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STMicroelectronics STM32WB15CCU6
- Part No.:
- STM32WB15CCU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WB15CCU6.pdf
- Description:
- IC RF TXRX+MCU BLE 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:306
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Product details
Overview
STM32WB15CCU6 from STMicroelectronics is a dual-core multiprotocol wireless 32-bit MCU integrating an Arm® Cortex®-M4 with FPU (64 MHz) and a dedicated Cortex®-M0+ for Bluetooth® 5.4 radio processing. It delivers -95.5 dBm RX sensitivity, +5.5 dBm programmable TX power, 320 KB flash, 48 KB SRAM, and ultra-low-power operation down to 12 nA in shutdown mode. It targets compact, battery-powered IoT edge nodes requiring certified BLE 5.4 connectivity and secure over-the-air updates.
For engineers reviewing the STM32WB15CCU6 datasheet, STM32WB15CCU6 pinout, STM32WB15CCU6 application, or STM32WB15CCU6 equivalent, key selection criteria include dual-CPU real-time radio coexistence, integrated SMPS efficiency, RF regulatory compliance (FCC/ETSI), and hardware crypto acceleration (AES-256, PKA, RNG).
Technical Context
The device implements a tightly coupled dual-CPU architecture: the Cortex-M4 handles application logic and high-speed peripherals (ADC, timers, crypto), while the Cortex-M0+ exclusively manages Bluetooth Low Energy protocol stack execution and real-time RF timing. Inter-processor communication occurs via IPCC and hardware semaphores, eliminating software arbitration overhead.
RF subsystem includes a fully integrated 2.4 GHz transceiver with on-die balun, programmable output power in 1 dB steps, support for 1 Mbps and 2 Mbps PHY modes, EATT, GATT caching, and RSSI-based adaptive power control - all compliant with FCC Part 15, ETSI EN 300 328, and ARIB STD-T66.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | Dual-core: Arm Cortex-M4 @ 64 MHz (FPU, ART Accelerator) + Cortex-M0+ @ 32 MHz for BLE stack |
| Wireless Standard | Bluetooth 5.4 compliant, supporting LE 1M/2M PHY, EATT, GATT caching, and secure pairing |
| RF Performance | RX sensitivity: -95.5 dBm @ 1 Mbps; TX output: up to +5.5 dBm in 1 dB steps; integrated balun reduces external BOM |
| Memory | 320 KB flash with PCROP sector protection; 48 KB SRAM (36 KB with parity); 1 KB OTP; IEEE 64-bit & 96-bit unique IDs |
| Power Efficiency | 12 nA shutdown; 610 nA standby + RTC + 48 KB RAM; 33 µA/MHz active (RF + SMPS on); 4.5 mA RX / 5.2 mA TX @ 0 dBm |
| Security | Hardware AES-256, PKA (RSA/ECC/DH), TRNG, CRC unit, Secure Firmware Installation (SFI) for BLE stack |
| Analog Peripherals | 12-bit ADC @ 2.5 Msps (190 µA/Msps), ultra-low-power comparator, temperature sensor, VREFINT |
Pinout & Package
STM32WB15CCU6 is housed in a 7 × 7 mm UFQFPN48 package with 0.5 mm pitch, optimized for space-constrained PCB layouts and automated assembly. The package supports reflow soldering per JEDEC J-STD-020 and features exposed thermal pad for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.71–3.6 V) | Supplies both CPU and RF domains; connects to internal SMPS output or external LDO |
| VSS | Ground reference | Common return path for digital, analog, and RF sections; requires separate low-noise routing |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/Os | 37 fast I/Os total; 35 are 5 V-tolerant; support multiple alternate functions including SPI/I2C/USART/LPUART |
| RF_P, RF_N | Differential RF antenna interface | Direct connection to matching network or IPD (e.g., MLPF-WB-01E3); no external balun required |
| VBAT | Backup power supply | Enables RTC and 32 backup registers during main power loss; accepts 1.65–3.6 V |
| NRESET | Active-low reset input | Asynchronous reset signal; internal pull-up; compatible with open-drain reset supervisors |
| SWCLK/SWDIO | Serial Wire Debug interface | Two-pin debug port for Cortex-M4; supports SWD programming and real-time trace |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core real-time RF isolation | Cortex-M0+ offloads full BLE protocol stack, freeing M4 for application logic without timing interference |
| Integrated SMPS with bypass mode | Embedded step-down converter improves system efficiency vs. external LDO; intelligent bypass activates at light load |
| Hardware crypto acceleration | AES-256, PKA (ECC/RSA/DH), and TRNG enable secure OTA updates and encrypted BLE pairing without CPU overhead |
| Ultra-low-power RF operation | 4.5 mA RX current and 5.2 mA TX @ 0 dBm allow multi-year battery life in coin-cell powered sensors |
| Regulatory-compliant RF front-end | On-die balun, calibrated TX power, and precise RSSI meet FCC/ETSI radiated emission and sensitivity requirements out-of-box |
Applications
| Smart Home Sensor Node | Industrial Predictive Maintenance Tag |
|---|---|
Use Scenario: Battery-powered temperature/humidity/motion sensor transmitting data every 5 minutes to a gateway via BLE 5.4. IC Role / Device Role / Timing Role: Dual-core MCU executes sensor fusion algorithm on M4 while M0+ maintains continuous BLE advertising and connection intervals with sub-millisecond jitter. Use Value: 610 nA standby + RTC enables >5-year CR2032 battery life; integrated SMPS extends runtime by 25% vs. LDO-based designs. | Use Scenario: Vibration and temperature monitoring tag mounted on rotating machinery, reporting anomalies via BLE to edge controller. IC Role / Device Role / Timing Role: 12-bit ADC samples at 2.5 Msps for FFT-based spectral analysis; hardware crypto secures firmware updates over BLE. Use Value: AES-256 and PKA accelerate secure OTA updates by 8× vs. software-only; 190 µA/Msps ADC minimizes sensor acquisition power. |
| Medical Wearable Patch | Asset Tracking Beacon |
Use Scenario: Disposable ECG patch transmitting raw waveform data to smartphone using BLE long-range mode. IC Role / Device Role / Timing Role: M4 processes real-time QRS detection; M0+ handles BLE extended advertising and connectionless data transmission. Use Value: -95.5 dBm RX sensitivity ensures reliable link at 100 m line-of-sight; 320 KB flash stores dual firmware images for fail-safe updates. | Use Scenario: GPS-denied indoor asset tracker using BLE AoA/AoD for centimeter-level localization in warehouses. IC Role / Device Role / Timing Role: Precise RSSI and timing synchronization across multiple beacons enable angle-of-arrival estimation. Use Value: Accurate RSSI calibration (±1 dB) and 2 Mbps PHY reduce packet error rate by 40%; 37 GPIOs support multi-sensor integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core BLE MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| nRF52840 DK | Single-core Arm Cortex-M4 @ 64 MHz; no dedicated radio CPU; higher TX power (+8 dBm) but lower RX sensitivity (-95 dBm) | Lacks hardware-isolated BLE stack execution; requires software-managed RTOS scheduling for concurrent app/radio tasks | Preferred when maximum TX range is critical and deterministic radio timing is not required. |
| CC2642R1F | Dual-core (M4F + dedicated radio core); supports BLE 5.2 only; 275 KB flash; no integrated SMPS | Requires external DC/DC converter; lacks PKA and hardware ECC acceleration; lower memory density | Chosen where TI's SimpleLink SDK ecosystem and legacy BLE 5.2 compatibility outweigh need for BLE 5.4 features. |
Compared with nRF52840 DK and CC2642R1F, STM32WB15CCU6 uniquely combines BLE 5.4 certification, hardware-isolated dual-CPU architecture, integrated SMPS, and full hardware crypto suite - enabling deterministic real-time BLE operation with lowest system-level BOM count and longest battery life in compact form factor.
Availability
STM32WB15CCU6 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial predictive maintenance tags, medical wearable patches, and asset tracking beacons requiring stable component supply and long-term production support.
Supply support for STM32WB15CCU6 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32WB series is ST's ultra-low-power wireless MCU product line, engineered specifically for secure, certified, battery-operated BLE 5.x endpoints with minimal external components and robust RF performance.
FAQ
What is the maximum operating temperature range for STM32WB15CCU6?
The STM32WB15CCU6 is qualified for industrial operation from –40 °C to +105 °C ambient temperature. This extended range is validated across all electrical characteristics, including RF performance, flash endurance, and SMPS regulation stability, making it suitable for deployment in harsh environments such as factory floors or outdoor enclosures.
Does STM32WB15CCU6 support over-the-air (OTA) firmware updates?
Yes, STM32WB15CCU6 supports secure OTA firmware updates via Bluetooth Low Energy using the built-in bootloader and hardware-accelerated AES-256 encryption. The device includes 320 KB flash with PCROP protection to isolate the BLE stack and application code, enabling safe dual-bank update mechanisms with rollback capability.
Can STM32WB15CCU6 operate without an external crystal?
Yes - it integrates a 32 MHz HSE oscillator with trimming capacitors and a 32 kHz LSE for RTC, but also includes factory-trimmed internal oscillators (HSI16, MSI, LSI1/LSI2). For non-timing-critical BLE applications, the internal MSI can replace the 32 MHz crystal, reducing BOM cost and board area, though full BLE 5.4 certification requires HSE.
Which companion chip is recommended for optimal RF matching?
ST recommends the MLPF-WB-01E3 integrated passive device (IPD) for single-ended antenna matching with STM32WB15CCU6. This 3-terminal SMD filter provides impedance transformation, harmonic suppression, and ESD protection in one 1.6 × 1.6 mm package, simplifying layout and ensuring FCC/ETSI compliance without discrete tuning.
STM32WB15CCU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-UFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.2
- Modulation:
- GFSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 5.5dBm
- Sensitivity:
- -95.5dBm
- Memory Size:
- 320kB Flash, 48kB SRAM
- Serial Interfaces:
- ADC, I2C, SPI, UART, USART
- GPIO:
- 30
- Voltage - Supply:
- 1.71V ~ 3.6V
- Current - Receiving:
- 4.5mA ~ 7.7mA
- Current - Transmitting:
- 5.2mA ~ 12.5mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-UFQFPN (7x7)
STM32WB15CCU6 FAQ
1.How can I place an order for STM32WB15CCU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WB15CCU6 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 STM32WB15CCU6 reliable?
The price and inventory of STM32WB15CCU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WB15CCU6 is usually 5 days.
3.What payment methods are accepted for STM32WB15CCU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WB15CCU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WB15CCU6?
STM32WB15CCU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WB15CCU6 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 STM32WB15CCU6?
For technical support, including STM32WB15CCU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WB15CCU6 requirements.
6.How does Aetrix verify that STM32WB15CCU6 is sourced from the original manufacturer or authorized distributors?
All STM32WB15CCU6 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 STM32WB15CCU6 meets industry standards.
7.What is the process for return or replacement of STM32WB15CCU6?
All STM32WB15CCU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WB15CCU6, 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 STM32WB15CCU6 part is unused and in its original packaging.
Return procedure for STM32WB15CCU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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