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STMicroelectronics STM32WBA55UGI7
- Part No.:
- STM32WBA55UGI7
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 59-UFBGA
- Datasheet:
-
STM32WBA55UGI7.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 59UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,136
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Product details
Overview
STM32WBA55UGI7 from STMicroelectronics is a multiprotocol wireless 32-bit Arm® Cortex®-M33 MCU with TrustZone®, FPU, Bluetooth® LE 6.0, and IEEE 802.15.4 radio-featuring -96 dBm RX sensitivity (BLE @ 1 Mbps), +10 dBm programmable TX power, and ultra-low-power operation down to 160 nA in Standby mode. It integrates 1 Mbyte ECC flash, 128-Kbyte SRAM (64 KB with parity), and supports Thread/Matter/Zigbee® on a single chip for secure IoT edge nodes.
For engineers reviewing the STM32WBA55UGI7 datasheet, STM32WBA55UGI7 pinout, STM32WBA55UGI7 application, or STM32WBA55UGI7 equivalent, key selection criteria include BLE/802.15.4 coexistence capability, TrustZone-enabled secure firmware upgrade (TF-M), FlexPowerControl sub-µA low-power modes, and WLCSP41 package suitability for space-constrained wearables and sensor tags.
Technical Context
The device implements a dual-protocol 2.4 GHz RF transceiver supporting concurrent BLE and IEEE 802.15.4 PHY/MAC layers, with integrated balun and single-crystal timing. Its Arm Cortex-M33 core runs at up to 100 MHz with ART Accelerator enabling zero-wait-state flash execution and 410 CoreMark® performance.
Security is architected via hardware-enforced TrustZone®, securable peripherals, Root of Trust (HDP, unique boot entry), and cryptographic accelerators including two AES engines (one DPA-resistant), PKA, HASH, and NIST SP800-90B-compliant TRNG-enabling certified secure firmware installation (SFI) and over-the-air updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 100 MHz with TrustZone®, FPU, MPU, DSP |
| Wireless Protocols | Bluetooth LE 6.0 (including LE Audio, Direction Finding, Isochronous Channels) and IEEE 802.15.4-2015 (Thread, Matter, Zigbee®) |
| RF Performance | RX sensitivity: -96 dBm (BLE @ 1 Mbps); TX output: +10 dBm programmable in 1 dB steps |
| Memory | 1 Mbyte flash (ECC, 256 KB rated for 100k cycles); 128-Kbyte SRAM (64 KB with parity) |
| Low-Power Modes | 160 nA Standby (16 wake-up pins); 6.5 µA Stop mode with 64-Kbyte SRAM retained |
| Security Features | TrustZone®, secure boot, SFI with RSS, RHUK, AES/PKA/HASH accelerators, active tampers, 96-bit UID |
| Package | WLCSP41 (2.76 × 2.98 mm), 0.4 mm pitch, ECOPACK2 compliant |
Pinout & Package
STM32WBA55UGI7 is housed in a 41-ball WLCSP (Wafer-Level Chip-Scale Package) with 0.4 mm ball pitch, optimized for minimal PCB footprint in compact IoT endpoints. The package supports single-crystal operation and integrates RF matching components to reduce external BOM count.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_RF | RF Power Supply | Dedicated 1.2 V supply for RF transceiver; decoupling critical for ETSI/FCC compliance |
| ANT | RF Antenna Interface | Differential RF output with integrated balun; connects directly to chip antenna or matching network |
| OSC_IN / OSC_OUT | 32 MHz Crystal Interface | Single-ended crystal connection for system clock; enables precise timing for BLE/802.15.4 symbol accuracy |
| VDDA | Analog Power Supply | Independent 1.71–3.6 V supply for ADC, comparators, and TSC-reduces noise coupling into RF/analog paths |
| BOOT0 | Boot Mode Selection | Pulled high during reset to enable system memory bootloader; used for field firmware recovery |
| NRST | Reset Input | Active-low asynchronous reset with internal pull-up; supports external reset button or supervisor IC |
| 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 |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl Architecture | Enables autonomous peripheral operation (e.g., timers, ADC, LPUART) in Stop mode without CPU wake-up-critical for battery lifetime in sensor polling applications |
| Integrated Balun & Single-Crystal RF | Eliminates external RF matching components and second crystal, reducing BOM cost and PCB area by >30% vs discrete RF solutions |
| TrustZone + Secure Firmware Installation (SFI) | Hardware-rooted secure boot and authenticated firmware update using embedded RSS-meets PSA Level 3 and Matter certification requirements |
| Ultra-Low-Power Radio | 4.4 mA RX / 5.2 mA TX @ 0 dBm enables >10-year coin-cell operation in periodic BLE beaconing or Thread sleepy-end-device use cases |
| ART Accelerator with 8-KB Cache | Delivers 0-wait-state execution at 100 MHz from flash, eliminating need for external RAM or cache controller in resource-constrained designs |
Applications
| Smart Wearables | Industrial Sensor Nodes |
|---|---|
Use Scenario: Compact wrist-worn health monitor transmitting heart rate, SpO₂, and motion data via BLE to smartphone or gateway. IC Role / Device Role / Timing Role: Primary wireless SoC handling sensor fusion, BLE protocol stack, secure OTA updates, and real-time power management. Use Value: WLCSP41 footprint enables <100 mm² total PCB area; 160 nA Standby extends CR2032 battery life beyond 2 years with daily sync. | Use Scenario: Battery-powered vibration/temperature node in predictive maintenance system, reporting via Thread to border router. IC Role / Device Role / Timing Role: Dual-role endpoint executing Matter-over-Thread stack, local anomaly detection, and secure commissioning. Use Value: Integrated IEEE 802.15.4 MAC/PHY eliminates external transceiver; TrustZone isolates Matter stack from vendor firmware. |
| Smart Home Lighting Controls | Medical Asset Trackers |
Use Scenario: Dimmable LED driver with Matter-compliant control interface, powered by energy harvesting or small Li-ion cell. IC Role / Device Role / Timing Role: Wireless controller managing PWM dimming, BLE provisioning, and Thread-based group control with isochronous lighting sync. Use Value: Isochronous channel support ensures sub-10 ms timing jitter across multi-lamp networks-critical for flicker-free dimming. | Use Scenario: Discrete medical equipment tracker logging location (BLE AoA), temperature, and tamper status for HIPAA-compliant inventory systems. IC Role / Device Role / Timing Role: Secure edge node performing encrypted sensor readout, BLE direction-finding, and tamper-triggered alert transmission. Use Value: Active tampers + RHUK-backed encryption prevent unauthorized firmware access; -97.5 dBm 802.15.4 sensitivity ensures reliable indoor mesh relay. |
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/PHY; BLE-only radio; 1 MB flash but no TrustZone or SMPS | Lacks native Thread/Matter support; requires external 802.15.4 stack porting; lower security assurance level | Select when BLE-only functionality suffices and legacy SDK familiarity outweighs Matter readiness |
| Silicon Labs EFR32MG24 | ARM Cortex-M33 @ 78 MHz; supports BLE/Thread/Zigbee; no TrustZone; uses proprietary Secure Boot and PSA-certified SE | Requires external secure element for Matter root-of-trust; larger QFN48 package increases board area | Select for high-volume production where EFR32 toolchain maturity and RF range margin (>100 m) are prioritized over MCU-level TrustZone integration |
Compared with Nordic nRF52840 and Silicon Labs EFR32MG24, STM32WBA55UGI7 uniquely combines TrustZone-native secure boot, integrated SMPS for 1.71–3.6 V operation, and single-die BLE/802.15.4 convergence-reducing bill-of-materials while meeting Matter 1.3 and PSA Level 3 certification out-of-box.
Availability
STM32WBA55UGI7 is available at Aetrix Electronics and suitable for smart wearables, industrial sensor nodes, smart home lighting controls, and medical asset trackers requiring stable component supply across long-life IoT deployments.
Supply support for STM32WBA55UGI7 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, analog ICs, MEMS, and power devices for industrial, automotive, and consumer markets.
The STM32WBA series targets secure, ultra-low-power wireless edge nodes-specifically engineered to accelerate Matter and Thread adoption with integrated protocol stacks, hardware security, and RF-optimized packaging.
FAQ
What wireless protocols does STM32WBA55UGI7 support natively in hardware?
STM32WBA55UGI7 integrates a dual-mode 2.4 GHz RF transceiver with hardware-accelerated Bluetooth LE 6.0 (including LE Audio, Direction Finding, and Isochronous Channels) and IEEE 802.15.4-2015 PHY/MAC layers. This enables native Thread, Matter, and Zigbee® operation without external radio ICs or software protocol translation layers.
Does STM32WBA55UGI7 support secure firmware updates over-the-air (OTA)?
Yes. STM32WBA55UGI7 implements Secure Firmware Installation (SFI) using embedded Root Secure Services (RSS), TrustZone isolation, and hardware-accelerated AES/PKA/HASH. It supports TF-M-based OTA updates with signature verification, rollback protection, and encrypted payload handling-certified for Matter 1.3 and PSA Level 3.
What is the minimum power consumption in lowest active sleep mode with SRAM retention?
In Stop mode with 64-Kbyte SRAM retained and low-power peripherals enabled (e.g., LPTIM, RTC, LPUART), STM32WBA55UGI7 consumes 6.5 µA at 3.3 V. This mode maintains full register context and allows wake-up via GPIO, timer, or radio events-ideal for sensor polling intervals of 1–10 seconds.
Is the WLCSP41 package of STM32WBA55UGI7 compatible with standard reflow processes?
Yes. The WLCSP41 (B0MD variant) is qualified for JEDEC J-STD-020 moisture sensitivity level 3 and supports standard lead-free reflow profiles (peak 260°C). Its 0.4 mm ball pitch requires Class II PCB fabrication but is compatible with automated optical inspection (AOI) and X-ray void analysis for production traceability.
STM32WBA55UGI7 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)
STM32WBA55UGI7 FAQ
1.How can I place an order for STM32WBA55UGI7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA55UGI7 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 STM32WBA55UGI7 reliable?
The price and inventory of STM32WBA55UGI7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA55UGI7 is usually 5 days.
3.What payment methods are accepted for STM32WBA55UGI7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA55UGI7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA55UGI7?
STM32WBA55UGI7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA55UGI7 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 STM32WBA55UGI7?
For technical support, including STM32WBA55UGI7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA55UGI7 requirements.
6.How does Aetrix verify that STM32WBA55UGI7 is sourced from the original manufacturer or authorized distributors?
All STM32WBA55UGI7 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 STM32WBA55UGI7 meets industry standards.
7.What is the process for return or replacement of STM32WBA55UGI7?
All STM32WBA55UGI7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA55UGI7, 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 STM32WBA55UGI7 part is unused and in its original packaging.
Return procedure for STM32WBA55UGI7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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