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STMicroelectronics STM32WBA52CGU6
- Part No.:
- STM32WBA52CGU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WBA52CGU6.pdf
- Description:
- IC RF TXRX+MCU BLE 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
STM32WBA52CGU6 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 (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 in Standby mode. It targets secure, battery-powered IoT edge nodes such as smart locks and sensor hubs.
For engineers reviewing the STM32WBA52CGU6 datasheet, STM32WBA52CGU6 pinout, STM32WBA52CGU6 application, or STM32WBA52CGU6 equivalent, key selection criteria include its dual-protocol radio coexistence, TrustZone-enabled secure boot and firmware upgrade, 1 Mbyte ECC flash with 100k write cycles, and support for Auracast™/AOA/AOD in compact WLCSP41 (2.76 × 2.98 mm) package.
Technical Context
This device integrates a dual-protocol 2.4 GHz RF transceiver with hardware-accelerated Bluetooth LE and IEEE 802.15.4 MAC/PHY layers, enabling concurrent or time-sliced protocol operation. Its FlexPowerControl architecture supports autonomous peripheral operation-including LPTIMs, comparators, and ADC oversampling-down to Stop 1 mode with 64-Kbyte SRAM retention at 6.5 µA.
The Cortex-M33 core runs at up to 100 MHz with ART Accelerator enabling zero-wait-state flash execution, while TrustZone enforces strict isolation between secure firmware (e.g., TF-M), non-secure application code, and securable peripherals including SAES, PKA, and RNG compliant with NIST SP800-90B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 100 MHz with TrustZone, FPU, and DSP extensions - enables real-time signal processing and secure partitioning of firmware tasks. |
| Wireless Protocols | Bluetooth LE 5.3 (including LE Audio, Direction Finding, Mesh) and IEEE 802.15.4-2015 (Thread v1.3, Matter 1.0, Zigbee 3.0) - supports certified multi-stack deployment 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, and ARIB STD-T66 regulatory limits. |
| Memory | 1 Mbyte flash (ECC, 256 Kbytes rated for 100k cycles), 128-Kbyte SRAM (64 KB with parity), 512-byte OTP - ensures data integrity and long-term field reliability for OTA updates. |
| Power Modes | 160 nA Standby (16 wake-up pins), 6.5 µA Stop (64-Kbyte SRAM retained), 23 µA/MHz Run - extends battery life in coin-cell–powered devices beyond 10 years. |
| Security | Root of trust via unique boot entry, HDP, SFI with RSS, RHUK-based secure storage, DPA-resistant SAES/PKA/HASH, and active tamper detection - satisfies PSA Level 3 and SESIP certification requirements. |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (16-bit effective with oversampling), two ultra-low-power comparators, VREFINT, and temperature sensor - enables high-accuracy local sensing without external components. |
Pinout & Package
STM32WBA52CGU6 is housed in a 41-ball WLCSP (2.76 × 2.98 mm, 0.4 mm pitch), optimized for space-constrained IoT endpoints. The package supports single-crystal 32 MHz operation and integrates balun functionality to minimize external RF components.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.71–3.6 V) | Supplies core, analog, and RF domains; supports dynamic voltage scaling between LDO and SMPS modes. |
| VSS | Ground reference | Dedicated analog/digital ground pins ensure low-noise ADC and RF performance; requires separate PCB planes per datasheet layout guidelines. |
| OSC_IN / OSC_OUT | 32 MHz crystal oscillator interface | Drives system clock and RF timing; internal load capacitors eliminate need for external caps in most designs. |
| RF_P / RF_N | Differential RF transceiver I/O | Direct connection to antenna or matching network; integrated balun reduces BOM count and improves impedance stability across temperature. |
| BOOT0 | Boot mode selection | Pulled low for main flash boot; used with NRST to enter system memory bootloader for field recovery or initial programming. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset supervisor or push-button recovery with debounced timing per spec. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD1 | General-purpose I/Os | Up to 35 GPIOs (most 5 V-tolerant); support multiple alternate functions including UART, SPI, I²C, SAI, and touch sensing controller inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-protocol radio | Eliminates external transceiver and protocol stack offload MCU, reducing BOM cost and PCB area by >30% versus discrete solutions. |
| TrustZone + TF-M support | Enables PSA-certifiable secure firmware installation, update, and runtime isolation-critical for Matter-compliant device certification. |
| FlexPowerControl architecture | Allows DMA-driven ADC sampling, timer-triggered radio wake-up, and comparator event handling in Stop mode without CPU intervention. |
| Single-crystal 32 MHz operation | Removes need for separate 32 kHz LSE crystal, simplifying layout and reducing component count while maintaining RTC accuracy and RF timing stability. |
| Hardware-accelerated crypto | SAES (DPA-resistant), PKA, HASH, and TRNG deliver >10× faster AES-128-GCM and ECDSA signing vs. software-only implementation-essential for low-latency Matter commissioning. |
Applications
| Smart Lock System | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered door lock with BLE provisioning, Matter-over-Thread commissioning, and local biometric verification. IC Role / Device Role / Timing Role: Primary application processor and secure radio SoC; manages BLE pairing, Thread network joining, cryptographic key derivation, and real-time motor control timing via TIM1. Use Value: Single-chip solution eliminates external radio, secure element, and motor driver ICs-reducing bill-of-materials and enabling sub-20 mm² PCB footprint. | Use Scenario: Wireless vibration/temperature monitor deployed in factory machinery with 10-year battery life requirement. IC Role / Device Role / Timing Role: Autonomous sensor hub with ultra-low-power ADC oversampling, LPTIM-triggered BLE advertising, and secure OTA firmware validation. Use Value: 160 nA Standby current and hardware packet arbitration enable reliable 10+ year operation on CR2032; integrated balun ensures consistent RF range across thermal drift. |
| LE Audio Auracast™ Transmitter | Home Automation Bridge |
Use Scenario: Compact audio transmitter for public venues broadcasting synchronized audio streams to multiple BLE headphones. IC Role / Device Role / Timing Role: Real-time audio encoder (via SAI + Cortex-M33 DSP) and isochronous channel scheduler; maintains precise inter-stream timing using hardware RTC calibration. Use Value: On-chip SAI interface and low-jitter 32 MHz crystal support <50 µs audio sync error-meeting Auracast™ broadcast latency requirements without external clock conditioning. | Use Scenario: Matter-compliant hub connecting legacy Zigbee and new Thread devices to cloud services. IC Role / Device Role / Timing Role: Dual-stack coordinator managing concurrent Zigbee 3.0 and Thread 1.3 networks; uses PTA interface for RF interference mitigation during coexistence. Use Value: Hardware PTA arbitration prevents packet loss during simultaneous BLE advertising and IEEE 802.15.4 transmission-ensuring seamless interoperability across protocols. |
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 | BLE 5.0 + IEEE 802.15.4 only; no TrustZone, no SMPS, no hardware Matter stack acceleration; 1 MB flash but no ECC. | Lacks native Matter 1.0 certification path and secure firmware upgrade infrastructure; requires external secure element for PSA compliance. | Select when BLE-centric use case dominates and Matter/Thread security requirements are minimal. |
| Silicon Labs EFR32MG24 | Multi-band (2.4 GHz + Sub-GHz) radio; higher TX power (+20 dBm); no Arm TrustZone; proprietary Simplicity Studio toolchain. | Superior RF link budget for long-range industrial mesh; lacks Arm ecosystem alignment and TF-M integration for Matter. | Select when Sub-GHz coexistence or extended range (>1 km) is mandatory and Arm software portability is secondary. |
Compared with nRF52840 and EFR32MG24, STM32WBA52CGU6 uniquely combines Arm TrustZone, hardware-accelerated Matter/Thread, and ultra-low-power Stop mode operation in a single WLCSP package-enabling certified, secure, and battery-optimized IoT endpoints without architectural trade-offs.
Availability
STM32WBA52CGU6 is available at Aetrix Electronics and suitable for smart lock systems, industrial sensor nodes, LE Audio transmitters, and Matter-compliant home automation bridges requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32WBA52CGU6 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, delivering microcontrollers, sensors, power management, and automotive ICs with strong focus on energy efficiency and functional safety.
The STM32WBA series is ST's first wireless MCU family built on Arm Cortex-M33 with TrustZone, specifically engineered for Matter 1.0–certified, ultra-low-power, multi-protocol IoT endpoints requiring end-to-end security and regulatory compliance out of the box.
FAQ
What wireless certifications does STM32WBA52CGU6 support out of the box?
STM32WBA52CGU6 is pre-certified for ETSI EN 300 328 (Europe), FCC CFR47 Part 15 (USA), and ARIB STD-T66 (Japan) at the module level when used with reference antenna layouts. ST provides certified reference designs, test reports, and firmware stacks for Bluetooth SIG QDID, Thread Group, and Connectivity Standards Alliance Matter certification-reducing time-to-market by 6–9 months.
Does STM32WBA52CGU6 require an external balun or matching network?
No. STM32WBA52CGU6 integrates a fully matched on-die balun optimized for 50 Ω single-ended antenna interfaces. This eliminates external baluns, matching components, and associated layout complexity while maintaining RF performance across -40°C to 105°C. Only a simple pi-network filter is recommended for conducted emissions compliance.
How is secure firmware update implemented on this device?
Secure firmware update leverages Root Secure Services (RSS) and Secure Firmware Installation (SFI) with hardware-enforced signature verification using the Public Key Accelerator (PKA). Updates are validated against the Root Hardware Unique Key (RHUK) before execution, with rollback protection enforced via monotonic counters stored in OTP. TF-M integration provides PSA Certified Level 3 attestation.
Can STM32WBA52CGU6 operate with only a 32 MHz crystal, or is a 32 kHz crystal required?
Only the 32 MHz crystal is required. STM32WBA52CGU6 supports single-crystal operation: the 32 MHz source feeds both the system clock and RF timing circuits, while internal RC oscillators (32 kHz ±5%, 16 MHz ±1%) provide backup for RTC and low-power modes. External 32 kHz crystals are optional and only needed if higher RTC accuracy (<±20 ppm) is required.
STM32WBA52CGU6 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:
- 1MB Flash, 128kB 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)
STM32WBA52CGU6 FAQ
1.How can I place an order for STM32WBA52CGU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA52CGU6 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 STM32WBA52CGU6 reliable?
The price and inventory of STM32WBA52CGU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA52CGU6 is usually 5 days.
3.What payment methods are accepted for STM32WBA52CGU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA52CGU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA52CGU6?
STM32WBA52CGU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA52CGU6 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 STM32WBA52CGU6?
For technical support, including STM32WBA52CGU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA52CGU6 requirements.
6.How does Aetrix verify that STM32WBA52CGU6 is sourced from the original manufacturer or authorized distributors?
All STM32WBA52CGU6 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 STM32WBA52CGU6 meets industry standards.
7.What is the process for return or replacement of STM32WBA52CGU6?
All STM32WBA52CGU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA52CGU6, 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 STM32WBA52CGU6 part is unused and in its original packaging.
Return procedure for STM32WBA52CGU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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