My Inquiry
My Account
STMicroelectronics STM32WBA54KGU6
- Part No.:
- STM32WBA54KGU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- -
- Datasheet:
-
STM32WBA54KGU6.pdf
- Description:
- UFQFPN 5X5X0.55 32L 0.5 MM PITCH
- Quantity:
- Payment:
- Shipping:
Inventory:185
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32WBA54KGU6 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. It integrates 1 Mbyte flash (ECC), 128-Kbyte SRAM (64 KB with parity), and ultra-low-power RF transceiver with -96 dBm RX sensitivity (BLE 1 Mbps) and +10 dBm programmable TX output. Designed for secure, battery-powered IoT edge nodes requiring Matter/Thread/Zigbee® coexistence and Auracast™ support.
For engineers reviewing the STM32WBA54KGU6 datasheet, STM32WBA54KGU6 pinout, STM32WBA54KGU6 application, or STM32WBA54KGU6 equivalent, key selection criteria include BLE/802.15.4 dual-stack capability, TrustZone-enabled secure boot and firmware upgrade, FlexPowerControl sub-µA low-power modes, integrated balun, and WLCSP41 package suitability for space-constrained sensor hubs and wearables.
Technical Context
This MCU implements a dual-protocol 2.4 GHz RF transceiver supporting concurrent Bluetooth LE 6.0 (including LE Audio, Direction Finding, Isochronous Channels) and IEEE 802.15.4-2015 (PHY/MAC) for Thread and Matter. The Arm Cortex-M33 core runs at up to 100 MHz with TrustZone isolation, MPU, DSP, and FPU, backed by 8-Kbyte ART Accelerator for zero-wait-state flash execution.
Power architecture combines LDO and SMPS step-down converter with on-the-fly voltage scaling; real-time power management enables 160 nA Standby mode (16 wake-up pins) and 6.5 µA Stop mode with full 64-Kbyte SRAM retention. Security includes root-of-trust boot, secure firmware installation (SFI), two DPA-resistant AES co-processors, PKA, HASH, NIST SP800-90B TRNG, and 96-bit unique ID.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 @ 100 MHz with TrustZone®, MPU, DSP, and FPU - enables secure, deterministic real-time control with hardware-enforced isolation between secure/non-secure firmware. |
| Wireless Protocols | Bluetooth LE 6.0 + IEEE 802.15.4 PHY/MAC - supports Matter over Thread, Zigbee®, and LE Audio simultaneously without external protocol stack offload. |
| RF Performance | RX sensitivity: -96 dBm (BLE 1 Mbps); TX output: +10 dBm programmable in 1 dB steps - meets ETSI EN 300 328, FCC Part 15, and ARIB STD-T66 regulatory requirements with single-crystal operation. |
| Memory | 1 Mbyte flash (ECC, 256 KB rated for 100k cycles); 128-Kbyte SRAM (64 KB with parity) - ensures data integrity and long-term reliability in field-deployed devices. |
| Low-Power Modes | 160 nA Standby (16 wake-up pins); 6.5 µA Stop (64-Kbyte SRAM retained); 23 µA/MHz Run - extends battery life in coin-cell-powered sensors and wearables beyond 5 years. |
| Security Features | TrustZone, SFI with embedded RSS, RHUK-based secure storage, DPA-resistant AES/PKA/HASH, NIST SP800-90B TRNG - provides certified hardware root of trust for PSA Level 3 and SESIP certification paths. |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (16-bit oversampling); two ultra-low-power comparators - enables high-precision sensor fusion without external signal conditioning. |
| Package | WLCSP41 (2.76 × 2.98 mm, 0.4 mm pitch) - supports miniaturized PCB layouts for earbuds, medical patches, and smart tags. |
Pinout & Package
STM32WBA54KGU6 is housed in a 41-ball WLCSP (Wafer-Level Chip Scale Package) measuring 2.76 × 2.98 mm with 0.4 mm ball pitch, optimized for ultra-compact IoT endpoints. The package integrates RF matching components and supports single-crystal 32 MHz operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_RF / VDD_PA | RF power supply | Dedicated 1.8 V supply for RF transceiver and optional external PA interface - isolates noise-sensitive analog RF section from digital domain. |
| ANT | RF antenna interface | Differential RF output with integrated balun - eliminates discrete balun and matching network, reducing BOM and layout area by >30%. |
| OSC_IN / OSC_OUT | 32 MHz crystal oscillator terminals | Supports single-ended crystal connection for system clock generation - simplifies timing design and reduces component count vs. differential crystal solutions. |
| VDDA / VSSA | Analog power/ground | Independent analog supply domain for ADC, comparators, and RF - prevents digital switching noise from degrading analog measurement accuracy. |
| BOOT0 | Boot mode selection | Configures boot source (system memory, flash, or SRAM) at reset - enables field firmware recovery and secure bootloader activation. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable initialization under brown-out or ESD events per IEC 61000-4-2 Level 4. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD1 | General-purpose I/Os | Up to 35 GPIOs (most 5 V-tolerant) with interrupt capability - supports direct interfacing to legacy sensors, displays, and actuators without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Balun | Eliminates external RF matching components, reducing RF BOM cost by $0.15–$0.25 and PCB area by 2.5 mm² in WLCSP designs. |
| FlexPowerControl Architecture | Enables autonomous peripheral operation (e.g., ADC sampling, timer triggers) down to Stop 1 mode - removes need for CPU wake-up during sensor polling cycles. |
| Secure Firmware Installation (SFI) | Leverages embedded Root Secure Services (RSS) to validate and install signed firmware images without host intervention - critical for unattended OTA updates in remote deployments. |
| LE Audio & Auracast Support | Hardware-accelerated isochronous channel handling enables synchronized multi-stream audio broadcast to unlimited receivers - foundational for public address and assistive listening systems. |
| PTA (Packet Traffic Arbitration) | Hardware coexistence engine dynamically prioritizes BLE and 802.15.4 packet transmission - prevents protocol collisions in dual-stack applications like Matter border routers. |
| SMPS + LDO Dual Regulator | Switch-mode power supply achieves >85% efficiency at 10 mA load; LDO provides ultra-low-noise supply for RF/analog - extends battery life while maintaining RF spectral purity. |
Applications
| Smart Home Sensor Hub | Medical Wearable Patch |
|---|---|
Use Scenario: Compact hub aggregating temperature, humidity, motion, and door/window status from multiple Zigbee®/Thread end devices. IC Role / Device Role / Timing Role: Dual-protocol wireless SoC executing Matter controller stack, managing secure device commissioning, and synchronizing time-critical sensor reports via BLE isochronous channels. Use Value: Single-chip solution eliminates separate MCU + radio IC, reducing bill-of-materials by 2 ICs and enabling sub-10 cm² PCB footprint with WLCSP41 integration. | Use Scenario: Disposable ECG/temperature patch transmitting clinical-grade biometric data to smartphone or gateway. IC Role / Device Role / Timing Role: Ultra-low-power wireless MCU performing continuous ADC sampling, on-device signal filtering, encrypted BLE LE Audio streaming, and secure firmware update verification. Use Value: 160 nA Standby current and 6.5 µA Stop mode with full SRAM retention enable >3-year shelf life and >12-month operational life on CR2032 battery. |
| Industrial Predictive Maintenance Node | Audio Beacon for Accessibility |
Use Scenario: Vibration and temperature monitoring node deployed on rotating machinery in factory settings. IC Role / Device Role / Timing Role: Edge AI inference accelerator (via Cortex-M33 + DSP) preprocessing sensor data, then transmitting anomaly alerts via BLE mesh or Thread to cloud gateway. Use Value: TrustZone-secured SRAM and flash protect proprietary ML models and calibration data from physical tampering or firmware extraction attacks. | Use Scenario: Public-space audio beacon broadcasting multilingual announcements or navigation cues to hearing aids via Auracast™. IC Role / Device Role / Timing Role: Real-time isochronous channel transmitter with hardware timestamping and low-latency packet arbitration (PTA) for synchronized multi-receiver playback. Use Value: Integrated PTA and dual-protocol radio ensure zero-audio-drop interoperability between BLE LE Audio transmitters and diverse receiver brands in dense RF environments. |
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 | ARM Cortex-M4F @ 64 MHz; no IEEE 802.15.4 MAC hardware acceleration; lacks integrated SMPS and TrustZone. | Requires external DC/DC for optimal efficiency; software-only Thread stack increases CPU load and latency. | Select when BLE-only functionality suffices and legacy SDK ecosystem is prioritized over Matter/Thread hardware acceleration. |
| Silicon Labs EFR32MG24 | ARM Cortex-M33 @ 78 MHz; supports Zigbee/Thread/Matter but no native BLE LE Audio or Auracast™; no TrustZone memory isolation. | Lacks hardware isochronous channel support; secure boot relies on proprietary Secure Vault instead of PSA-certified TrustZone. | Select for high-volume Zigbee/Thread lighting controls where BLE audio features are unnecessary and cost-per-unit is primary driver. |
Compared with Nordic nRF52840 and Silicon Labs EFR32MG24, STM32WBA54KGU6 uniquely delivers hardware-accelerated BLE LE Audio + IEEE 802.15.4 coexistence, TrustZone-certified security, and sub-µA power states in a WLCSP package - making it the only choice for compact, secure, multi-standard IoT endpoints requiring Matter certification and Auracast™ compliance.
Availability
STM32WBA54KGU6 is available at Aetrix Electronics and suitable for smart home sensor hubs, medical wearable patches, industrial predictive maintenance nodes, and audio beacons requiring stable component supply across multi-year production cycles.
Supply support for STM32WBA54KGU6 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 automotive semiconductors with vertical fabrication capacity.
The STM32WBA series targets secure, ultra-low-power wireless edge nodes for Matter, Thread, and BLE LE Audio ecosystems - delivering certified hardware foundations for next-generation interoperable IoT devices.
FAQ
What wireless protocols does STM32WBA54KGU6 support natively in hardware?
STM32WBA54KGU6 integrates a single 2.4 GHz RF transceiver with hardware-accelerated support for Bluetooth LE 6.0 (including LE Audio, Direction Finding, and Isochronous Channels) and IEEE 802.15.4-2015 PHY/MAC. This enables concurrent Matter-over-Thread, Zigbee®, and BLE operation without external protocol co-processors or software-only stack overhead.
Does STM32WBA54KGU6 require an external balun or RF matching network?
No. STM32WBA54KGU6 includes an integrated passive balun within the die, allowing direct connection of a 50 Ω antenna or chip antenna via the ANT pin pair. This eliminates discrete balun components, reduces RF BOM cost, and simplifies PCB layout - verified in ST's AN5922 reference design and certified per FCC/CE test reports.
How is secure firmware update implemented on STM32WBA54KGU6?
Secure firmware updates use Secure Firmware Installation (SFI) powered by embedded Root Secure Services (RSS). Signed firmware images are validated using the hardware public key accelerator (PKA) and AES-256 decryption before writing to flash. The process enforces signature verification, image integrity (SHA-256), and rollback protection - all enforced within the TrustZone secure world without CPU intervention.
What is the minimum power supply voltage and operating temperature range for industrial use?
STM32WBA54KGU6 operates from 1.71 V to 3.6 V and is qualified for -40 °C to +105 °C ambient temperature. Its SMPS regulator maintains regulation down to 1.71 V input, and the integrated temperature sensor (±2 °C accuracy) enables thermal derating in enclosed enclosures - meeting IEC 60730 Class B requirements for industrial control applications.
STM32WBA54KGU6 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:
- -
- GPIO:
- -
- Voltage - Supply:
- -
- Current - Receiving:
- -
- Current - Transmitting:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
STM32WBA54KGU6 FAQ
1.How can I place an order for STM32WBA54KGU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WBA54KGU6 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 STM32WBA54KGU6 reliable?
The price and inventory of STM32WBA54KGU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WBA54KGU6 is usually 5 days.
3.What payment methods are accepted for STM32WBA54KGU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WBA54KGU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WBA54KGU6?
STM32WBA54KGU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WBA54KGU6 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 STM32WBA54KGU6?
For technical support, including STM32WBA54KGU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WBA54KGU6 requirements.
6.How does Aetrix verify that STM32WBA54KGU6 is sourced from the original manufacturer or authorized distributors?
All STM32WBA54KGU6 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 STM32WBA54KGU6 meets industry standards.
7.What is the process for return or replacement of STM32WBA54KGU6?
All STM32WBA54KGU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WBA54KGU6, 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 STM32WBA54KGU6 part is unused and in its original packaging.
Return procedure for STM32WBA54KGU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WBA54KGU6 Tags
-
ESP32-D0WD-V3
Espressif Systems
-
ESP8266EX
Espressif Systems
-
ESP32-S3
Espressif Systems
-
NRF24L01P-R7
Nordic Semiconductor ASA
-
NRF24L01P-R
Nordic Semiconductor ASA
-
ESP32-U4WDH
Espressif Systems
-
DA14531-00000OG2
Renesas
-
ESP32-C6FH4
Espressif Systems
-
DA14531-00000FX2
Renesas
-
NRF24L01P-T
Nordic Semiconductor ASA
-
NRF52810-QCAA-R
Nordic Semiconductor ASA
-
ESP32-S3FN8
Espressif Systems
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
