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STMicroelectronics STM32WB55VGY7TR
- Part No.:
- STM32WB55VGY7TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 100-UFBGA, WLCSP
- Datasheet:
-
STM32WB55VGY7TR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 100WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:14,830
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Product details
Overview
STM32WB55VGY7TR 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+ radio controller, supporting Bluetooth® 5.4 and IEEE 802.15.4 PHY/MAC (Thread 1.3, Zigbee® 3.0), with -96 dBm BLE RX sensitivity, +6 dBm programmable TX power, and integrated balun for BOM reduction. It targets ultra-low-power IoT edge nodes such as smart sensors and secure wireless gateways.
For engineers reviewing the STM32WB55VGY7TR datasheet, STM32WB55VGY7TR pinout, STM32WB55VGY7TR application, or STM32WB55VGY7TR equivalent, key selection considerations include dual-CPU real-time radio coexistence, RF regulatory compliance (FCC/ETSI/ARIB), OTA update capability via BLE/802.15.4, and hardware security features including AES-256, PKA, and secure firmware installation (SFI).
Technical Context
The device implements a tightly coupled dual-CPU architecture: the Cortex-M4 executes application firmware while the Cortex-M0+ handles real-time radio stack processing via IPCC interprocessor communication, enabling deterministic timing for BLE advertising extensions and EATT. The RF subsystem includes a fully integrated 2.4 GHz transceiver with on-die balun, RSSI measurement, and support for external PA.
Power management combines an embedded SMPS step-down converter with intelligent bypass mode, five-level BOR, and seven low-power modes - including 13 nA shutdown and 2.1 µA Stop mode with RTC + 256 KB RAM retention - optimized for battery-operated sensor nodes requiring multi-year operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | Dual-core: Arm Cortex-M4 @ 64 MHz (FPU, ART Accelerator) + Cortex-M0+ for radio stack |
| Wireless Protocols | Bluetooth 5.4 (LE), IEEE 802.15.4-2011 PHY/MAC, Thread 1.3, Zigbee 3.0 |
| RF Sensitivity | -96 dBm @ 1 Mbps BLE, -100 dBm @ 802.15.4 - enables robust link budget in noisy environments |
| TX Output Power | Programmable up to +6 dBm in 1 dB steps - supports flexible range/power trade-offs |
| Memory | 1 MB flash (PCROP sector protection), 256 KB SRAM (64 KB with parity) |
| Security | 3× AES-256 engines, HW PKA (RSA/ECC/DH), TRNG, 96-bit unique ID, SFI for secure stack loading |
| Low-Power Modes | 13 nA shutdown, 600 nA standby + RTC + 32 KB RAM, 2.1 µA stop + RTC + 256 KB RAM |
Pinout & Package
STM32WB55VGY7TR is housed in a WLCSP100 package (100-ball, 0.4 mm pitch, 7 × 7 mm body), optimized for space-constrained IoT modules. Pin functions are validated per ST's DS11929 Rev 18, Table 16 (STM32WB55xx pin definitions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0 | GPIO / LSE_OUT / ADC1_IN0 | Configurable I/O supporting low-power RTC clock output or analog sensing |
| RF_IO | RF Transceiver I/O | Differential RF port connected to internal balun - requires matched 50 Ω antenna interface |
| VDD_RF | RF Power Supply | Dedicated 1.2 V supply for RF block - decoupling critical for emission compliance |
| VBAT | Backup Power | Supplies RTC and backup registers during main power loss - enables calendar persistence |
| NRST | Reset Input | Active-low reset with internal pull-up - compatible with standard push-button or supervisor ICs |
Key Features
| Feature | Design Value |
|---|---|
| Dual-CPU Real-Time Radio Isolation | Separate Cortex-M0+ handles BLE/802.15.4 MAC/PHY, freeing M4 for application logic without timing interference |
| Integrated RF Balun | Eliminates discrete matching network - reduces PCB area, BOM count, and RF tuning effort |
| GATT Caching & EATT Support | Reduces host-side memory footprint and improves ATT transaction throughput in BLE mesh applications |
| Hardware Crypto Acceleration | AES-256, PKA, and TRNG enable secure OTA updates and end-to-end encrypted sensor data pipelines |
| SMPS with Intelligent Bypass | Switching regulator for efficiency >85% at medium loads; auto-bypasses to LDO under light load for ultra-low quiescent current |
Applications
| Smart Home Sensor Node | Industrial Wireless Gateway |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes over BLE to a hub. IC Role / Device Role / Timing Role: Dual-core MCU manages sensor acquisition, BLE advertising, and secure OTA updates; M0+ ensures precise radio timing while M4 handles encryption and local analytics. Use Value: 2.1 µA Stop mode + RTC + full RAM retention enables >5-year battery life using CR2032, verified per DS11929 Section 6.3.7. | Use Scenario: Edge gateway aggregating data from 20+ 802.15.4 end devices and forwarding via Ethernet or cellular. IC Role / Device Role / Timing Role: Acts as Thread Border Router with concurrent BLE provisioning interface; M0+ processes 802.15.4 MAC layer while M4 runs OpenThread stack and TLS-secured cloud uplink. Use Value: Hardware-accelerated AES-256 and PKA enable secure key exchange and encrypted payload forwarding without CPU overhead penalty. |
| Medical Wearable | Asset Tracking Tag |
Use Scenario: ECG patch transmitting raw waveform snippets via BLE to smartphone app with configurable sampling rate. IC Role / Device Role / Timing Role: M4 performs real-time QRS detection and waveform compression; M0+ maintains BLE connection with minimal latency jitter for streaming. Use Value: 12-bit ADC @ 4.26 Msps with hardware oversampling delivers clinical-grade signal fidelity while staying within 53 µA/MHz active power envelope. | Use Scenario: GPS-less indoor asset tag using BLE AoA/AoD or 802.15.4-based RTLS with periodic beaconing. IC Role / Device Role / Timing Role: MCU serves as location engine - computes angle-of-arrival from multiple anchors using IQ samples captured via RF_IO pins. Use Value: Accurate RSSI measurement (<±1 dB) and programmable TX power enable calibrated distance estimation across diverse building materials. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32WB55RGV6 | Same die, VFQFPN68 package (8×8 mm), no WLCSP ball grid - higher thermal mass, easier rework | Suitable for prototyping or larger PCBs where WLCSP assembly is impractical | Select when board-level testability or hand-soldering feasibility outweighs size constraints |
| nRF52840 DK | Single-core ARM Cortex-M4F @ 64 MHz, no dedicated radio CPU; Nordic SoftDevice stack runs on same core | Limited real-time determinism for concurrent BLE + custom protocol stacks; no native 802.15.4 MAC | Choose only if BLE-only use case and software-defined radio flexibility are prioritized over hardware-isolated timing guarantees |
Compared with STM32WB55VGY7TR, the VFQFPN68 variant offers identical functionality with relaxed assembly requirements, while the nRF52840 lacks hardware-separated radio processing - making it unsuitable for time-critical dual-protocol coexistence or certified Thread border router implementations.
Availability
STM32WB55VGY7TR is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial wireless gateways, medical wearables, and asset tracking tags requiring stable component supply across multi-year production cycles.
Supply support for STM32WB55VGY7TR 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 analog components for industrial, automotive, and consumer markets.
The STM32WB series is ST's ultra-low-power wireless MCU product line, engineered specifically for secure, multiprotocol IoT endpoints requiring simultaneous BLE and 802.15.4 connectivity with hardware-enforced security and long battery life.
FAQ
What is the maximum operating temperature range for STM32WB55VGY7TR?
The STM32WB55VGY7TR is rated for industrial operation from –40 °C to +105 °C ambient temperature, validated per DS11929 Section 6.3.2. This extended range supports deployment in harsh environments such as factory floors, outdoor utility meters, and automotive cabin modules without derating.
Does STM32WB55VGY7TR support over-the-air firmware updates?
Yes - it supports secure OTA updates for both Bluetooth Low Energy and 802.15.4 stacks via its built-in bootloader, leveraging hardware AES-256 encryption and secure firmware installation (SFI) to prevent unauthorized image injection. Updates are delivered through standard GATT services or Thread commissioning interfaces.
How is RF regulatory compliance addressed in this device?
The STM32WB55VGY7TR meets ETSI EN 300 328, EN 300 440, FCC CFR47 Part 15, and ARIB STD-T66 requirements out-of-the-box when used with ST-recommended reference layouts and companion IPDs (e.g., MLPF-WB55-02E3). Certification-ready design files and test reports are available under NDA from ST.
Can the integrated SMPS be disabled in favor of external regulation?
Yes - the embedded SMPS can be bypassed via the SMPS_EN pin to use an external 1.2 V supply for VDD_CORE, or disabled entirely to operate from the internal LDO. This flexibility allows designers to optimize for noise-sensitive analog performance or simplify power tree design in low-current applications.
STM32WB55VGY7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WB
- Package/Case:
- 100-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4, Bluetooth
- Protocol:
- Bluetooth v5.3, Thread, Zigbee®
- Modulation:
- GFSK
- Frequency:
- 2.405GHz ~ 2.48GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 6dBm
- Sensitivity:
- -100dBm
- Memory Size:
- 1MB Flash, 256kB SRAM
- Serial Interfaces:
- ADC, I2C, SPI, UART, USART, USB
- GPIO:
- 72
- Voltage - Supply:
- 1.71V ~ 3.6V
- Current - Receiving:
- 4.5mA ~ 7.9mA
- Current - Transmitting:
- 5.2mA ~ 12.7mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 100-WLCSP (4.4x4.38)
STM32WB55VGY7TR FAQ
1.How can I place an order for STM32WB55VGY7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WB55VGY7TR 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 STM32WB55VGY7TR reliable?
The price and inventory of STM32WB55VGY7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WB55VGY7TR is usually 5 days.
3.What payment methods are accepted for STM32WB55VGY7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WB55VGY7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WB55VGY7TR?
STM32WB55VGY7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WB55VGY7TR 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 STM32WB55VGY7TR?
For technical support, including STM32WB55VGY7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WB55VGY7TR requirements.
6.How does Aetrix verify that STM32WB55VGY7TR is sourced from the original manufacturer or authorized distributors?
All STM32WB55VGY7TR 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 STM32WB55VGY7TR meets industry standards.
7.What is the process for return or replacement of STM32WB55VGY7TR?
All STM32WB55VGY7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32WB55VGY7TR, 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 STM32WB55VGY7TR part is unused and in its original packaging.
Return procedure for STM32WB55VGY7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WB55VGY7TR Tags
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ESP32-D0WD-V3
Espressif Systems
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ESP8266EX
Espressif Systems
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ESP32-S3
Espressif Systems
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NRF24L01P-R7
Nordic Semiconductor ASA
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NRF24L01P-R
Nordic Semiconductor ASA
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ESP32-U4WDH
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DA14531-00000OG2
Renesas
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ESP32-C6FH4
Espressif Systems
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DA14531-00000FX2
Renesas
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NRF24L01P-T
Nordic Semiconductor ASA
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NRF52810-QCAA-R
Nordic Semiconductor ASA
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ESP32-S3FN8
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