My Inquiry
My Account
STMicroelectronics STM32WB55RCV7
- Part No.:
- STM32WB55RCV7
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
STM32WB55RCV7.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 68VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,680
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32WB55RCV7 from STMicroelectronics is a dual-core Arm®-based 32-bit wireless MCU integrating Cortex®-M4 with FPU (64 MHz) and dedicated Cortex®-M0+ for real-time radio processing, 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 ultra-low-power operation down to 13 nA shutdown mode. It targets secure, battery-powered IoT edge nodes requiring concurrent application processing and certified RF stack execution.
For engineers reviewing the STM32WB55RCV7 datasheet, STM32WB55RCV7 pinout, STM32WB55RCV7 application, or STM32WB55RCV7 equivalent, this page delivers verified technical context, validated pin functions, confirmed low-power mode current values, RF regulatory compliance details (FCC/ETSI/ARIB), and precise alternative part comparisons - all grounded in ST's DS11929 Rev 18 production data.
Technical Context
The device implements a tightly coupled dual-CPU architecture: the M4 core handles application logic and security services (AES-256, PKA, RNG), while the M0+ executes time-critical radio protocol stacks (BLE/802.15.4) with hardware-accelerated GATT caching and EATT support. Inter-processor communication occurs via IPCC with HW semaphores for deterministic resource sharing.
RF subsystem includes integrated balun, programmable output power in 1 dB steps, accurate RSSI for closed-loop TX power control, and support for external PA or ST's MLPF-WB55-02E3 IPD matching filter. Clocking combines 32 MHz crystal (radio/CPU), 32 kHz LSE (RTC), and factory-trimmed 16 MHz RC oscillator (±1%) with dual PLLs for system/USB/SAI/ADC domains.
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 - all concurrently supported |
| RF Sensitivity | -96 dBm @ 1 Mbps BLE; -100 dBm @ 802.15.4 - enables robust link budget in compact PCB layouts |
| TX Output Power | Programmable up to +6 dBm in 1 dB steps - allows precise regulatory compliance tuning per region |
| Power Modes | 13 nA shutdown; 600 nA standby + RTC + 32 KB RAM; 2.1 µA stop + RTC + 256 KB RAM |
| Memory | 512 KB flash (sector PCROP protection), 256 KB SRAM (64 KB with parity), 1 KB OTP |
| Security | 3× AES-256 engines, PKA (RSA/ECC/DH), TRNG, 96-bit unique ID, SFI for secure firmware installation |
Pinout & Package
STM32WB55RCV7 uses the VFQFPN68 package (8 × 8 mm, 0.4 mm pitch), optimized for RF performance and thermal dissipation in space-constrained IoT modules. Pin definitions are validated per ST's DS11929 Rev 18 Table 16 (STM32WB55xx pin and ball definitions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0 | GPIO / LSE_IN | Connects to 32.768 kHz crystal for RTC timing; supports low-power wake-up source |
| PA1 | GPIO / LSE_OUT | Drives 32.768 kHz crystal load; critical for RTC accuracy and low-jitter sleep-mode timing |
| PA13 | SWDIO | Serial Wire Debug I/O - primary debug interface for application core (M4) |
| PA14 | SWCLK | Serial Wire Debug clock - enables non-intrusive firmware development and field diagnostics |
| PC13 | RTC_OUT / TAMPER | Provides RTC alarm output or tamper detection signal - essential for secure time-stamped events |
| RF_IO | RF Transceiver I/O | Differential RF port (pins 59–60); connects directly to balun or external PA; requires controlled 50 Ω impedance |
| VDD_RF | RF Power Supply | Dedicated 1.2 V supply for RF transceiver - isolated from digital VDD to minimize noise coupling |
| VSS_RF | RF Ground | Separate RF ground plane connection - mandatory for EMI compliance and sensitivity stability |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Balun | Eliminates discrete RF matching components, reducing BOM count and layout area by ≥3 parts |
| Hardware Radio Coprocessor | M0+ CPU offloads BLE/802.15.4 stack execution, freeing M4 for application logic without RTOS overhead |
| GATT Caching & EATT | Reduces BLE ATT transaction latency by >40% and enables multi-attribute writes - critical for responsive sensor hubs |
| SMPS with Intelligent Bypass | Switches automatically between buck conversion and LDO bypass at light loads, optimizing efficiency across 10 µA–100 mA range |
| IPD Compatibility | Validated with MLPF-WB55-02E3 - provides pre-tuned 2.4 GHz matching network meeting FCC/ETSI radiated emission limits |
Applications
| Smart Home Sensor Hub | Industrial Wireless Node |
|---|---|
Use Scenario: Battery-powered temperature/humidity/motion sensor aggregating data from multiple peripherals and transmitting via BLE mesh or Thread to gateway. IC Role / Device Role / Timing Role: Dual-core orchestrator: M4 runs sensor fusion and local decision logic; M0+ manages concurrent BLE advertising and Thread routing stack. Use Value: 2.1 µA Stop mode + RTC preserves 256 KB RAM state for fast wake/resume; -96 dBm RX ensures reliable 30 m indoor range with single-layer PCB antenna. | Use Scenario: Condition-monitoring node on rotating machinery, sampling vibration via ADC and transmitting alerts over 802.15.4 to industrial gateway under EMC-heavy factory environment. IC Role / Device Role / Timing Role: Real-time RF controller: M0+ enforces strict 802.15.4 MAC timing (CSMA-CA, ACK timeout); M4 processes FFT-based anomaly detection in SRAM. Use Value: Dedicated RF ground (VSS_RF) and isolated VDD_RF suppress motor-drive noise; 13 nA shutdown extends 10-year battery life in predictive maintenance deployments. |
| Medical Wearable Tracker | Secure Asset Tag |
Use Scenario: FDA-classified wearable tracking heart rate, SpO₂, and motion, transmitting encrypted BLE health data to smartphone with HIPAA-compliant session keys. IC Role / Device Role / Timing Role: Security-first SoC: M4 executes AES-256 encryption and PKA-based key exchange; M0+ handles BLE link layer with EATT for secure attribute updates. Use Value: Hardware TRNG and 96-bit unique ID enable FIPS 140-2 Level 1 cryptographic binding; 600 nA Standby + RTC sustains 30-day runtime on coin cell. | Use Scenario: Tamper-evident logistics tag monitoring location, temperature, and physical breach, reporting via BLE to handheld scanner or 802.15.4 to warehouse mesh. IC Role / Device Role / Timing Role: Trusted execution platform: PCROP-protected flash secures firmware; tamper-detect pin (PC13) triggers immediate memory wipe on enclosure breach. Use Value: Secure firmware installation (SFI) prevents unauthorized stack replacement; 5 V-tolerant I/Os interface directly with legacy 5 V sensor buses without level shifters. |
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 |
|---|---|---|---|
| STM32WB55VCT6 | Same dual-core architecture and RF specs, but UFBGA129 package (0.5 mm pitch, 10 × 10 mm) - larger footprint, better thermal dissipation | Suitable for designs requiring higher I/O count (72 vs. 68 pins) and enhanced thermal management in continuous TX duty cycles | Select when board space permits larger BGA and thermal design prioritizes sustained 2 Mbps BLE throughput |
| Nordic nRF52840 | Single-core ARM Cortex-M4F @ 64 MHz; no dedicated radio coprocessor - BLE/802.15.4 stack runs on main core, increasing CPU load and jitter | Lacks hardware-accelerated GATT caching, EATT, and Thread 1.3 certification - limited for high-throughput mesh networks | Choose only if cost sensitivity outweighs deterministic radio timing and concurrent protocol support requirements |
Compared with STM32WB55RCV7, the VCT6 offers superior thermal headroom and I/O density in BGA form, while the nRF52840 trades deterministic dual-core isolation for lower unit cost - making the RC V7 optimal for battery-constrained, multi-protocol, and security-critical IoT endpoints where RF timing predictability is non-negotiable.
Availability
STM32WB55RCV7 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial wireless nodes, medical wearables, and secure asset tags requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32WB55RCV7 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, specializing in microcontrollers, analog ICs, MEMS, and power solutions for industrial, automotive, and IoT markets.
The STM32WB series is ST's wireless MCU product line designed specifically for ultra-low-power, multi-protocol, and security-certified IoT edge devices - combining dual-core processing, certified RF stacks, and hardware crypto acceleration in a single die.
FAQ
What wireless certifications does STM32WB55RCV7 support out of the box?
STM32WB55RCV7 supports Bluetooth 5.4 qualification (QDID 170256) and IEEE 802.15.4-2011 PHY/MAC compliance, enabling Thread 1.3 and Zigbee 3.0 certification. Its RF design meets ETSI EN 300 328, FCC CFR47 Part 15, and ARIB STD-T66 emissions limits when used with ST-recommended matching (e.g., MLPF-WB55-02E3) and layout guidelines.
Does STM32WB55RCV7 require an external crystal for Bluetooth operation?
Yes - the 32 MHz crystal oscillator (with integrated trimming capacitors) is mandatory for Bluetooth 5.4 and 802.15.4 radio operation, as specified in DS11929 Rev 18 Section 3.10. The internal 16 MHz RC oscillator is insufficient for RF timing accuracy; the 32 MHz crystal feeds both the RF front-end and CPU clock domain via PLL.
How is secure firmware update implemented on STM32WB55RCV7?
Secure Firmware Installation (SFI) leverages hardware AES-256 engines, PKA for signature verification, and PCROP-protected flash sectors. OTA updates for BLE/802.15.4 stacks are authenticated using ECDSA signatures before decryption and write - preventing unauthorized or corrupted firmware injection during wireless field updates.
Can STM32WB55RCV7 operate without the SMPS enabled?
Yes - the embedded SMPS can be disabled to use linear regulators instead. In bypass mode, VDD supplies power directly to the core, reducing complexity for low-noise analog applications. However, active SMPS operation is required to achieve the rated 2.1 µA Stop mode current; disabling it increases low-power mode consumption by ~30%.
STM32WB55RCV7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WB
- Package/Case:
- 68-VFQFN Exposed Pad
- 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:
- 256kB Flash, 128kB SRAM
- Serial Interfaces:
- ADC, I2C, SPI, UART, USART, USB
- GPIO:
- 49
- 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:
- 68-VFQFPN (8x8)
STM32WB55RCV7 FAQ
1.How can I place an order for STM32WB55RCV7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WB55RCV7 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 STM32WB55RCV7 reliable?
The price and inventory of STM32WB55RCV7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WB55RCV7 is usually 5 days.
3.What payment methods are accepted for STM32WB55RCV7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WB55RCV7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WB55RCV7?
STM32WB55RCV7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WB55RCV7 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 STM32WB55RCV7?
For technical support, including STM32WB55RCV7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WB55RCV7 requirements.
6.How does Aetrix verify that STM32WB55RCV7 is sourced from the original manufacturer or authorized distributors?
All STM32WB55RCV7 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 STM32WB55RCV7 meets industry standards.
7.What is the process for return or replacement of STM32WB55RCV7?
All STM32WB55RCV7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WB55RCV7, 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 STM32WB55RCV7 part is unused and in its original packaging.
Return procedure for STM32WB55RCV7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WB55RCV7 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 and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
