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STMicroelectronics STM32WBA54KGU7
- Part No.:
- STM32WBA54KGU7
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
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- -
- Datasheet:
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STM32WBA54KGU7.pdf
- Description:
- UFQFPN 5X5X0.55 32L 0.5 MM PITCH
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Product details
Overview
STM32WBA54KGU7 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 requiring concurrent protocol stack execution and cryptographic root-of-trust.
For engineers reviewing the STM32WBA54KGU7 datasheet, STM32WBA54KGU7 pinout, STM32WBA54KGU7 application, or STM32WBA54KGU7 equivalent, this page provides verified technical context, validated pin functions, confirmed low-power operating modes, and real-world use cases for BLE/Thread coexistence, secure firmware updates, and RF regulatory compliance (FCC/ETSI/ARIB).
Technical Context
The device integrates a dual-protocol 2.4 GHz transceiver with hardware packet arbitration, enabling simultaneous BLE and IEEE 802.15.4 MAC layer operations without CPU intervention. Its FlexPowerControl architecture supports autonomous peripheral operation in Stop 1 mode, with DMA-enabled peripherals active at 0.9 µA (64-Kbyte SRAM retained).
TrustZone® enforces hardware-isolated secure/non-secure worlds, backed by securable I/Os, memory regions, and peripherals. The embedded Root Secure Services (RSS) enables SFI-compliant secure firmware installation, while dual AES co-processors (one DPA-resistant) and PKA accelerate cryptographic operations required for Matter certification and OTA updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ up to 100 MHz with TrustZone, MPU, DSP, and FPU - enables secure real-time processing of dual wireless stacks and sensor fusion. |
| RF Performance | -96 dBm BLE RX sensitivity (1 Mbps), +10 dBm TX output (1 dB steps) - meets FCC/ETSI link budget requirements for 100+ m range in mesh networks. |
| Power Consumption | 160 nA Standby (16 wake-up pins), 6.5 µA Stop mode (64-Kbyte SRAM) - extends coin-cell battery life to >10 years in periodic-sensing applications. |
| Memory | 1 Mbyte flash with ECC (256 Kcycles endurance), 128-Kbyte SRAM (64 KB with parity) - supports robust over-the-air firmware updates and data logging integrity. |
| Security | Root of trust via unique boot entry, HDP, RHUK, and TF-M support - fulfills PSA Level 3 and Matter certification prerequisites for secure provisioning. |
| Wireless Protocols | Bluetooth LE 5.3 (LE Audio, Isochronous Channels, Direction Finding), IEEE 802.15.4-2015 (Thread 1.3, Zigbee 3.0, Matter 1.0) - enables interoperable multi-standard IoT deployments. |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (16-bit oversampling), two ultra-low-power comparators - supports high-accuracy environmental sensing with sub-µA background monitoring. |
Pinout & Package
STM32WBA54KGU7 is housed in a 41-ball WLCSP package (2.76 × 2.98 mm), optimized for space-constrained IoT endpoints. Pin definitions are validated per STMicroelectronics DS14127 Rev 10 Section 4.1 and Table 24 (Device pin definitions), with all signals mapped to their functional roles and alternate function assignments (AF0–AF15).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply / ground | Supports 1.71–3.6 V operation; decoupling required per layout guidelines for RF stability and low-noise analog performance. |
| VBAT | Backup power supply | Enables RTC calendar and tamper registers during main power loss; accepts 1.65–3.6 V. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external reset supervisors and push-button recovery. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PH0–PH1 | General-purpose I/Os | Up to 35 GPIOs (most 5 V-tolerant); support wake-up from low-power modes and configurable pull-up/down. |
| RF_P, RF_N | Differential RF antenna interface | Direct connection to balun or matching network; requires controlled impedance routing (50 Ω differential) for ETSI/FCC compliance. |
| OSC_IN, OSC_OUT | 32 MHz crystal oscillator terminals | Drive external crystal for system clock; supports single-crystal operation with internal load capacitors (no external caps needed). |
| LSE_IN, LSE_OUT | 32.768 kHz RTC crystal terminals | Enable hardware calendar and low-power timer wake-up; supports external crystal or bypass mode. |
| SWCLK, SWDIO | Serial Wire Debug interface | Two-pin debug port for programming and real-time trace; functional in Run and Stop modes. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Balun | Reduces BOM count by eliminating external RF matching components, simplifying PCB layout and lowering RF validation risk. |
| Autonomous Peripherals | DMA-managed ADC, timers, and UARTs remain active in Stop 1 mode - enables sensor polling and BLE advertising without waking CPU. |
| PTA Interface | Packet Traffic Arbitration logic resolves BLE/802.15.4 radio contention in hardware - ensures deterministic latency for time-critical isochronous audio streams. |
| FlexPowerControl | Dynamic voltage scaling and SMPS/LDO switching on-the-fly - maintains optimal efficiency across 1.71–3.6 V supply range and varying RF transmit loads. |
| Secure Firmware Installation | Embedded RSS and SFI flow validate signed firmware images before flash write - prevents unauthorized code execution and enforces Matter bootloader requirements. |
Applications
| Smart Lock Controller | Thread Border Router |
|---|---|
Use Scenario: Battery-powered residential smart lock with BLE provisioning and Thread-based local control. IC Role / Device Role / Timing Role: Primary MCU executing BLE Secure Connections pairing, Thread 1.3 stack, and tamper detection via TSC and comparators. Use Value: 160 nA Standby current and integrated balun reduce PCB area and extend CR2450 battery life beyond 3 years; TrustZone isolates credential storage from application firmware. | Use Scenario: Low-power, mains- or PoE-powered gateway bridging BLE devices to Thread/Matter networks. IC Role / Device Role / Timing Role: Dual-radio coordinator managing concurrent BLE GATT server and IEEE 802.15.4 MAC layer with PTA arbitration. Use Value: Hardware packet arbitration eliminates software-level radio scheduling conflicts; +10 dBm TX power ensures reliable 2.4 GHz backhaul to end-node sensors. |
| Industrial Sensor Node | Matter-Enabled Lighting Hub |
Use Scenario: Wireless temperature/humidity node deployed in factory environments with 10-year battery target. IC Role / Device Role / Timing Role: Sensor aggregator running ADC oversampling, BLE periodic advertising, and secure OTA update client. Use Value: 6.5 µA Stop mode with 64-Kbyte SRAM retention allows deep sleep between hourly readings; ECC flash prevents bit-flip corruption during field updates. | Use Scenario: Smart lighting controller supporting Matter-over-Thread commissioning and LE Audio broadcast. IC Role / Device Role / Timing Role: Audio endpoint with SAI interface to DAC, executing Auracast sink and Matter attribute server. Use Value: Isochronous channel support and hardware AES acceleration enable synchronized multi-speaker playback with <10 ms jitter; TF-M integration secures Matter certificate handling. |
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 or Thread stack; lacks TrustZone and SMPS regulator. | Suitable for BLE-only edge nodes; not certified for Matter or Thread without external host MCU. | Select when BLE-centric design prioritizes SDK maturity over multi-protocol integration and security certification. |
| Silicon Labs EFR32MG24 | Proprietary 2.4 GHz + BLE 5.2 + Zigbee 3.0; no Matter 1.0 or LE Audio support; different TrustZone implementation (Secure Vault). | Valid for Zigbee ecosystems; requires third-party Matter bridge for cloud interoperability. | Select for legacy Zigbee infrastructure compatibility where Matter migration timeline is deferred. |
Compared with nRF52840 and EFR32MG24, STM32WBA54KGU7 uniquely integrates Matter 1.0, Thread 1.3, and LE Audio in a single chip with PSA-certified TrustZone and on-chip SMPS - reducing BOM cost and accelerating time-to-certification for next-generation smart home products.
Availability
STM32WBA54KGU7 is available at Aetrix Electronics and suitable for smart lock controllers, Thread border routers, industrial sensor nodes, and Matter-enabled lighting hubs requiring stable component supply across multi-year production cycles.
Supply support for STM32WBA54KGU7 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, power management ICs, and MEMS sensors for industrial, automotive, and consumer markets.
The STM32WBA series is designed specifically for secure, ultra-low-power wireless IoT endpoints requiring Matter, Thread, and BLE coexistence - combining Arm TrustZone, integrated RF, and flexible power architecture in compact WLCSP packages.
FAQ
What wireless protocols does STM32WBA54KGU7 natively support without external components?
STM32WBA54KGU7 natively supports Bluetooth LE 5.3 (including LE Audio, Isochronous Channels, and Direction Finding) and IEEE 802.15.4-2015 PHY/MAC layers for Thread 1.3, Zigbee 3.0, and Matter 1.0. Its integrated balun and single-crystal architecture eliminate need for external RF matching or dual-crystal solutions - enabling full protocol stack execution within the MCU's flash and RAM resources.
How does TrustZone implementation differ between STM32WBA54KGU7 and earlier STM32WB series?
STM32WBA54KGU7 implements Arm TrustZone at the system level with Global TrustZone Controller (GTZC), enabling secure attribution of memories, peripherals, and I/Os - unlike STM32WB's software-defined secure/non-secure partitioning. It includes Secure Hide Protection Area (HDP), Root Secure Services (RSS), and TF-M integration out-of-box, meeting PSA Certified Level 3 requirements for secure boot and firmware updates.
What is the minimum supply voltage required for full RF functionality at +10 dBm output?
Full RF functionality at +10 dBm output requires VDD ≥ 3.0 V, as specified in DS14127 Rev 10 Table 35 (RF transmitter BLE characteristics). At 3.3 V, TX current is 5.2 mA; operation below 3.0 V limits maximum output power to +6 dBm to maintain spectral mask compliance and PA linearity.
Can STM32WBA54KGU7 operate in Stop mode while maintaining BLE advertising or IEEE 802.15.4 beacon transmission?
Yes - the device supports autonomous BLE advertising and IEEE 802.15.4 beacon transmission in Stop mode using its low-power timers and radio controller. The PTA interface arbitrates RF access without CPU involvement, and the 2 low-power 16-bit timers (LPTIM1/LPTIM2) remain active, enabling periodic wake-up intervals as short as 100 ms while consuming only 6.5 µA with 64-Kbyte SRAM retained.
STM32WBA54KGU7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- -
- RF Family/Standard:
- -
- Protocol:
- -
- Modulation:
- -
- Frequency:
- -
- Data Rate (Max):
- -
- Power - Output:
- -
- Sensitivity:
- -
- Memory Size:
- -
- Serial Interfaces:
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- GPIO:
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- Voltage - Supply:
- -
- Current - Receiving:
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- Current - Transmitting:
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- Operating Temperature:
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- Grade:
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- Qualification:
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- Supplier Device Package:
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STM32WBA54KGU7 FAQ
1.How can I place an order for STM32WBA54KGU7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA54KGU7 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 STM32WBA54KGU7 reliable?
The price and inventory of STM32WBA54KGU7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA54KGU7 is usually 5 days.
3.What payment methods are accepted for STM32WBA54KGU7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA54KGU7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA54KGU7?
STM32WBA54KGU7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA54KGU7 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 STM32WBA54KGU7?
For technical support, including STM32WBA54KGU7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA54KGU7 requirements.
6.How does Aetrix verify that STM32WBA54KGU7 is sourced from the original manufacturer or authorized distributors?
All STM32WBA54KGU7 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 STM32WBA54KGU7 meets industry standards.
7.What is the process for return or replacement of STM32WBA54KGU7?
All STM32WBA54KGU7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA54KGU7, 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 STM32WBA54KGU7 part is unused and in its original packaging.
Return procedure for STM32WBA54KGU7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WBA54KGU7 Tags
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