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STMicroelectronics STM32WBA52CEU6
- Part No.:
- STM32WBA52CEU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WBA52CEU6.pdf
- Description:
- IC RF TXRX+MCU BLE 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
STM32WBA52CEU6 from STMicroelectronics is a multiprotocol wireless 32-bit MCU based on Arm® Cortex®-M33 with TrustZone®, FPU, and integrated 2.4 GHz radio supporting Bluetooth® LE (Core Spec 6.0) and IEEE 802.15.4 (for Thread/Matter/Zigbee®). It delivers -96 dBm RX sensitivity at 1 Mbps BLE, +10 dBm programmable TX power, and ultra-low-power operation down to 160 nA Standby mode. It targets secure, battery-powered IoT edge nodes such as smart locks and sensor hubs.
For engineers reviewing the STM32WBA52CEU6 datasheet, STM32WBA52CEU6 pinout, STM32WBA52CEU6 application, or STM32WBA52CEU6 equivalent, key selection considerations include its dual-protocol radio stack, TrustZone-enabled secure boot and firmware upgrade, FlexPowerControl for sub-µA low-power modes, and 1 Mbyte ECC flash with 100k write cycles - all in a 5 × 5 mm UFQFPN32 package.
Technical Context
The device integrates a dual-mode RF transceiver with hardware packet arbitration, integrated balun, and single-crystal 32 MHz operation - eliminating external RF matching components. Its radio supports concurrent BLE and IEEE 802.15.4 PHY/MAC layers, enabling Matter-over-Thread and Zigbee® 3.0 coexistence in a single chip.
The Cortex-M33 core runs at up to 100 MHz with ART Accelerator (8-Kbyte instruction cache), delivering 410 CoreMark® (4.10 CoreMark/MHz), while TrustZone partitions secure and non-secure execution environments. Security includes two DPA-resistant AES co-processors, PKA, HASH, NIST SP800-90B-compliant TRNG, and Root of Trust via HDP and SFI with TF-M support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 100 MHz with TrustZone, FPU, MPU, and DSP extensions - enables real-time secure firmware execution and signal processing. |
| Wireless Protocols | Bluetooth LE 5.3 (including LE Audio, Direction Finding, Isochronous Channels) and IEEE 802.15.4-2015 (Thread 1.3, Matter 1.0, Zigbee® 3.0) - single-chip multi-stack support without external radio IC. |
| RF Performance | RX sensitivity: -96 dBm (BLE 1 Mbps), -97.5 dBm (802.15.4 250 kbps); TX output: +10 dBm in 1 dB steps - meets ETSI EN 300 328, FCC Part 15, ARIB STD-T66 regulatory requirements. |
| Power Efficiency | 160 nA Standby (16 wake-up pins), 0.9 µA Standby with 64-Kbyte SRAM retention, 6.5 µA Stop mode - extends coin-cell battery life to multi-year operation. |
| Memory | 1 Mbyte flash (ECC, 256 Kbytes rated for 100k cycles), 128-Kbyte SRAM (64 KB with parity), 512-byte OTP - supports robust over-the-air updates and secure credential storage. |
| Security Hardware | TrustZone, secure boot with unique boot entry, HDP, SFI/RSS, RHUK, active tampers, CRC unit - fulfills PSA Level 3 and SESIP certification prerequisites. |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (16-bit oversampled), two ultra-low-power comparators, touch sensing controller (20 sensors) - enables local sensor fusion and capacitive UI without host MCU. |
Pinout & Package
UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with exposed thermal pad. Pin count: 32 leads. Compatible with standard reflow profiles and IPC Class 2/3 assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDRF | Power supply inputs | Dedicated domains: VDD (digital core/SRAM), VDDA (analog), VDDRF (radio) - enable independent noise isolation and voltage scaling. |
| VSS, VSSA, VSSRF | Ground returns | Separate ground planes per domain minimize coupling between digital switching noise and sensitive RF/analog circuits. |
| OSC_IN/OSC_OUT | 32 MHz crystal interface | Single external crystal drives both system clock and RF PLL - reduces BOM and board space vs dual-crystal solutions. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset supervisor or push-button recovery. |
| PA0–PA15, PB0–PB15, PC0–PC1 | General-purpose I/Os | Up to 35 GPIOs (most 5 V-tolerant); multiple alternate functions including UART, SPI, I²C, SAI, timers - flexible peripheral routing for compact PCB layout. |
| ANT | RF antenna interface | Differential RF output with integrated balun - connects directly to PCB trace or chip antenna; no external matching required. |
| BOOT0 | Boot mode selection | Configures boot source (system memory, flash, or SRAM); used during programming or secure recovery sequences. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Balun + Single-Crystal RF Architecture | Eliminates 6–8 external RF matching components and second crystal, reducing BOM cost and PCB area by >30% vs discrete radio + MCU designs. |
| FlexPowerControl with Autonomous Peripherals | Peripherals (ADC, timers, comparators, LPUART) remain active in Stop mode with DMA offloading - enables sensor polling and event detection without waking CPU. |
| TrustZone + Secure Firmware Installation (SFI) | Hardware-enforced isolation between secure/non-secure worlds; RSS-based SFI ensures authenticated, encrypted firmware installation with rollback protection. |
| Multi-Protocol Radio Coexistence Engine | Hardware packet traffic arbitration prevents BLE/802.15.4 frame collisions during concurrent protocol operation - guarantees deterministic latency for time-critical Matter commissioning. |
| 160 nA Standby with Full Wake-Up Pin Set | 16 dedicated wake-up pins retain full interrupt capability in deepest sleep - supports instant response to physical tamper, button press, or sensor threshold crossing. |
Applications
| Smart Locks | Industrial Sensor Nodes |
|---|---|
Use Scenario: Battery-powered door lock with BLE provisioning, Matter-over-Thread remote access, and local tamper detection. IC Role / Device Role / Timing Role: Primary wireless SoC handling secure BLE pairing, Thread network joining, cryptographic key management, and real-time tamper response via comparator-triggered wake-up. Use Value: Single-chip solution eliminates separate MCU + radio, reduces bill-of-materials, and enables 5+ year coin-cell operation using 160 nA Standby mode and autonomous wake-up logic. | Use Scenario: Wireless vibration/temperature node in predictive maintenance system deployed in factory machinery. IC Role / Device Role / Timing Role: Edge AI inference accelerator with onboard ADC oversampling, FFT preprocessing, and low-latency Thread transmission of anomaly alerts. Use Value: 12-bit ADC at 2.5 Msps with hardware oversampling enables high-fidelity sensor data capture; TrustZone isolates firmware from untrusted OTA payloads. |
| Health Wearables | Home Energy Monitors |
Use Scenario: Compact wearable tracking heart rate, SpO₂, and motion using optical sensors and BLE audio streaming. IC Role / Device Role / Timing Role: Real-time sensor hub with SAI-driven audio codec interface, LE Audio broadcast (Auracast), and secure biometric data storage in protected SRAM. Use Value: Integrated SAI and LE Audio support enable direct connection to low-power codecs; 64-Kbyte parity-protected SRAM safeguards health data integrity. | Use Scenario: Smart electricity meter communicating via Matter to home gateway and utility backend using Thread and cloud-uplink over Wi-Fi bridge. IC Role / Device Role / Timing Role: Secure edge coordinator managing local Thread mesh, energy measurement via analog peripherals, and encrypted firmware updates via TF-M. Use Value: Dual-protocol radio allows seamless interoperability across Matter ecosystems; SMPS + LDO regulator supports wide 1.71–3.6 V input range from AC/DC or battery sources. |
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 | BLE-only radio (no IEEE 802.15.4 MAC/PHY); lacks integrated Thread/Matter stack; 1 MB flash but no ECC or 100k-cycle endurance rating. | Suitable for BLE-centric devices only; requires external MCU or software stack porting for Matter/Thread. | Select when BLE is sole protocol need and security requirements are below PSA Level 3. |
| Silicon Labs EFR32MG24 | Proprietary 2.4 GHz + BLE + Zigbee®/Thread PHY; no TrustZone; uses Secure Boot v2 instead of TF-M; higher active current (RX 5.8 mA vs 4.4 mA). | Strong in Zigbee® lighting control; limited BLE audio and direction finding support compared to WBA52. | Prefer for legacy Zigbee® deployments where Matter migration path is not required. |
Compared with Nordic nRF52840 and Silicon Labs EFR32MG24, the STM32WBA52CEU6 uniquely combines dual-protocol hardware acceleration, PSA-certifiable TrustZone security, and sub-µA low-power modes - making it optimal for next-generation Matter-compliant, battery-operated edge devices requiring long-term firmware trust and regulatory compliance.
Availability
STM32WBA52CEU6 is available at Aetrix Electronics and suitable for smart locks, industrial sensor nodes, health wearables, and home energy monitors requiring stable component supply, long-lifecycle assurance, and full regulatory certification support.
Supply support for STM32WBA52CEU6 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, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive semiconductors.
The STM32WBA series is ST's first wireless MCU family built on Cortex-M33 with TrustZone, targeting secure, ultra-low-power IoT endpoints requiring Matter, Thread, BLE, and Zigbee® interoperability in a single silicon platform.
FAQ
What wireless protocols does the STM32WBA52CEU6 support natively in hardware?
The STM32WBA52CEU6 integrates a single 2.4 GHz transceiver with hardware-accelerated Bluetooth LE 5.3 (including LE Audio, Direction Finding, and Isochronous Channels) and IEEE 802.15.4-2015 PHY/MAC layers. This enables native, concurrent support for Thread 1.3, Matter 1.0, and Zigbee® 3.0 without external protocol stacks or co-processors.
Does the STM32WBA52CEU6 require an external balun or matching network?
No. The device includes an integrated balun and supports single-crystal operation (32 MHz), eliminating the need for external RF matching components or a second crystal. This reduces BOM count, PCB area, and RF tuning complexity while maintaining ETSI/FCC/ARIB compliance out-of-box.
How does TrustZone implementation differ between STM32WBA52CEU6 and legacy STM32L4/L5 MCUs?
Unlike STM32L4/L5, the WBA52 implements TrustZone at silicon level with Global TrustZone Controller (GTZC), secure boot entry, and hardware-enforced secure hide protection area (HDP). It also embeds Root Secure Services (RSS) for Secure Firmware Installation (SFI) and supports TF-M out-of-the-box - enabling PSA Level 3 certification without external secure elements.
What is the minimum supply voltage and lowest active current in Run mode?
The STM32WBA52CEU6 operates from 1.71 V to 3.6 V. In Run mode at 3.3 V and 100 MHz, typical current consumption is 23 µA/MHz. With SMPS enabled and voltage scaling, active current can be further reduced - e.g., 18 µA/MHz at 1.8 V core voltage - while maintaining full peripheral functionality.
STM32WBA52CEU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WBA
- Package/Case:
- 48-UFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.3
- Modulation:
- -
- Frequency:
- 2.4GHz
- Data Rate (Max):
- -
- Power - Output:
- -
- Sensitivity:
- -
- Memory Size:
- 512kB Flash, 96kB RAM
- Serial Interfaces:
- ADC, I2C, SPI, UART, USART
- GPIO:
- -
- Voltage - Supply:
- 1.71V ~ 3.6V
- Current - Receiving:
- -
- Current - Transmitting:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-UFQFPN (7x7)
STM32WBA52CEU6 FAQ
1.How can I place an order for STM32WBA52CEU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA52CEU6 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 STM32WBA52CEU6 reliable?
The price and inventory of STM32WBA52CEU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA52CEU6 is usually 5 days.
3.What payment methods are accepted for STM32WBA52CEU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA52CEU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA52CEU6?
STM32WBA52CEU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA52CEU6 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 STM32WBA52CEU6?
For technical support, including STM32WBA52CEU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA52CEU6 requirements.
6.How does Aetrix verify that STM32WBA52CEU6 is sourced from the original manufacturer or authorized distributors?
All STM32WBA52CEU6 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 STM32WBA52CEU6 meets industry standards.
7.What is the process for return or replacement of STM32WBA52CEU6?
All STM32WBA52CEU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA52CEU6, 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 STM32WBA52CEU6 part is unused and in its original packaging.
Return procedure for STM32WBA52CEU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WBA52CEU6 Tags
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ESP8266EX
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