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STMicroelectronics STM32WBA55CGU6
- Part No.:
- STM32WBA55CGU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WBA55CGU6.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,369
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Product details
Overview
STM32WBA55CGU6 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. Designed for secure, battery-powered IoT edge nodes such as smart locks and sensor hubs.
For engineers reviewing the STM32WBA55CGU6 datasheet, STM32WBA55CGU6 pinout, STM32WBA55CGU6 application, or STM32WBA55CGU6 equivalent, key selection criteria include its dual-protocol radio coexistence, TrustZone-enabled secure boot and firmware upgrade, 1 MB ECC flash with 100k write cycles, 128 KB SRAM (64 KB with parity), and support for Auracast™, direction finding, and long-range BLE.
Technical Context
The device integrates a dual-protocol 2.4 GHz RF transceiver with hardware packet arbitration and an embedded balun, enabling concurrent or time-sliced BLE and IEEE 802.15.4 operation without external RF components. Its FlexPowerControl architecture enables autonomous peripheral operation-including timers, comparators, and ADC-in Stop 1 mode with 6.5 µA current draw and 64-KB SRAM retention.
TrustZone® enforces hardware-isolated secure and non-secure worlds, with securable I/Os, memories, and peripherals. The root of trust includes unique boot entry, secure hide protection area (HDP), and embedded RSS for secure firmware installation (SFI), while TF-M support enables PSA Certified Level 3 firmware upgrades.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ up to 100 MHz with TrustZone, MPU, DSP, and FPU - enables real-time deterministic processing with hardware-enforced security isolation. |
| Wireless Support | Bluetooth LE 5.3 (2M/LE Coded/Direction Finding/Isochronous Channels) and IEEE 802.15.4-2015 PHY/MAC - supports Matter-over-Thread, Zigbee, and BLE mesh 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 programmable in 1 dB steps - meets ETSI EN 300 328, FCC Part 15, and ARIB STD-T66 regulatory requirements. |
| Memory | 1 MB flash with ECC and 256 KB rated for 100k cycles; 128 KB SRAM (64 KB with parity); 512-byte OTP - ensures data integrity and long-term reliability in field-deployed devices. |
| Power Efficiency | 160 nA Standby (16 wake-up pins), 6.5 µA Stop mode (64 KB SRAM retained), 23 µA/MHz Run mode - extends battery life in coin-cell–powered sensors and wearables. |
| Security Accelerators | Dual AES coprocessors (one DPA-resistant), PKA, HASH, NIST SP800-90B TRNG, 96-bit UID, active tampers - enables certified secure boot, key provisioning, and OTA updates per PSA Level 3. |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (16-bit with oversampling), two ultra-low-power comparators, touch sensing controller (20 sensors) - supports high-precision sensor fusion and capacitive UI in compact form factors. |
Pinout & Package
STM32WBA55CGU6 is housed in a 48-pin UFQFPN (7 × 7 mm) package with 0.5 mm pitch, optimized for RF performance and PCB space efficiency in compact IoT modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDRF | Power supply inputs | Dedicated domains for digital core, analog, and RF sections - enable independent noise filtering and voltage scaling for optimal signal integrity. |
| VBAT | Backup power supply | Supports RTC and backup registers during main power loss - maintains timekeeping and critical state across power cycles. |
| OSC_IN/OSC_OUT | 32 MHz crystal oscillator interface | Drives system clock and RF timing reference - single-crystal operation reduces BOM count and board area. |
| LSE_IN/LSE_OUT | 32.768 kHz low-speed crystal interface | Feeds RTC calendar and low-power timer clocks - enables precise timekeeping in Stop/Standby modes. |
| ANT | RF antenna connection | Differential RF output with integrated balun - eliminates need for external matching network, simplifying antenna design and certification. |
| PA_EN, RX_EN, TX_EN | RF power amplifier control | Hardware-controlled enable signals for external PA integration - supports +20 dBm output extensions while maintaining protocol compliance. |
| BOOT0 | Boot mode selection | Configures boot source (system memory, flash, or SRAM) at reset - essential for secure firmware recovery and DFU workflows. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable initialization under brown-out or ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.4 GHz RF transceiver | Single-chip solution eliminating discrete RF front-end, reducing BOM cost and layout complexity for certified wireless designs. |
| TrustZone + Secure Firmware Installation (SFI) | Hardware-enforced secure boot and authenticated firmware update via embedded Root Secure Services (RSS), meeting PSA Certified Level 3 requirements. |
| FlexPowerControl architecture | Enables DMA-driven autonomous peripherals (ADC, timers, comparators) in Stop mode - allows sensor polling and event detection without CPU wake-up. |
| ART Accelerator with 8 KB cache | Delivers 0-wait-state execution from flash at 100 MHz - achieves 410 CoreMark® (4.10 CoreMark/MHz) without external memory. |
| Multi-protocol radio arbitration | Hardware-managed time-slicing and priority-based packet scheduling between BLE and IEEE 802.15.4 - prevents interference and guarantees QoS in mixed-traffic networks. |
Applications
| Smart Home Hub | Industrial Wireless Sensor Node |
|---|---|
Use Scenario: Central coordinator aggregating BLE temperature sensors, Thread-enabled lighting controls, and Matter-certified door locks. IC Role / Device Role / Timing Role: Dual-protocol wireless SoC acting as Matter border router and BLE proxy, synchronizing time-critical commands across heterogeneous protocols. Use Value: Eliminates separate BLE/Thread radios and gateway MCU, reducing bill-of-materials by 30% and enabling sub-100 ms command latency across protocols. | Use Scenario: Battery-powered vibration and temperature monitor deployed in predictive maintenance systems on rotating machinery. IC Role / Device Role / Timing Role: Ultra-low-power edge node performing local FFT analysis via DSP-enhanced Cortex-M33, then transmitting alerts via BLE long-range or Thread mesh. Use Value: 6.5 µA Stop mode with 64 KB SRAM retention enables multi-year operation on AA batteries while preserving firmware context across wake-ups. |
| Secure Wearable Health Monitor | Commercial Building Access Control |
Use Scenario: Medical-grade wearable collecting ECG, SpO₂, and motion data, transmitting encrypted streams to smartphone or cloud via BLE Audio and LE Secure Connections. IC Role / Device Role / Timing Role: Secure wireless MCU handling biometric acquisition, cryptographic signing (PKA + AES), and Auracast™ audio streaming with sub-20 ms latency. Use Value: On-chip TRNG (NIST SP800-90B compliant) and DPA-resistant crypto accelerators ensure HIPAA-compliant data confidentiality without external secure element. | Use Scenario: Smart lock module verifying credentials via BLE proximity check, NFC fallback, and secure OTA firmware updates over Thread mesh. IC Role / Device Role / Timing Role: Root-of-trust anchor managing secure boot, password-protected debug, and remote attestation using HDP and RDP lifecycle controls. Use Value: Hardware-enforced TrustZone isolation prevents physical tampering attacks on credential storage and enables zero-touch provisioning via SFI and TF-M. |
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 only (no Matter/Thread stack support in silicon); no TrustZone; 1 MB flash but no ECC; 256 KB RAM without parity. | Requires external software stack for Matter; lacks hardware root of trust for secure firmware updates; higher power in deep sleep (≈2 µA vs. 160 nA). | Select when BLE-only or legacy 802.15.4 use cases dominate and PSA-level security is not required. |
| Silicon Labs EFR32MG24 | Dedicated multi-band radio (sub-GHz + 2.4 GHz); no Arm TrustZone; proprietary Secure Boot; 1.5 MB flash without ECC; 256 KB RAM. | Superior RF range in sub-GHz bands; limited BLE audio support; no native Auracast™ or LE Isochronous Channels; requires external secure element for PSA L3. | Select for hybrid sub-GHz/2.4 GHz deployments where long-range outdoor coverage outweighs on-chip security and BLE audio features. |
Compared with nRF52840 and EFR32MG24, STM32WBA55CGU6 uniquely integrates TrustZone, ECC flash, and hardware-accelerated Matter/Thread support in a single die-reducing system-level security validation effort and enabling certified BLE Audio and Auracast™ endpoints without external components.
Availability
STM32WBA55CGU6 is available at Aetrix Electronics and suitable for smart home hubs, industrial wireless sensor nodes, secure wearables, and commercial access control systems requiring stable component supply and long-term manufacturability.
Supply support for STM32WBA55CGU6 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, analog ICs, power solutions, and MEMS sensors for industrial, automotive, and consumer markets.
The STM32WBA series targets secure, ultra-low-power wireless edge devices - designed specifically to accelerate Matter, Thread, and BLE 5.3 adoption in resource-constrained IoT endpoints with minimal BOM and certification overhead.
FAQ
What wireless protocols does STM32WBA55CGU6 support natively in hardware?
STM32WBA55CGU6 integrates a single 2.4 GHz transceiver supporting Bluetooth LE 5.3 (including 2M, LE Coded, Direction Finding, and Isochronous Channels) and IEEE 802.15.4-2015 PHY/MAC. Hardware packet arbitration enables concurrent or time-sliced operation for Thread, Matter, and Zigbee® without external RF ICs or protocol translation layers.
How does TrustZone implementation differ from standard STM32 MCUs?
This device implements Arm TrustZone with a Global TrustZone Controller (GTZC) that secures memories, peripherals, and I/Os at the hardware level. It includes a Secure Hide Protection Area (HDP), RDP-protected debug, and Root Secure Services (RSS) for Secure Firmware Installation - enabling PSA Certified Level 3 compliance out of the box, unlike earlier STM32 families requiring external secure elements.
What is the minimum power consumption in lowest active-retention mode?
In Stop mode with 64-KB SRAM retained and low-power peripherals enabled (LPTIM, COMP, ADC), STM32WBA55CGU6 consumes 6.5 µA at 3.3 V. This mode retains full register context and allows wake-up via external interrupt, comparator output, or timer event - ideal for periodic sensor sampling in battery-operated devices.
Does STM32WBA55CGU6 require an external balun or matching network?
No. The device integrates a fully matched balun between the RF transceiver and ANT pin, supporting direct connection to a 50 Ω antenna or chip antenna. This eliminates external RF components, reduces PCB area by ≈15 mm², and simplifies ETSI/FCC pre-scan validation - confirmed in Section 3.10 and Table 32 of DS14127 Rev 10.
STM32WBA55CGU6 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:
- 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)
STM32WBA55CGU6 FAQ
1.How can I place an order for STM32WBA55CGU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA55CGU6 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 STM32WBA55CGU6 reliable?
The price and inventory of STM32WBA55CGU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA55CGU6 is usually 5 days.
3.What payment methods are accepted for STM32WBA55CGU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA55CGU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA55CGU6?
STM32WBA55CGU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA55CGU6 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 STM32WBA55CGU6?
For technical support, including STM32WBA55CGU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA55CGU6 requirements.
6.How does Aetrix verify that STM32WBA55CGU6 is sourced from the original manufacturer or authorized distributors?
All STM32WBA55CGU6 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 STM32WBA55CGU6 meets industry standards.
7.What is the process for return or replacement of STM32WBA55CGU6?
All STM32WBA55CGU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA55CGU6, 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 STM32WBA55CGU6 part is unused and in its original packaging.
Return procedure for STM32WBA55CGU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WBA55CGU6 Tags
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ESP32-D0WD-V3
Espressif Systems
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ESP8266EX
Espressif Systems
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ESP32-S3
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NRF24L01P-R7
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NRF24L01P-R
Nordic Semiconductor ASA
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ESP32-U4WDH
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DA14531-00000OG2
Renesas
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ESP32-C6FH4
Espressif Systems
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DA14531-00000FX2
Renesas
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NRF24L01P-T
Nordic Semiconductor ASA
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NRF52810-QCAA-R
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ESP32-S3FN8
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