My Inquiry
My Account
STMicroelectronics STM32WB55VEQ6
- Part No.:
- STM32WB55VEQ6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 129-UFBGA
- Datasheet:
-
STM32WB55VEQ6.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 129UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,264
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32WB55VEQ6 from STMicroelectronics is a multiprotocol wireless 32-bit MCU integrating an Arm® Cortex®-M4 with FPU (64 MHz), dedicated Cortex®-M0+ radio controller, Bluetooth® 5.4 and IEEE 802.15.4 PHY/MAC, 1 MB flash, 256 KB SRAM, and ultra-low-power operation down to 13 nA shutdown mode. It targets secure, battery-powered IoT edge nodes requiring concurrent BLE and Thread/Zigbee connectivity.
For engineers reviewing the STM32WB55VEQ6 datasheet, STM32WB55VEQ6 pinout, STM32WB55VEQ6 application, or STM32WB55VEQ6 equivalent, key selection criteria include dual-CPU architecture for real-time radio stack isolation, integrated SMPS for <53 µA/MHz active efficiency, RF sensitivity of –96 dBm (BLE 1 Mbps) and –100 dBm (802.15.4), programmable +6 dBm output power, and hardware security features including AES-256, PKA, and secure firmware installation (SFI).
Technical Context
The device implements a tightly coupled dual-core architecture: the Cortex-M4 executes the application firmware while the dedicated Cortex-M0+ handles real-time Bluetooth Low Energy and 802.15.4 protocol stacks-enabling concurrent operation without CPU contention. Inter-processor communication occurs via IPCC and hardware semaphores.
Its RF subsystem integrates a 2.4 GHz transceiver with on-die balun, supports GATT caching and EATT, and complies with ETSI EN 300 328, FCC Part 15, and ARIB STD-T66. The embedded SMPS operates in intelligent bypass mode, and the ART Accelerator enables zero-wait-state execution from flash at 64 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M4 with FPU, 64 MHz max frequency, 80 DMIPS, DSP instructions, and MPU for memory protection. |
| Radio Core | Dedicated Arm® Cortex®-M0+ CPU for real-time BLE 5.4 and 802.15.4 MAC/PHY processing-offloads protocol stack from application core. |
| RF Sensitivity | –96 dBm @ 1 Mbps BLE; –100 dBm @ 802.15.4-enables robust link budget in compact antenna designs. |
| Output Power | Programmable up to +6 dBm in 1 dB steps-supports regulatory compliance and range optimization across regions. |
| Power Modes | 13 nA shutdown; 600 nA standby + RTC + 32 KB RAM; 2.1 µA stop + RTC + 256 KB RAM-extends coin-cell battery life to years. |
| Memory | 1 MB flash with PCROP sector protection; 256 KB SRAM (64 KB with parity)-secures radio stack and enables OTA updates. |
| Security | 3× AES-256 engines, HW PKA (RSA/ECC/DH), TRNG, 96-bit unique ID, SFI for secure stack installation-meets PSA Level 2 and SESIP requirements. |
Pinout & Package
STM32WB55VEQ6 is housed in a UFBGA129 package (0.5 mm pitch, 7 × 7 mm body), optimized for high-density RF layout with dedicated RFIO, VDDRF, and VSSRF pins. The package supports 72 fast I/Os (70 × 5 V-tolerant) and includes dedicated antenna matching pads per ST reference design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFIO | RF Transceiver Antenna Interface | Differential 2.4 GHz RF port; requires external matching network or IPD (e.g., MLPF-WB55-02E3) for 50 Ω impedance. |
| VDDRF / VSSRF | RF Power Supply / Ground | Isolated analog rail for RF section-must be decoupled separately to minimize noise coupling into digital domain. |
| OSC_IN / OSC_OUT | 32 MHz Crystal Oscillator Input/Output | Drives main system clock and radio timing; integrated trimming capacitors eliminate external load caps. |
| LSE_IN / LSE_OUT | 32.768 kHz RTC Crystal Interface | Enables precise timekeeping and low-power wake-up; supports crystal or external clock source. |
| BOOT0 | Boot Mode Selection | Pulled low by default; asserts high during reset to enter system memory bootloader-enables UART/SPI/I2C/USB firmware recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-CPU Isolation | Separate Cortex-M4 (application) and Cortex-M0+ (radio) cores with IPCC and HW semaphores-prevents stack corruption and ensures deterministic BLE timing. |
| Integrated SMPS | Embedded step-down converter with intelligent bypass mode-reduces active current to <53 µA/MHz and eliminates external DC/DC component count. |
| Hardware Security Engine | AES-256, PKA, TRNG, and Secure Firmware Installation (SFI)-enables certified secure boot, encrypted OTA, and key provisioning without software overhead. |
| RF Front-End Integration | On-die balun, RSSI measurement, and support for external PA-reduces BOM cost and simplifies PCB layout for FCC/CE certification. |
| Low-Power Analog | 12-bit ADC @ 4.26 Msps (200 µA/Msps), 2× ultra-low-power comparators, and buffered 2.5 V reference-enables sensor fusion with minimal power penalty. |
Applications
| Smart Home Sensor Node | Industrial Wireless Gateway |
|---|---|
Use Scenario: Battery-powered temperature/humidity/motion sensor transmitting data over BLE to hub and concurrently forming Thread mesh backbone. IC Role / Device Role / Timing Role: Dual-core MCU executing sensor acquisition (M4) and managing concurrent BLE advertising + Thread routing (M0+); RTC-driven periodic wake-up. Use Value: Single-chip solution eliminates separate radio SoC, reduces bill-of-materials, and achieves >5-year CR2032 lifetime via 13 nA shutdown and 2.1 µA stop mode with full RAM retention. |
Use Scenario: Edge gateway aggregating Modbus RTU field devices and bridging to cloud via BLE/Thread/Zigbee and USB host. IC Role / Device Role / Timing Role: M4 runs Linux-compatible RTOS and protocol translation; M0+ handles real-time radio packet scheduling and interference mitigation in noisy 2.4 GHz industrial environments. Use Value: Hardware-accelerated AES-256 and PKA enable end-to-end encryption between field sensors and cloud, meeting IEC 62443-3-3 SL2 requirements. |
| Medical Wearable Monitor | Asset Tracking Tag |
Use Scenario: FDA-classified wearable continuously monitoring ECG/SpO₂ and streaming encrypted data via BLE to smartphone or hospital hub. IC Role / Device Role / Timing Role: M4 processes biosignal algorithms and manages USB CDC for clinical diagnostics; M0+ maintains BLE connection with adaptive advertising interval and EATT for large data bursts. Use Value: Integrated 2.5 V reference buffer and 12-bit ADC with hardware oversampling deliver medical-grade signal integrity; ULPMark™ CP score of 303 validates energy efficiency for CE/FDA battery life claims. |
Use Scenario: GPS-denied indoor/outdoor asset tracker reporting location via BLE proximity beacons and 802.15.4-based LPWAN backhaul. IC Role / Device Role / Timing Role: M4 manages GNSS assist data parsing and motion-triggered wake-up; M0+ executes low-duty-cycle 802.15.4 beaconing and BLE scan response with RSSI-based proximity estimation. Use Value: Programmable +6 dBm output and –100 dBm 802.15.4 sensitivity extend operational range in concrete/steel environments; 600 nA standby mode enables 10+ year battery life on primary lithium cells. |
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 | Single-core ARM Cortex-M4F (64 MHz); no dedicated radio CPU-BLE/802.15.4 stack runs on same core; no integrated SMPS; 1 MB flash, 256 KB RAM. | Limited real-time determinism for concurrent BLE + Thread; higher active current (~6.5 mA RX); requires external DC/DC for best efficiency. | Select when cost-sensitive designs prioritize SDK maturity over dual-core isolation and integrated power management. |
| TI CC2652RB | ARM Cortex-M4F + dedicated Sensor Controller (not M0+); integrated BAW resonator eliminates 32 MHz crystal; 352 KB flash, 80 KB RAM; no hardware PKA or SFI. | Superior RF stability in thermal-varying environments; lower BOM count due to BAW; lacks PSA-certifiable secure boot and encrypted OTA capabilities. | Select for high-volume consumer devices where crystal-free operation and TI's SimpleLink SDK outweigh security and memory scalability needs. |
Compared with nRF52840 and CC2652RB, STM32WB55VEQ6 uniquely delivers hardware-isolated radio processing, integrated SMPS for sub-53 µA/MHz efficiency, and PSA Level 2–certifiable security-making it optimal for regulated industrial, medical, and smart infrastructure deployments requiring long-term firmware trust and power predictability.
Availability
STM32WB55VEQ6 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, long-lifecycle support, and full traceability through ST's qualified manufacturing process.
Supply support for STM32WB55VEQ6 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 automotive chips with vertical fabrication and broad ecosystem support.
This part belongs to the STM32WB wireless MCU product line-engineered specifically for secure, ultra-low-power, multiprotocol IoT endpoints that must simultaneously run BLE 5.4 and IEEE 802.15.4 stacks without compromising application performance or battery life.
FAQ
What development tools and software support are available for STM32WB55VEQ6?
ST provides STM32CubeWB firmware package with BLE/Thread/Zigbee protocol stacks, STM32CubeMX for pin/configurator setup, STM32CubeIDE for debugging, and the STM32WB5MMG evaluation board. Full support for OpenThread, Zephyr RTOS, and AWS IoT ExpressLink is included, along with SFI-compliant secure boot utilities and key provisioning tools.
Does STM32WB55VEQ6 require external components for RF matching?
Yes-while the chip integrates a balun, an external matching network is required between RFIO and the antenna. ST recommends companion IPDs such as MLPF-WB55-02E3 for 50 Ω matching and FCC/CE pre-certification. Reference layouts and S-parameter models are provided in AN5289 and the UM2380 user manual.
How is secure firmware update implemented on this MCU?
Secure firmware update uses Secure Firmware Installation (SFI), which validates signed firmware images using ECDSA-256 before flashing. The process leverages hardware AES-256 for decryption, PKA for signature verification, and PCROP-protected flash sectors to prevent rollback or unauthorized access-fully compliant with PSA Certified Level 2 requirements.
Can STM32WB55VEQ6 operate without an external 32 MHz crystal?
No-the 32 MHz HSE crystal is mandatory for RF timing accuracy and BLE/802.15.4 compliance. The internal 16 MHz RC oscillator lacks the ±20 ppm stability required by Bluetooth SIG and IEEE 802.15.4 standards. However, the integrated trimming capacitors eliminate need for external load capacitors.
STM32WB55VEQ6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WB
- Package/Case:
- 129-UFBGA
- Packaging:
- Tray
- 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:
- 512kB 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 129-UFBGA (7x7)
STM32WB55VEQ6 FAQ
1.How can I place an order for STM32WB55VEQ6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WB55VEQ6 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 STM32WB55VEQ6 reliable?
The price and inventory of STM32WB55VEQ6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WB55VEQ6 is usually 5 days.
3.What payment methods are accepted for STM32WB55VEQ6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WB55VEQ6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WB55VEQ6?
STM32WB55VEQ6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WB55VEQ6 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 STM32WB55VEQ6?
For technical support, including STM32WB55VEQ6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WB55VEQ6 requirements.
6.How does Aetrix verify that STM32WB55VEQ6 is sourced from the original manufacturer or authorized distributors?
All STM32WB55VEQ6 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 STM32WB55VEQ6 meets industry standards.
7.What is the process for return or replacement of STM32WB55VEQ6?
All STM32WB55VEQ6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WB55VEQ6, 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 STM32WB55VEQ6 part is unused and in its original packaging.
Return procedure for STM32WB55VEQ6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WB55VEQ6 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…
