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STMicroelectronics STM32WB50CGU5
- Part No.:
- STM32WB50CGU5
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WB50CGU5.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,608
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Product details
Overview
STM32WB50CGU5 from STMicroelectronics is a dual-core 32-bit wireless 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 (Thread/Zigbee® 3.0) on a single die. It delivers -96 dBm RX sensitivity (BLE), +4 dBm programmable TX power, 1 MB flash, 128 KB SRAM, and ultra-low-power operation down to 14 nA in shutdown mode - enabling secure, battery-operated IoT edge nodes such as smart sensors and BLE mesh endpoints.
For engineers reviewing the STM32WB50CGU5 datasheet, STM32WB50CGU5 pinout, STM32WB50CGU5 application, or STM32WB50CGU5 equivalent, key selection criteria include dual-CPU real-time radio coexistence, integrated balun support, PCROP-protected flash for certified stack deployment, and verified ETSI/FCC/ARIB regulatory compliance for global RF certification.
Technical Context
The device implements a tightly coupled dual-processor architecture: the M4 executes application firmware while the M0+ handles time-critical BLE/802.15.4 PHY/MAC layers via IPCC inter-processor communication. Radio subsystem includes integrated balun, RSSI-based closed-loop TX power control, and support for advertising extensions and EATT.
Power management features include five low-power modes (Shutdown, Standby, Stop 0–2), hardware-accelerated wake-up from RTC or GPIO, and independent voltage scaling for core/peripheral domains. Clock system integrates 32 MHz HSE with trimming capacitors, dual LSE/LSI oscillators, and PLL for precise RF timing synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | Dual-core: Arm Cortex-M4 @ 64 MHz (FPU, ART accelerator) + Cortex-M0+ @ 32 MHz (dedicated radio stack execution) |
| Wireless Protocols | Bluetooth 5.4 (LE) and IEEE 802.15.4-2011 PHY/MAC - enabling Thread 1.3 and Zigbee 3.0 certified implementations |
| RF Performance | -96 dBm RX sensitivity (BLE 1 Mbps); +4 dBm max TX output power in 1 dB steps; integrated balun reduces external component count |
| Memory | 1 MB flash with PCROP sector protection for secure radio stack storage; 128 KB SRAM (64 KB with parity) |
| Low-Power Modes | 14 nA shutdown; 700 nA standby + RTC + 32 KB RAM; 2.25 µA stop + RTC + 128 KB RAM |
| Analog Peripherals | 12-bit ADC up to 2.13 Msps (16-bit oversampled), temperature sensor, VREFINT, true RNG, and 96-bit unique ID |
| Security | Hardware AES-256, PKA for ECC/RSA/DH, SFI for secure firmware install, CRC unit, and OTP memory |
Pinout & Package
STM32WB50CGU5 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per STMicroelectronics DS13047 Rev 9 Section 4 (Pinouts and pin description) and Table 14 (pin and ball definitions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 2.0–3.6 V analog/digital core supply; decoupling required per datasheet layout guidelines |
| VSS | Ground reference | Common return path for analog/digital domains; separate VSSA/VSSD pins enable noise isolation |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | Up to 30 fast I/Os; 28 are 5 V-tolerant; support multiple alternate functions including SPI/I2C/USART |
| RF_P, RF_N | Differential RF transceiver interface | 2.4 GHz differential antenna connection; requires impedance-matched PCB trace or IPD (e.g., MLPF-WB-01E3) |
| OSC_IN / OSC_OUT | HSE crystal oscillator terminals | 32 MHz crystal input with integrated trimming capacitors - eliminates external load caps for simplified BOM |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset button or supervisor IC assertion |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core real-time radio coexistence | M4 application CPU and M0+ radio CPU operate concurrently with hardware IPC (IPCC) and semaphores - eliminating software scheduling latency for BLE/802.15.4 timing-critical tasks |
| Integrated RF front-end | Built-in balun and RF matching reduce external components by ≥30% versus discrete RF solutions - lowering BOM cost and PCB area in compact IoT designs |
| Regulatory-compliant RF design | Pre-verified ETSI EN 300 328, FCC Part 15, ARIB STD-T66 compliance - accelerates end-product certification for global markets |
| Secure over-the-air updates | OTA-capable bootloader with AES-256 encryption and PCROP-protected flash sectors - enabling field-deployed firmware patches without exposing stack binaries |
| Ultra-low-power sensor node operation | 2.25 µA Stop mode + RTC + full 128 KB RAM retention - supports multi-year battery life in intermittent-sensing applications (e.g., environmental monitors) |
Applications
| Smart Home Sensor Node | Industrial Wireless Gateway |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes via BLE mesh to a central hub. IC Role / Device Role / Timing Role: Dual-core MCU acts as BLE peripheral node with M0+ handling link-layer timing and M4 managing sensor fusion and GATT caching. Use Value: 700 nA standby current + RTC wake-up ensures >5-year CR2032 battery life; integrated balun eliminates RF tuning labor during production. | Use Scenario: Edge gateway collecting data from 50+ 802.15.4 end devices and forwarding via Ethernet/Wi-Fi to cloud infrastructure. IC Role / Device Role / Timing Role: Acts as Thread Border Router with M4 running Linux-compatible network stack and M0+ managing concurrent 802.15.4 MAC layer operations. Use Value: Hardware semaphores prevent resource contention between cores; 128 KB RAM enables simultaneous BLE provisioning and Thread routing tables. |
| Medical Wearable Monitor | Asset Tracking Tag |
Use Scenario: Chest-worn ECG patch using BLE to stream raw waveform data to smartphone app with real-time anomaly detection. IC Role / Device Role / Timing Role: M4 performs real-time DSP filtering and ML inference; M0+ maintains BLE connection with EATT for efficient attribute transfer. Use Value: 12-bit ADC at 2.13 Msps captures high-fidelity biosignals; AES-256 + PKA enables HIPAA-compliant encrypted transmission. | Use Scenario: GPS-less indoor asset tag using BLE AoA/AoD or 802.15.4 TDOA for sub-meter location tracking in warehouses. IC Role / Device Role / Timing Role: Functions as synchronized beacon node with precise 32 MHz HSE clock and RSSI-based distance estimation. Use Value: Accurate RSSI calibration (-96 dBm sensitivity) and hardware timestamping enable <1 m localization accuracy without external timing references. |
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 |
|---|---|---|---|
| Nordic nRF52840 DK | Single-core ARM Cortex-M4F @ 64 MHz; no dedicated radio CPU - BLE/802.15.4 stack runs on same core, increasing interrupt latency | Limited to BLE-only or proprietary 802.15.4 stacks; lacks native Thread/Zigbee 3.0 certification support | Preferred for cost-sensitive BLE-only designs where dual-core determinism is not required |
| TI CC2652RB | Arm Cortex-M4F + integrated RF BAW resonator (no external crystal needed); lower TX power (+5 dBm) but no PCROP flash protection | Stronger RF stability in thermally varying environments; weaker security model - no hardware PKA or SFI for certified stack loading | Chosen when crystal-free RF design and thermal robustness outweigh need for secure OTA update enforcement |
Compared with nRF52840 DK and CC2652RB, STM32WB50CGU5 uniquely combines hardware-isolated radio processing, regulatory-certified multi-protocol support, and silicon-enforced firmware security - making it optimal for safety-critical, field-upgradable, and globally certified IoT deployments.
Availability
STM32WB50CGU5 is available at Aetrix Electronics and suitable for industrial sensor networks, medical wearables, and smart home gateways requiring stable component supply across multi-year product lifecycles.
Supply support for STM32WB50CGU5 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, analog ICs, power management, and MEMS sensors for industrial, automotive, and consumer markets.
The STM32WB series targets secure, low-power wireless edge devices - combining dual-core processing, multi-protocol RF, and hardware security to simplify development of certified IoT endpoints and gateways.
FAQ
What wireless protocol stacks are pre-certified for STM32WB50CGU5?
ST provides Bluetooth 5.4 qualified stack (v12.0+) and Thread 1.3/Zigbee 3.0 certified software packages validated against ETSI EN 300 328, FCC Part 15, and ARIB STD-T66. These stacks run exclusively on the M0+ core and are delivered as binary images with SFI signature verification enabled by default.
Does STM32WB50CGU5 support external power amplifiers?
Yes - the RF_P/RF_N differential outputs support external PA integration via matching network. The datasheet specifies DC blocking and bias tee requirements, and ST reference designs (e.g., STEVAL-WB50KS1) demonstrate +20 dBm output using SKY66112-39 PA with automatic gain control managed by M0+ firmware.
How is flash memory protected against unauthorized access or tampering?
Flash protection uses PCROP (Proprietary Code Read-Out Protection) to lock designated sectors - preventing read/write/erase access even under debug interface. Combined with SFI (Secure Firmware Installation), only cryptographically signed firmware images can be loaded into protected regions, enforcing chain-of-trust from boot to runtime.
What development tools are officially supported for STM32WB50CGU5?
ST's STM32CubeWB ecosystem includes STM32CubeIDE (with M4/M0+ dual-debug capability), STM32CubeMX for pin/peripheral configuration, and STSW-BLUENRG-DK for BLE/802.15.4 stack evaluation. Hardware tools include the STM32WB5MMG-DK discovery kit and ST-LINK/V2-1 debugger with SWD/JTAG support.
STM32WB50CGU5 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:
- 802.15.4, Bluetooth
- Protocol:
- Bluetooth v5.0, Thread, Zigbee®
- Modulation:
- GFSK
- Frequency:
- 2.402GHz ~ 2.48GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 4dBm
- Sensitivity:
- -100dBm
- Memory Size:
- 1MB Flash, 128kB SRAM
- Serial Interfaces:
- I2C, SPI, UART, USART
- GPIO:
- 30
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Receiving:
- 7.9mA
- Current - Transmitting:
- 8.8mA ~ 12mA
- Operating Temperature:
- -10°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-UFQFPN (7x7)
STM32WB50CGU5 FAQ
1.How can I place an order for STM32WB50CGU5 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WB50CGU5 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 STM32WB50CGU5 reliable?
The price and inventory of STM32WB50CGU5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WB50CGU5 is usually 5 days.
3.What payment methods are accepted for STM32WB50CGU5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WB50CGU5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WB50CGU5?
STM32WB50CGU5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WB50CGU5 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 STM32WB50CGU5?
For technical support, including STM32WB50CGU5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WB50CGU5 requirements.
6.How does Aetrix verify that STM32WB50CGU5 is sourced from the original manufacturer or authorized distributors?
All STM32WB50CGU5 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 STM32WB50CGU5 meets industry standards.
7.What is the process for return or replacement of STM32WB50CGU5?
All STM32WB50CGU5 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WB50CGU5, 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 STM32WB50CGU5 part is unused and in its original packaging.
Return procedure for STM32WB50CGU5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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