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STMicroelectronics STM32WBA55CGU6TR
- Part No.:
- STM32WBA55CGU6TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WBA55CGU6TR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,804
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Product details
Overview
STM32WBA55CGU6TR 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), IEEE 802.15.4 (Thread/Matter/Zigbee®), RX sensitivity of −96 dBm (BLE @ 1 Mbps), programmable +10 dBm output 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 STM32WBA55CGU6TR datasheet, STM32WBA55CGU6TR pinout, STM32WBA55CGU6TR application, or STM32WBA55CGU6TR equivalent, key selection considerations include TrustZone-enabled secure boot, dual-protocol radio coexistence, 1 Mbyte ECC flash with 100k write cycles, 128-Kbyte SRAM (64 KB with parity), and support for Auracast™, direction finding, and Thread 1.3.1/Matter 1.2 stack deployment.
Technical Context
This MCU integrates a dual-protocol 2.4 GHz transceiver with hardware-accelerated packet arbitration, enabling concurrent BLE and IEEE 802.15.4 MAC/PHY execution without host CPU intervention. Its FlexPowerControl architecture supports autonomous peripheral operation-including LPTIMs, comparators, and ADC oversampling-in Stop 1 mode at 0.9 µA with 64-Kbyte SRAM retention.
The Arm Cortex-M33 core runs up to 100 MHz with ART Accelerator (8-Kbyte I-cache), delivering 410 CoreMark® (4.10 CoreMark/MHz), while TrustZone enforces hardware-isolated secure/non-secure worlds for firmware installation (SFI), cryptographic key storage (RHUK), and runtime attestation via TF-M.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 100 MHz with TrustZone, MPU, DSP, and single-precision FPU |
| Wireless Radio | 2.4 GHz transceiver supporting Bluetooth LE 5.3 & IEEE 802.15.4-2015 PHY/MAC; −96 dBm RX sensitivity (BLE), +10 dBm TX output with 1 dB steps |
| Memory | 1 Mbyte flash (ECC, 256 KB rated for 100k cycles), 128-Kbyte SRAM (64 KB with parity), 512-byte OTP |
| Power Consumption | 160 nA Standby (16 wake-up pins), 0.9 µA Standby w/64-KB SRAM, 6.5 µA Stop w/64-KB SRAM, 23 µA/MHz Run @ 3.3 V |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (16-bit with oversampling), two ultra-low-power comparators, temperature sensor, VREFINT |
| Security | TrustZone isolation, Root of Trust (HDP, unique boot entry), SFI with RSS, AES/DPA-resistant SAES & PKA, NIST SP800-90B TRNG, 96-bit UID |
| Package | UFQFPN32 (5 × 5 mm, 0.5 mm pitch), 32-pin, ECOPACK2-compliant |
Pinout & Package
STM32WBA55CGU6TR is housed in a 32-pin Ultra Thin Fine Pitch Quad Flat No-lead (UFQFPN32) package measuring 5 × 5 mm with 0.5 mm pitch, optimized for compact PCB layouts and RF performance stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 1.71–3.6 V analog/digital core supply; powers internal LDO and SMPS controller |
| VSS | GND reference | Dedicated ground plane connection for noise-sensitive RF/analog domains |
| PA0 | General-purpose I/O / Wake-up | Configurable as wake-up source in Stop/Standby modes; supports touch sensing input |
| PA13 | SWDIO debug interface | Serial Wire Debug data I/O; enables non-intrusive firmware debugging and programming |
| PA14 | SWCLK debug interface | Serial Wire Debug clock input; synchronizes debug communication with host debugger |
| PA15 | JTDI / SPI1_NSS | Optional JTAG Test Data In or SPI1 chip select; configurable via SYSCFG register |
| PC13 | LSE oscillator input | Connects to external 32.768 kHz crystal for RTC calendar and low-power timing |
| RF_IO | RF transceiver antenna port | Differential RF I/O requiring external matching network and balun integration per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Multi-protocol radio coexistence | Hardware-based packet traffic arbitration enables simultaneous BLE and IEEE 802.15.4 operation without CPU scheduling overhead |
| Secure firmware lifecycle | Root Secure Services (RSS) and Secure Firmware Installation (SFI) enforce authenticated, encrypted OTA updates with rollback protection |
| Ultra-low-power autonomy | Two low-power timers (LPTIM1/LPTIM2), comparators, and ADC oversampling remain active in Stop mode with 6.5 µA total current |
| RF regulatory compliance | Pre-certified for ETSI EN 300 328, FCC Part 15, ARIB STD-T66; integrated balun reduces BOM count and layout sensitivity |
| Audio-ready interface | SAI peripheral supports I²S, PCM, and SPDIF protocols with DMA-driven streaming-enabling LE Audio Auracast™ sink implementation |
Applications
| Smart Lock System | Thread Border Router |
|---|---|
Use Scenario: Battery-powered door lock with BLE provisioning and Matter-over-Thread commissioning. IC Role / Device Role / Timing Role: Primary MCU executing secure BLE pairing, Thread 1.3.1 stack, and Matter 1.2 application layer with hardware crypto acceleration. Use Value: TrustZone isolates secure boot and credential storage; integrated radio eliminates external transceiver BOM and timing skew between protocol stacks. | Use Scenario: Low-power residential gateway bridging BLE devices to IPv6-based Thread networks. IC Role / Device Role / Timing Role: Dual-role node acting as BLE proxy and Thread border router with synchronized timekeeping via RTC and LSE. Use Value: Concurrent BLE/802.15.4 MAC execution enables seamless device discovery and commissioning without protocol switching latency. |
| Industrial Sensor Hub | LE Audio Auracast™ Transmitter |
Use Scenario: Wireless vibration/temperature sensor node deployed in predictive maintenance systems. IC Role / Device Role / Timing Role: Edge AI inference accelerator interfacing with ADC, comparators, and LPTIMs for event-triggered sampling and BLE advertisement bursts. Use Value: 160 nA Standby + 16 wake-up pins enable years of operation on coin-cell; hardware CRC and ECC ensure data integrity over noisy industrial RF environments. | Use Scenario: Broadcast audio transmitter for public address systems using Bluetooth LE Audio Isochronous Channels. IC Role / Device Role / Timing Role: Real-time audio encoder and packetizer feeding SAI → radio path with deterministic latency under 10 ms. Use Value: Dedicated SAI with DMA and 2.5 Msps ADC supports 48 kHz stereo capture; +10 dBm TX power ensures robust coverage in large venues. |
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 @ 64 MHz; no IEEE 802.15.4 MAC offload; lower TX power (+8 dBm); lacks TrustZone and SMPS | Strong BLE-only use cases; limited Thread/Matter scalability due to software MAC overhead | Select when BLE-centric design prioritizes mature SDK and community support over multi-protocol hardware acceleration |
| Silicon Labs EFR32MG24 | ARM Cortex-M33 @ 78 MHz; proprietary Simplicity Studio stack; higher RX sensitivity (−104.5 dBm); no TrustZone memory isolation | High-sensitivity mesh deployments; requires external secure element for Matter root-of-trust | Select for long-range sub-GHz + 2.4 GHz hybrid designs where RF link budget outweighs MCU security requirements |
Compared with Nordic nRF52840 DK and Silicon Labs EFR32MG24, STM32WBA55CGU6TR uniquely combines TrustZone-enforced secure boot, hardware-accelerated dual-protocol MAC, and integrated SMPS for <1 µA ultra-low-power operation-making it optimal for certified Matter/Thread end devices requiring both security and energy efficiency.
Availability
STM32WBA55CGU6TR is available at Aetrix Electronics and suitable for smart lock systems, Thread border routers, industrial sensor hubs, and LE Audio Auracast™ transmitters requiring stable component supply across multi-year production cycles.
Supply support for STM32WBA55CGU6TR 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 analog components for industrial, automotive, and IoT markets.
The STM32WBA series is ST's first wireless MCU family built on Arm Cortex-M33 with TrustZone, targeting secure, low-power, multi-protocol IoT endpoints compliant with Matter, Thread, and Bluetooth LE Audio standards.
FAQ
What wireless protocols does STM32WBA55CGU6TR natively support in hardware?
STM32WBA55CGU6TR integrates a single 2.4 GHz radio with hardware-accelerated MAC layers for Bluetooth LE 5.3 (including LE Audio, Direction Finding, and Isochronous Channels) and IEEE 802.15.4-2015 (supporting Thread 1.3.1, Matter 1.2, and Zigbee® 3.0). Both protocols operate concurrently via hardware packet arbitration-no software MAC stack required for basic PHY/MAC functions.
Does STM32WBA55CGU6TR support secure over-the-air (OTA) firmware updates?
Yes. It implements Secure Firmware Installation (SFI) via embedded Root Secure Services (RSS), enabling authenticated, encrypted, and version-verified OTA updates. The hardware root of trust includes a unique boot entry, Secure Hide Protection Area (HDP), and TF-M–compliant secure boot flow with rollback protection and signature validation using DPA-resistant PKA and SAES accelerators.
What is the lowest power consumption mode with SRAM retention?
The lowest power mode with full 64-Kbyte SRAM retention is Standby mode at 0.9 µA, achieved using the internal LDO regulator and retaining backup registers, RTC, and 16 wake-up pins. This mode supports fast wake-up (<5 µs) and is ideal for infrequent sensor polling or BLE advertising intervals in battery-constrained devices.
Can STM32WBA55CGU6TR drive an external power amplifier (PA)?
Yes. The RF_IO pin supports external PA integration via dedicated control signals (e.g., PA_EN) and configurable GPIOs. The datasheet specifies RF output matching network guidelines and provides reference schematics for +20 dBm PA configurations, maintaining ETSI/FCC compliance through calibrated TX power ramping and spectral mask adherence.
STM32WBA55CGU6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4, Bluetooth
- Protocol:
- Bluetooth, Zigbee®
- Modulation:
- -
- Frequency:
- -
- Data Rate (Max):
- -
- Power - Output:
- -
- Sensitivity:
- -
- Memory Size:
- -
- Serial Interfaces:
- GPIO, HCI, I2S, UART, USART
- GPIO:
- -
- Voltage - Supply:
- -
- Current - Receiving:
- -
- Current - Transmitting:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-UFQFPN (7x7)
STM32WBA55CGU6TR FAQ
1.How can I place an order for STM32WBA55CGU6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA55CGU6TR 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 STM32WBA55CGU6TR reliable?
The price and inventory of STM32WBA55CGU6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA55CGU6TR is usually 5 days.
3.What payment methods are accepted for STM32WBA55CGU6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA55CGU6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA55CGU6TR?
STM32WBA55CGU6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA55CGU6TR 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 STM32WBA55CGU6TR?
For technical support, including STM32WBA55CGU6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA55CGU6TR requirements.
6.How does Aetrix verify that STM32WBA55CGU6TR is sourced from the original manufacturer or authorized distributors?
All STM32WBA55CGU6TR 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 STM32WBA55CGU6TR meets industry standards.
7.What is the process for return or replacement of STM32WBA55CGU6TR?
All STM32WBA55CGU6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA55CGU6TR, 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 STM32WBA55CGU6TR part is unused and in its original packaging.
Return procedure for STM32WBA55CGU6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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