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STMicroelectronics STM32WB09KEV7TR
- Part No.:
- STM32WB09KEV7TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
STM32WB09KEV7TR.pdf
- Description:
- ULTRA-LOW-POWER, ARM CORTEX-M0+
- Quantity:
- Payment:
- Shipping:
Inventory:3,165
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Product details
Overview
STM32WB09KEV7TR from STMicroelectronics is an ultra-low-power dual-core wireless SoC integrating an Arm® Cortex®-M0+ MCU (64 MHz) and a dedicated BlueNRG radio coprocessor for Bluetooth® LE 5.4 and 2.4 GHz proprietary protocols. It delivers -104 dBm RX sensitivity at 125 Kbit/s, +8 dBm programmable TX output, 512 KB flash, 64 KB RAM, and hardware AES-128/TRNG/PKA security. Used in battery-powered asset trackers and BLE mesh nodes requiring long runtime and secure over-the-air updates.
For engineers reviewing the STM32WB09KEV7TR datasheet, STM32WB09KEV7TR pinout, STM32WB09KEV7TR application, or STM32WB09KEV7TR equivalent, key selection criteria include Bluetooth 5.4 feature support (Direction Finding, LE Secure Connections), Deepstop mode current (0.9 µA with LSE), VFQFPN32 package I/O count (20 pins, 5 V tolerant), and integrated SMPS efficiency in 1.7–3.6 V systems.
Technical Context
The device implements a partitioned Bluetooth® LE stack: time-critical Link Layer operations run on the DMA-based BlueNRG coprocessor, while host stack and application code execute on the Cortex®-M0+. This separation ensures deterministic timing for advertising, connection events, and isochronous channels without CPU intervention.
Its RF subsystem uses a low-IF receiver architecture with integrated balun and supports simultaneous multi-role operation (e.g., central + peripheral + broadcaster). The SMPS regulator dynamically supplies 1.2–1.9 V to digital domains, reducing active-mode current by up to 30% versus LDO-only operation at 3.3 V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm® Cortex®-M0+, 64 MHz max - enables real-time BLE host stack execution alongside application logic |
| Bluetooth® LE | Compliant with Core Spec v5.4 - supports Direction Finding, Periodic Advertising with Responses, and LE Power Control for precise location and low-latency sync |
| RX Sensitivity | -104 dBm @ 125 Kbit/s - extends range >1 km in long-range mode for outdoor asset tracking |
| TX Output Power | +8 dBm programmable - allows antenna matching optimization without external PA in compact PCB layouts |
| Ultra-Low Power | 0.9 µA Deepstop (LSE + RAM retained) - enables 10+ year battery life in wake-on-RF sensor nodes |
| Security Hardware | AES-128 co-processor + TRNG (NIST SP 800-90B) + PKA - accelerates ECC key generation and ECDSA signing for secure firmware updates |
| Memory | 512 KB flash + 64 KB SRAM (4 banks) - supports dual-bank OTA updates with zero downtime and isolated secure boot partitions |
Pinout & Package
VFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with exposed thermal pad. All 20 GPIOs are 5 V tolerant, support wakeup, and retain state in Deepstop mode. VSSRF pins must be connected to ground plane per RF layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Digital power supply | 1.7–3.6 V input; powers I/O ring, peripherals, and SMPS/LDO regulators |
| VSS, VSSRF | Analog/digital ground | Separate RF ground plane required; VSSRF must connect directly to ground for noise isolation |
| PA0–PA15, PB0–PB4 | General-purpose I/O | 20 pins total; all support EXTI wakeup, analog ADC inputs, and 5 V tolerance |
| RF_P, RF_N | Differential RF interface | Direct connection to internal balun; requires 50 Ω single-ended antenna via matching network |
| BOOT0 | Boot mode select | High at reset enables system memory bootloader; low boots from main flash |
| RSTN | Active-low reset input | Asynchronous external reset; triggers PADRESETn affecting all peripherals except RTC and debug |
Key Features
| Feature | Design Value |
|---|---|
| Partitioned BLE stack architecture | BlueNRG coprocessor handles Link Layer timing-critical tasks, freeing Cortex®-M0+ for application and host stack - eliminates jitter in connection intervals |
| Integrated SMPS regulator | Programmable 1.2–1.9 V output reduces active current vs. LDO; bypass mode enabled when VDD ≤ 1.9 V - simplifies power design across voltage ranges |
| Hardware PKA accelerator | Supports ECC scalar multiplication (521-bit max) and RSA exponentiation (3136-bit max) - cuts key exchange time from ms to µs for secure pairing |
| Deepstop mode retention | RAM banks SRAM0 always retained; SRAM1–SRAM3 user-configurable - enables fast resume with full context preservation after RF-triggered wakeup |
| RF front-end integration | Built-in balun + AGC + I/Q demodulator - eliminates discrete RF matching components and improves sensitivity consistency across temperature (-40°C to +105°C) |
Applications
| Asset Tracking | Smart Lighting Control |
|---|---|
Use Scenario: Battery-powered GPS-free indoor/outdoor tag reporting position via BLE mesh or gateway. IC Role / Device Role / Timing Role: Dual-role BLE node (peripheral + observer) with Direction Finding AoA/AoD support and periodic advertising synchronization. Use Value: -104 dBm sensitivity at 125 Kbit/s enables reliable reception at >200 m in warehouse environments; 0.9 µA Deepstop extends CR2477 battery life beyond 5 years. | Use Scenario: Self-contained LED driver node in DALI-2 or Matter-over-BLE lighting networks. IC Role / Device Role / Timing Role: BLE Mesh provisioner and light controller with LPUART for DALI interface and hardware AES for secure firmware updates. Use Value: Integrated 12-bit ADC monitors LED current/temperature; hardware PKA signs OTA update packages in <100 µs, preventing rollback attacks. |
| Fitness Wearables | Industrial Sensor Node |
Use Scenario: Compact wrist-worn device measuring heart rate, motion, and ambient light with BLE streaming. IC Role / Device Role / Timing Role: BLE central collecting data from multiple sensors; Cortex®-M0+ runs motion algorithm while BlueNRG handles concurrent connections. Use Value: 20 5 V-tolerant GPIOs interface directly to analog sensors and I²C peripherals; TRNG feeds BLE encryption keys meeting NIST SP 800-90B entropy requirements. | Use Scenario: Wireless vibration/temperature monitor in predictive maintenance systems operating in harsh industrial settings. IC Role / Device Role / Timing Role: Standalone edge node with RTC timestamping, 12-bit ADC for analog sensor conditioning, and BLE advertisement of FFT coefficients. Use Value: -40°C to +105°C operating range ensures reliability near motors; hardware CRC unit validates sensor data integrity before BLE transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core BLE SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52840 DK | ARM Cortex-M4F core, no integrated SMPS, higher active current (4.8 mA TX @ 0 dBm) | Lacks hardware PKA and true random number generator compliant with NIST SP 800-90B | Preferred for floating-point sensor fusion; less suitable for FIPS-aligned secure boot or ultra-long-life battery designs |
| Texas Instruments CC2652RB | Integrated BAW resonator eliminates external crystal; lower RX sensitivity (-96 dBm @ 1 Mbit/s) | No hardware AES acceleration; relies on software crypto libraries | Better for cost-sensitive consumer devices where crystal BOM reduction outweighs security and sensitivity needs |
Compared with nRF52840 DK and CC2652RB, STM32WB09KEV7TR uniquely combines BLE 5.4 Direction Finding, hardware PKA for ECC key generation, and 0.9 µA Deepstop - making it optimal for certified medical wearables and industrial asset trackers demanding both longevity and cryptographic assurance.
Availability
STM32WB09KEV7TR is available at Aetrix Electronics and suitable for industrial sensor nodes, BLE mesh lighting controllers, and medical-grade fitness wearables requiring stable component supply and long-term lifecycle support.
Supply support for STM32WB09KEV7TR 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, designing and manufacturing microcontrollers, power ICs, sensors, and wireless SoCs for industrial, automotive, and consumer markets.
The STM32WB series targets ultra-low-power wireless applications requiring Bluetooth 5.x and secure firmware updates, combining Arm Cortex-M cores with ST's patented RF technology and hardware security accelerators.
FAQ
What is the maximum supported Bluetooth® LE data rate and how is it achieved?
The STM32WB09KEV7TR supports up to 2 Mbit/s PHY data rate using the Bluetooth LE 5.0 2M PHY mode. This is implemented entirely in hardware by the BlueNRG coprocessor, enabling high-throughput sensor streaming without CPU overhead. The 2M mode operates with the same packet structure and error correction as 1M mode but doubles symbol rate, reducing airtime by 50% and improving power efficiency per bit transmitted.
Does this device require an external crystal for Bluetooth® LE operation?
Yes - the STM32WB09KEV7TR requires a 32 MHz crystal oscillator for Bluetooth LE radio timing accuracy. The integrated trimming capacitors eliminate need for external load caps, but the crystal itself (e.g., NX3225GA series) must be placed within 5 mm of the HSE pins with tight layout control. The 32 kHz LSE crystal is optional if using internal LSI for Deepstop wakeup.
How is secure firmware update implemented in hardware?
Secure firmware updates leverage three hardware blocks: the Public Key Accelerator (PKA) verifies ECDSA signatures on update images using stored root public keys; the AES-128 co-processor decrypts encrypted payloads; and flash write protection prevents overwrite of active bank during dual-bank swap. Boot ROM enforces signature validation before executing any user code from flash.
Can the integrated SMPS be disabled for use with external power regulation?
Yes - the SMPS can be fully bypassed by connecting its output directly to VDD and disabling the SMPS_EN bit in the PWRC register. In this mode, the device operates using only the internal MLDO and LPREG regulators. External 1.2 V or 1.8 V supplies may feed VDD12i/VDD12o directly, but VDDIO must remain within 1.7–3.6 V for I/O compatibility.
STM32WB09KEV7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WB
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.4
- Modulation:
- GFSK
- Frequency:
- -
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 8dBm
- Sensitivity:
- -104dBm
- Memory Size:
- 512kB Flash, 64kB RAM
- Serial Interfaces:
- ADC, GPIO, I2C, I2S, IrDA, JTAG, PWM, SPI, UART, USART
- GPIO:
- 20
- Voltage - Supply:
- 1.7V ~ 3.6V
- Current - Receiving:
- 3.6mA ~ 9.1mA
- Current - Transmitting:
- 4.9mA ~ 9.7mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-VFQFPN (5x5)
STM32WB09KEV7TR FAQ
1.How can I place an order for STM32WB09KEV7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WB09KEV7TR 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 STM32WB09KEV7TR reliable?
The price and inventory of STM32WB09KEV7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WB09KEV7TR is usually 5 days.
3.What payment methods are accepted for STM32WB09KEV7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WB09KEV7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WB09KEV7TR?
STM32WB09KEV7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WB09KEV7TR 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 STM32WB09KEV7TR?
For technical support, including STM32WB09KEV7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WB09KEV7TR requirements.
6.How does Aetrix verify that STM32WB09KEV7TR is sourced from the original manufacturer or authorized distributors?
All STM32WB09KEV7TR 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 STM32WB09KEV7TR meets industry standards.
7.What is the process for return or replacement of STM32WB09KEV7TR?
All STM32WB09KEV7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32WB09KEV7TR, 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 STM32WB09KEV7TR part is unused and in its original packaging.
Return procedure for STM32WB09KEV7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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