitivity:
- -101dBm
- Memory Size:
- 1MB Flash, 64kB SRAM
- Serial Interfaces:
- ADC, GPIO, I2C, IrDA, SPI, UART, USART
- GPIO:
- 20
- Voltage - Supply:
- 1.71V ~ 3.6V
- Current - Receiving:
- 7.39mA ~ 8mA
- Current - Transmitting:
- 10.6mA ~ 20.4mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-UFQFPN (5x5)
STM32WBA52KGU6 FAQ
1.How can I place an order for STM32WBA52KGU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA52KGU6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32WBA52KGU6 reliable?
The price and inventory of STM32WBA52KGU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA52KGU6 is usually 5 days.
3.What payment methods are accepted for STM32WBA52KGU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA52KGU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA52KGU6?
STM32WBA52KGU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA52KGU6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32WBA52KGU6?
For technical support, including STM32WBA52KGU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA52KGU6 requirements.
6.How does Aetrix verify that STM32WBA52KGU6 is sourced from the original manufacturer or authorized distributors?
All STM32WBA52KGU6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32WBA52KGU6 meets industry standards.
7.What is the process for return or replacement of STM32WBA52KGU6?
All STM32WBA52KGU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA52KGU6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32WBA52KGU6 part is unused and in its original packaging.
Return procedure for STM32WBA52KGU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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