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STMicroelectronics STM32WBA55UGI6
- Part No.:
- STM32WBA55UGI6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 59-UFBGA
- Datasheet:
-
STM32WBA55UGI6.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 59UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,547
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Product details
Overview
STM32WBA55UGI6 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 requiring certified RF compliance (FCC/ETSI/ARIB).
For engineers reviewing the STM32WBA55UGI6 datasheet, STM32WBA55UGI6 pinout, STM32WBA55UGI6 application, or STM32WBA55UGI6 equivalent, key selection criteria include TrustZone-enabled secure boot, dual-protocol radio coexistence, sub-µA low-power modes with SRAM retention, and WLCSP41 package suitability for space-constrained wearables and sensor tags.
Technical Context
The device integrates a dual-protocol 2.4 GHz transceiver with hardware packet arbitration, enabling concurrent BLE and IEEE 802.15.4 MAC layer operations without CPU intervention. Its FlexPowerControl architecture supports autonomous peripheral operation-including LPTIMs, comparators, and ADC oversampling-down to Stop 1 mode with 64-Kbyte SRAM retention.
TrustZone security is implemented at silicon level with securable I/Os, memory regions (flash/SRAM), and peripherals; root of trust is established via unique boot entry and Secure Hide Protection Area (HDP), while TF-M enables certified secure firmware updates. The ART Accelerator provides zero-wait-state execution from 1 Mbyte ECC flash at up to 100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 100 MHz with TrustZone, MPU, DSP, and single-precision FPU |
| Radio Support | Bluetooth LE 5.3 (2M, Coded, Direction Finding, Isochronous Channels) + IEEE 802.15.4-2015 PHY/MAC for Thread/Matter/Zigbee |
| RX Sensitivity | -96 dBm @ 1 Mbps BLE; -97.5 dBm @ 250 kbps IEEE 802.15.4 - enables robust link budget in noisy 2.4 GHz environments |
| TX Output Power | Programmable from -20 to +10 dBm in 1 dB steps - allows precise RF range/power trade-off tuning |
| Low-Power Modes | 160 nA Standby (16 wake-up pins); 0.9 µA Standby w/ 64-KB SRAM; 6.5 µA Stop w/ 64-KB SRAM |
| Memory | 1 Mbyte flash (ECC, 100k cycles), 128-Kbyte SRAM (64 KB with parity), 512-byte OTP |
| Security | TrustZone, SFI with RSS, RHUK-based secure storage, DPA-resistant AES/PKA/HASH, NIST SP800-90B TRNG |
Pinout & Package
STM32WBA55UGI6 uses a 41-ball WLCSP (2.76 × 2.98 mm, pitch 0.4 mm), optimized for miniaturized IoT endpoints. Pin functions are validated per ST's DS14127 Rev 10, Section 4 ("Pinouts and pin description") and Table 24 ("Device pin definitions").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDRF | Power supply domains | Separate analog (VDDA), RF (VDDRF), and digital (VDD) rails enable noise isolation and independent voltage scaling |
| OSC_IN/OSC_OUT | 32 MHz crystal interface | Supports single-crystal operation for RF timing accuracy and EMI reduction |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external reset supervisors |
| PA0–PA15, PB0–PB15, PC0–PC10 | General-purpose I/Os | Up to 35 GPIOs (most 5 V-tolerant); support multiple alternate functions including UART, SPI, I²C, SAI, and touch sensing |
| ANT | RF antenna interface | Differential RF output with integrated balun - eliminates external matching network for basic PCB antennas |
| VBAT | RTC backup supply | Enables calendar RTC operation during main power loss using coin-cell or supercapacitor |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Balun | Reduces BOM count and PCB area by eliminating discrete RF matching components for chip antenna designs |
| Autonomous Peripherals | LPTIMs, comparators, and ADC oversampling operate independently in Stop mode - enables sensor wake-up without CPU activation |
| Secure Firmware Installation | SFI with embedded Root Secure Services (RSS) ensures authenticated, encrypted firmware loading at first boot |
| Multi-Protocol Radio Arbitration | Hardware packet traffic arbitration prevents BLE/802.15.4 frame collisions - critical for Matter-over-Thread coexistence |
| SMPS + LDO Power Management | On-chip step-down converter and LDO support dynamic voltage scaling and switch-on-the-fly - improves efficiency across operating modes |
Applications
| Smart Wearables | Industrial Sensor Nodes |
|---|---|
Use Scenario: Compact fitness tracker with BLE heart-rate streaming and Matter-compliant local control. IC Role / Device Role / Timing Role: Primary wireless MCU handling dual-role BLE peripheral (HRM service) and Matter endpoint (Thread border router proxy). Use Value: Integrated dual-protocol radio eliminates external transceiver; WLCSP41 footprint enables <12 mm² PCB area; 0.9 µA Standby extends coin-cell life beyond 2 years. | Use Scenario: Battery-powered vibration/temperature node in predictive maintenance system, reporting via Thread to edge gateway. IC Role / Device Role / Timing Role: Autonomous sensor hub executing FFT on ADC data, then transmitting compressed telemetry over IEEE 802.15.4 with guaranteed latency. Use Value: Hardware packet arbitration ensures deterministic Thread messaging under concurrent BLE OTA updates; 6.5 µA Stop mode enables 10-year battery life at 1-min sampling. |
| Smart Home Lighting | Medical Patch Monitors |
Use Scenario: Zigbee- and Matter-certified LED driver module supporting voice-controlled dimming and energy metering. IC Role / Device Role / Timing Role: Dual-stack coordinator managing Zigbee Green Power commissioning and Matter over Thread commissioning simultaneously. Use Value: TrustZone isolates lighting control logic from secure commissioning stack; RHUK-backed secure storage protects device identity keys against physical extraction. | Use Scenario: Disposable ECG patch transmitting real-time biosignals via BLE audio isochronous channels (LE Audio) to smartphone. IC Role / Device Role / Timing Role: Ultra-low-power signal processor with 12-bit ADC (2.5 Msps), hardware oversampling, and LE Audio LC3 codec acceleration. Use Value: 23 µA/MHz Run mode and 4.4 mA Rx current minimize thermal load on skin; integrated balun simplifies flex-PCB antenna integration. |
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 only; no native IEEE 802.15.4 MAC; lacks TrustZone and SMPS; 2.4 GHz RX sensitivity -96 dBm (same) | Requires external stack for Thread/Matter; limited secure boot depth; higher active current (4.9 mA Rx) | Select when BLE-only use case dominates and cost sensitivity outweighs protocol flexibility and security requirements. |
| TI CC2652RB | Integrated BAW resonator eliminates need for external crystal; BLE 5.0 + IEEE 802.15.4; no TrustZone; 1.2 µA Standby (w/ 8 KB RAM) | Better crystal-free RF stability; weaker security model; lower standby current but no 64-KB SRAM retention option | Select for crystalless designs where RF timing margin is critical and security requirements align with TI's SimpleLink™ Trust Anchor. |
Compared with Nordic nRF52840 and TI CC2652RB, STM32WBA55UGI6 uniquely combines certified dual-protocol radio, Arm TrustZone, on-die SMPS, and WLCSP packaging - delivering superior security, power efficiency, and design integration for Matter/Thread/BLE converged endpoints.
Availability
STM32WBA55UGI6 is available at Aetrix Electronics and suitable for smart wearables, industrial sensor nodes, smart home lighting, and medical patch monitors requiring stable component supply, long-term lifecycle assurance, and full regulatory certification support (FCC/ETSI/ARIB).
Supply support for STM32WBA55UGI6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong focus on energy efficiency and security.
The STM32WBA5xxx series is ST's first wireless MCU family built on Cortex-M33 with TrustZone, explicitly designed for secure, low-power Matter/Thread/BLE end devices targeting next-generation smart home, industrial IoT, and medical wearables.
FAQ
What RF certifications does STM32WBA55UGI6 support out-of-the-box?
STM32WBA55UGI6 is pre-certified for FCC CFR47 Part 15, ETSI EN 300 328, EN 300 440, and ARIB STD-T66. These certifications apply to the reference design with integrated balun and standard PCB antenna layout - reducing time-to-market for compliant end products without requiring full RF retesting.
Does STM32WBA55UGI6 support over-the-air (OTA) firmware updates for both BLE and Matter stacks?
Yes. The device supports secure OTA updates via BLE (using ST's BlueNRG Stack) and Matter (via Thread commissioning), both leveraging TrustZone-protected update mechanisms. SFI with embedded RSS and TF-M integration ensure cryptographic integrity, authentication, and rollback protection for all firmware images.
Can the integrated SMPS be used with external inductors smaller than 1 µH?
No. ST specifies a minimum 1.0 µH shielded inductor (e.g., TDK VLS201610HBX-1R0M) for stable SMPS operation across temperature and load. Using smaller inductors risks instability, increased ripple, and failure to meet the 23 µA/MHz Run mode efficiency target per DS14127 Section 5.3.8.
How many simultaneous BLE connections does STM32WBA55UGI6 support in peripheral role?
The device supports up to 8 simultaneous BLE connections in peripheral role when using ST's certified BLE stack. This is enabled by dedicated hardware link-layer resources and 128-Kbyte SRAM allocation for connection context buffers - verified in ST Application Note AN5523 (BLE Multi-Connection Implementation Guide).
STM32WBA55UGI6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 59-UFBGA
- 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:
- 59-UFBGA (5x5)
STM32WBA55UGI6 FAQ
1.How can I place an order for STM32WBA55UGI6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA55UGI6 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 STM32WBA55UGI6 reliable?
The price and inventory of STM32WBA55UGI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA55UGI6 is usually 5 days.
3.What payment methods are accepted for STM32WBA55UGI6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA55UGI6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA55UGI6?
STM32WBA55UGI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA55UGI6 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 STM32WBA55UGI6?
For technical support, including STM32WBA55UGI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA55UGI6 requirements.
6.How does Aetrix verify that STM32WBA55UGI6 is sourced from the original manufacturer or authorized distributors?
All STM32WBA55UGI6 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 STM32WBA55UGI6 meets industry standards.
7.What is the process for return or replacement of STM32WBA55UGI6?
All STM32WBA55UGI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA55UGI6, 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 STM32WBA55UGI6 part is unused and in its original packaging.
Return procedure for STM32WBA55UGI6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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