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STMicroelectronics STM32WBA52CGU7
- Part No.:
- STM32WBA52CGU7
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WBA52CGU7.pdf
- Description:
- IC RF TXRX+MCU BLE 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,504
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Product details
Overview
STM32WBA52CGU7 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 6.0 and IEEE 802.15.4 (Thread/Matter/Zigbee®). It delivers -96 dBm RX sensitivity at 1 Mbps BLE, +10 dBm programmable TX output, 1 Mbyte ECC flash, and operates from 1.71–3.6 V across -40 to 105°C - deployed in secure, battery-powered IoT edge nodes requiring concurrent protocol stack execution.
For engineers reviewing the STM32WBA52CGU7 datasheet, STM32WBA52CGU7 pinout, STM32WBA52CGU7 application, or STM32WBA52CGU7 equivalent, key selection criteria include its dual-protocol RF coexistence capability, TrustZone-enabled secure boot and firmware upgrade, ultra-low-power Stop mode (6.5 µA with 64-Kbyte SRAM), and WLCSP41 package suitability for space-constrained sensor hubs and wearables.
Technical Context
The device integrates a dual-mode 2.4 GHz transceiver with hardware packet arbitration for simultaneous BLE and IEEE 802.15.4 operation, enabling Matter-over-Thread and BLE mesh interoperability. Its radio subsystem includes an integrated balun, single-crystal timing, and support for external PA, meeting ETSI EN 300 328, FCC Part 15, and ARIB STD-T66 compliance without external RF front-end components.
TrustZone architecture enforces hardware-isolated secure and non-secure worlds, with securable I/Os, memories, and peripherals. The Root of Trust leverages unique boot entry, Secure Hide Protection Area (HDP), and embedded RSS for SFI - enabling certified secure firmware installation and TF-M-based over-the-air updates with DPA-resistant AES and PKA accelerators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M33 @ up to 100 MHz with TrustZone®, MPU, DSP, and FPU - enables real-time deterministic execution of dual-stack wireless protocols and cryptographic operations. |
| RF Performance | -96 dBm BLE RX sensitivity (1 Mbps); +10 dBm TX output with 1 dB steps - ensures robust link budget in compact PCB layouts with minimal external components. |
| Memory | 1 Mbyte flash (ECC, 100k write cycles), 128-Kbyte SRAM (64 KB with parity) - supports secure OTA updates and runtime data integrity verification. |
| Power Modes | 6.5 µA Stop mode (64-Kbyte SRAM retained), 160 nA Standby (16 wake-up pins) - extends battery life in intermittently active sensor endpoints. |
| Security | Two DPA-resistant AES co-processors, PKA, HASH, NIST SP800-90B TRNG, 96-bit UID, active tampers - meets PSA Level 3 and SESIP certification prerequisites. |
| Wireless Protocols | Bluetooth LE 6.0 (LE Audio, Direction Finding, Isochronous Channels), IEEE 802.15.4-2015 PHY/MAC - enables Matter-certified end devices and multi-protocol gateway coexistence. |
| Package | WLCSP41 (2.76 × 2.98 mm, 0.4 mm pitch) - supports miniaturized wearable and medical patch designs with high I/O density. |
Pinout & Package
STM32WBA52CGU7 uses the WLCSP41 (2.76 × 2.98 mm) package with 0.4 mm ball pitch and 41 solder balls. Pin assignment follows ST's standardized WLCSP layout for STM32WBA5x series, optimized for RF isolation and low-inductance ground return paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_RF / VDD_PA | RF power supply | Dedicated 1.2 V supply for radio block; decoupling critical for EMI suppression and RX sensitivity stability. |
| ANT | RF antenna interface | Differential RF port routed to integrated balun; requires controlled-impedance microstrip to external antenna or matching network. |
| OSC_IN / OSC_OUT | 32 MHz crystal oscillator terminals | Single-ended 32 MHz crystal connection; enables precise radio timing and eliminates need for TCXO in most applications. |
| VDDA / VSSA | Analog power/ground | Isolated analog domain for ADC, comparators, and RF biasing - mandatory separation from digital VDD/VSS for noise immunity. |
| BOOT0 | Boot mode selection | Pulled low during reset to enable main flash boot; tied high only for system memory bootloader activation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Balun | Eliminates discrete RF matching components, reducing BOM count and PCB area while maintaining -96 dBm BLE sensitivity. |
| FlexPowerControl Architecture | Enables autonomous peripheral operation (e.g., ADC sampling, timer triggers) in Stop mode without CPU wake-up - cuts average system current by >50% in duty-cycled sensing. |
| SAI Audio Interface | Supports I²S/PCM with DMA-driven stereo audio streaming - enables LE Audio Auracast™ broadcast receivers in hearing aids and assistive listening devices. |
| PTA (Packet Traffic Arbitration) | Hardware scheduler resolves BLE/802.15.4 packet collisions in real time - guarantees deterministic latency for time-sensitive Matter commissioning and Thread routing. |
| Secure Firmware Installation (SFI) | Root Secure Services (RSS) validate signed firmware images before flash programming - prevents unauthorized code injection during field updates. |
Applications
| Smart Home Sensor Hub | Medical Wearable Patch |
|---|---|
Use Scenario: Compact battery-powered hub aggregating temperature, humidity, and occupancy data via BLE and Thread sensors. IC Role / Device Role / Timing Role: Dual-protocol wireless SoC executing Matter controller stack and BLE peripheral services concurrently with sub-100 µs PTA arbitration. Use Value: Single-chip solution eliminates external transceivers and reduces bill-of-materials cost by 32% versus discrete MCU+radio designs. | Use Scenario: Disposable ECG patch transmitting biometric data over BLE LE Audio to smartphone and cloud via Matter-over-Thread gateway. IC Role / Device Role / Timing Role: Secure wireless MCU handling encrypted sensor acquisition, LE Audio encoding, and authenticated OTA updates using TrustZone-isolated firmware partitions. Use Value: 6.5 µA Stop mode with 64-Kbyte SRAM retention enables 30-day battery life on coin cell while preserving session keys and calibration data. |
| Industrial Predictive Maintenance Node | Asset Tracking Beacon |
Use Scenario: Vibration and temperature monitoring node deployed in factory machinery, reporting anomalies via BLE mesh and Thread backbone. IC Role / Device Role / Timing Role: Real-time wireless MCU running FFT-based vibration analysis on Cortex-M33 DSP extensions while managing concurrent BLE advertising and Thread routing. Use Value: Hardware-accelerated AES and PKA enable secure sensor data signing without CPU overhead, preserving 87% of compute bandwidth for analytics. | Use Scenario: GPS-denied indoor asset tracker using AoA/AoD for centimeter-level localization in warehouses. IC Role / Device Role / Timing Role: Direction-finding-capable BLE radio with hardware timestamping and phase measurement engine synchronized to 32 MHz crystal. Use Value: Integrated RF front-end and calibrated IQ sampling eliminate external RFICs, reducing tracker height to <0.8 mm for embedding in thin logistics tags. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiprotocol wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52840 DK | BLE 5.0 + IEEE 802.15.4; no TrustZone, no SMPS, 1 MB flash but no ECC; 2.4 GHz RX sensitivity -96 dBm (BLE), -103 dBm (802.15.4) | Lacks hardware root of trust and secure firmware update infrastructure; requires external crypto IC for PSA Level 3 compliance. | Select when BLE-only or legacy Thread 1.1.1 is sufficient and security certification is not required. |
| TI CC2652RB | BLE 5.0 + IEEE 802.15.4; integrated RF BAW resonator; no TrustZone; 352 KB flash; -100 dBm 802.15.4 RX sensitivity | No Arm TrustZone or secure boot; relies on software-based TEE; limited SRAM (80 KB) constrains concurrent protocol stacks. | Select for cost-sensitive industrial sensor nodes where RF sensitivity outweighs security requirements. |
Compared with Nordic nRF52840 and TI CC2652RB, STM32WBA52CGU7 uniquely combines hardware-enforced TrustZone security, SMPS efficiency (0.9 µA Standby with 64-KB SRAM), and PTA-based dual-protocol arbitration - making it the only option qualified for Matter 1.3 certified end devices requiring both BLE LE Audio and Thread 1.3.0 conformance.
Availability
STM32WBA52CGU7 is available at Aetrix Electronics and suitable for smart home sensor hubs, medical wearable patches, industrial predictive maintenance nodes, and asset tracking beacons requiring stable component supply across multi-year production cycles.
Supply support for STM32WBA52CGU7 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, MEMS, and wireless solutions for industrial, automotive, and consumer markets.
The STM32WBA5x product line targets secure, ultra-low-power wireless edge devices - specifically engineered to accelerate Matter and Thread ecosystem adoption with integrated RF, TrustZone, and energy-efficient architecture.
FAQ
What wireless protocols does STM32WBA52CGU7 natively support without external firmware?
STM32WBA52CGU7 natively supports Bluetooth LE 6.0 (including LE Audio, Direction Finding, and Isochronous Channels) and IEEE 802.15.4-2015 PHY/MAC in hardware. Thread 1.3.0 and Zigbee 3.0 protocol stacks run in firmware atop the radio driver, validated by ST's OpenThread and Zigbee SDKs. No external transceiver or co-processor is required for full protocol operation.
How does the PTA (Packet Traffic Arbitration) feature resolve BLE and 802.15.4 contention?
PTA is a hardware scheduler that monitors pending packets from both BLE and 802.15.4 MAC layers and arbitrates transmission slots in real time with sub-microsecond latency. It prevents RF collisions by dynamically prioritizing time-critical packets (e.g., Thread routing beacons) and deferring lower-priority BLE advertisements - ensuring deterministic behavior without software intervention.
Can STM32WBA52CGU7 operate without an external crystal?
No - the device requires a 32 MHz external crystal for RF timing accuracy and regulatory compliance. While internal RC oscillators exist for system clock backup, the 32 MHz crystal is mandatory for BLE/802.15.4 carrier frequency stability per ETSI/FCC requirements. The LSE 32 kHz crystal is optional and used only for RTC calibration or ultra-low-power timing.
What debug interfaces are supported, and is SWD available in all power modes?
STM32WBA52CGU7 supports Serial Wire Debug (SWD) and JTAG via dedicated pins. SWD remains functional down to Stop mode (but not Standby), enabling low-power debugging and register inspection during deep-sleep validation. Trace functionality requires SWO pin and is disabled in Stop mode. No debug access is available in Standby mode for security reasons.
STM32WBA52CGU7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-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 RAM
- Serial Interfaces:
- ADC, GPIO, I2C, SPI, UART, USART
- GPIO:
- 35
- 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:
- 48-UFQFPN (7x7)
STM32WBA52CGU7 FAQ
1.How can I place an order for STM32WBA52CGU7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA52CGU7 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 STM32WBA52CGU7 reliable?
The price and inventory of STM32WBA52CGU7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA52CGU7 is usually 5 days.
3.What payment methods are accepted for STM32WBA52CGU7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA52CGU7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA52CGU7?
STM32WBA52CGU7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA52CGU7 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 STM32WBA52CGU7?
For technical support, including STM32WBA52CGU7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA52CGU7 requirements.
6.How does Aetrix verify that STM32WBA52CGU7 is sourced from the original manufacturer or authorized distributors?
All STM32WBA52CGU7 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 STM32WBA52CGU7 meets industry standards.
7.What is the process for return or replacement of STM32WBA52CGU7?
All STM32WBA52CGU7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA52CGU7, 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 STM32WBA52CGU7 part is unused and in its original packaging.
Return procedure for STM32WBA52CGU7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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