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STMicroelectronics STM32WLE5CCU6
- Part No.:
- STM32WLE5CCU6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WLE5CCU6.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:761
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Product details
Overview
STM32WLE5CCU6 from STMicroelectronics is a multiprotocol LPWAN 32-bit Arm® Cortex®-M4 microcontroller integrating LoRa®, (G)FSK, (G)MSK and BPSK radio transceivers, 256 KB flash, 64 KB SRAM, and hardware AES-256 encryption. It operates from 150–960 MHz, achieves –148 dBm LoRa® RX sensitivity (SF12, 10.4 kHz), and delivers +22 dBm TX output power. Designed for battery-powered IoT endpoints in smart metering, asset tracking, and environmental monitoring.
For engineers reviewing the STM32WLE5CCU6 datasheet, STM32WLE5CCU6 pinout, STM32WLE5CCU6 application, or STM32WLE5CCU6 equivalent, key selection criteria include sub-GHz RF performance across regulatory bands (ETSI EN 300 220, FCC Part 15), ultra-low-power operation (31 nA shutdown), integrated SMPS, and dual-core secure boot support via PCROP and PKA.
Technical Context
The STM32WLE5CCU6 integrates a single Arm Cortex-M4 core with ART Accelerator enabling zero-wait-state execution at up to 48 MHz, alongside a fully autonomous sub-GHz radio subsystem supporting LoRa®, FSK, MSK and BPSK modulation schemes. Its RF front-end includes programmable TX power (–10 to +22 dBm), adaptive RX gain control, and RF-PLL with fractional-N synthesis.
Power management combines an embedded SMPS step-down converter, LDO fallback mode, and five low-power states - including Stop2 (1.07 µA) and Standby+RTC (360 nA) - all coordinated via dedicated power control logic and voltage detectors (BOR/PVD). The device supports OTA firmware updates and secure boot using hardware-accelerated AES-256 and PKA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 @ 48 MHz with DSP/MPU, ART Accelerator for zero-wait-state flash execution |
| Radio Frequency Range | 150–960 MHz - covers global ISM bands (EU 863–870 MHz, US 902–928 MHz, CN 470–510 MHz) |
| LoRa® RX Sensitivity | –148 dBm at SF12/10.4 kHz - enables long-range, low-data-rate communication in noisy environments |
| TX Output Power | Programmable up to +22 dBm - meets ETSI/FCC conducted power limits without external PA |
| Ultra-Low-Power Modes | Shutdown: 31 nA; Standby+RTC: 360 nA; Stop2+RTC: 1.07 µA - extends 10+ year battery life in sensor nodes |
| Memory | 256 KB flash (sector protection via PCROP/WRP), 64 KB SRAM, 20×32-bit backup registers - supports robust OTA updates and state retention |
| Security | AES-256 hardware accelerator, true RNG, 96-bit die ID, PKA for ECC key generation - enables LoRaWAN Class C secure join and payload encryption |
Pinout & Package
STM32WLE5CCU6 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), optimized for compact LPWAN node designs with integrated RF matching network support. Pin layout separates analog RF, digital I/O, and power domains to minimize coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA15, PB0–PB15, PC0–PC15, PD2 | General-purpose I/O | Up to 43 GPIOs, most 5 V-tolerant; support multiple alternate functions (SPI/I2C/USART/LPUART) |
| RFIO_1 / RFIO_2 | RF transceiver antenna interface | Differential RF input/output pins for direct connection to balun/IPD; supports 50 Ω impedance matching |
| VDD_RF / VDD_PA | RF power supply rails | Independent 1.8–3.6 V supplies for RF core and power amplifier - enable precise noise isolation |
| OSC_IN / OSC_OUT | 32 MHz crystal oscillator interface | Supports high-accuracy timing for LoRa® symbol synchronization and frequency stability ±20 ppm |
| VREF+ | Analog reference input | External reference for ADC/DAC calibration; improves measurement accuracy under varying supply conditions |
Key Features
| Feature | Design Value |
|---|---|
| Multiprotocol Sub-GHz Radio | Single-chip LoRa®, (G)FSK, (G)MSK, BPSK support - eliminates need for external transceivers in hybrid protocol deployments |
| Integrated SMPS + Smart LDO Switch | Reduces system BOM count and improves efficiency across load range (up to 90% at 10 mA); auto-switches to LDO during deep sleep |
| Hardware Security Engine | AES-256 + PKA + RNG + UID - accelerates LoRaWAN join procedure and prevents firmware cloning in field-deployed nodes |
| OTA Firmware Update Ready | Bootloader with USART/SPI interfaces and dual-bank flash support - enables field-upgradable firmware without physical access |
| Temperature-Compensated RTC | 32 kHz oscillator with calibration register - maintains ±1.5 ppm accuracy over –40 °C to +105 °C for time-synced wakeups |
Applications
| Smart Utility Metering | Industrial Asset Tracking |
|---|---|
Use Scenario: Battery-powered gas/water/electricity meters transmitting hourly consumption data over LoRaWAN to gateways. IC Role / Device Role / Timing Role: System-on-chip MCU + radio transceiver handling sensor acquisition, LoRa® modulation, secure payload encryption, and scheduled transmissions. Use Value: 15+ year battery life enabled by 31 nA shutdown mode and optimized Stop2 current (1.07 µA), reducing maintenance cost and field service frequency. | Use Scenario: GPS-enabled trackers on shipping containers reporting location every 6 hours via Sigfox™ or private FSK network. IC Role / Device Role / Timing Role: Dual-role controller managing GNSS module power sequencing, RF transmission timing, and tamper detection via ultra-low-power comparators. Use Value: Integrated (G)FSK + LoRa® allows fallback to regional protocols; +22 dBm TX ensures reliable link budget in metal-rich cargo environments. |
| Environmental Sensor Network | Smart Agriculture Node |
Use Scenario: Soil moisture, temperature and ambient light sensors deployed in remote fields, transmitting data daily via LoRaWAN. IC Role / Device Role / Timing Role: Low-power sensing hub aggregating analog inputs (ADC), performing local threshold logic, and initiating scheduled RF bursts. Use Value: 12-bit ADC with hardware oversampling (up to 16-bit effective resolution) delivers precision measurements while minimizing active time and energy per reading. | Use Scenario: Solar-powered irrigation controllers monitoring soil EC/pH and triggering valve actuation based on real-time thresholds. IC Role / Device Role / Timing Role: Real-time decision engine using LPUART for sensor interface, DAC for analog actuator control, and RTC-triggered sampling cycles. Use Value: Embedded SMPS enables efficient conversion from variable solar input (2.5–5.5 V), while 5 V-tolerant I/O simplifies direct connection to industrial sensors and solenoids. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LPWAN microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SX1262 + STM32L476 | Discrete transceiver + separate MCU - requires external RF matching, higher PCB area, no integrated security engine | Lacks hardware AES/PKA; needs external crypto IC for LoRaWAN Class C join; higher BoM cost | Preferred when RF band flexibility beyond 960 MHz is required or legacy STM32L4 software stack must be reused |
| RA4W1 | Arm Cortex-M4 MCU with integrated 2.4 GHz BLE radio only - no sub-GHz capability or LoRa® support | Restricted to short-range mesh networks; unsuitable for wide-area LPWAN deployment | Applicable only for Bluetooth-based sensor hubs where gateway proximity is guaranteed and range < 100 m |
Compared with SX1262+STM32L476, STM32WLE5CCU6 reduces bill-of-materials and design complexity through monolithic integration; compared with RA4W1, it uniquely delivers certified sub-GHz LPWAN connectivity essential for utility and rural IoT deployments.
Availability
STM32WLE5CCU6 is available at Aetrix Electronics and suitable for smart metering, industrial telemetry, environmental monitoring, and agricultural IoT applications requiring stable component supply across multi-year production cycles.
Supply support for STM32WLE5CCU6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM32WLE5 series belongs to ST's LPWAN-optimized MCU product line, engineered specifically for secure, battery-operated IoT edge nodes needing long-range wireless connectivity and regulatory compliance out-of-the-box.
FAQ
What RF certifications does the STM32WLE5CCU6 support out of the box?
The STM32WLE5CCU6 is pre-certified for ETSI EN 300 220 (Europe), FCC CFR 47 Parts 15/24/90 (USA), and ARIB STD-T30/T-67/T-108 (Japan). Its integrated RF subsystem meets conducted emission and spurious response requirements without additional filtering, accelerating time-to-market for region-specific deployments.
Does the STM32WLE5CCU6 support Over-The-Air (OTA) firmware updates?
Yes - the device includes a factory-programmed bootloader supporting UART and SPI interfaces, dual-bank flash memory with sector protection, and hardware CRC acceleration. This enables secure, atomic firmware swaps during active network operation without risking bricking or data loss.
How does the integrated SMPS improve system efficiency compared to traditional LDO-based designs?
The embedded SMPS achieves >85% efficiency across 10 µA–100 mA loads, reducing average power dissipation by up to 4× versus LDOs in battery-powered applications. Its automatic switch to LDO mode during Stop2/Standby preserves ultra-low quiescent current (<1 µA), maintaining optimal efficiency across all operating modes.
Can the STM32WLE5CCU6 operate in both LoRaWAN and proprietary FSK protocols simultaneously?
No - the radio subsystem operates in one modulation mode at a time. However, firmware can dynamically reconfigure the transceiver between LoRa®, (G)FSK, (G)MSK and BPSK via register writes, enabling protocol agility within a single hardware platform for multi-standard gateways or hybrid network migration.
STM32WLE5CCU6 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
- Protocol:
- LoRaWAN 1.0, Sigfox
- Modulation:
- BPSK, GFSK, GMSK, FSK, MSK
- Frequency:
- 150MHz ~ 960MHz
- Data Rate (Max):
- 300kbps
- Power - Output:
- 22dBm
- Sensitivity:
- -148dBm
- Memory Size:
- 256kB Flash
- Serial Interfaces:
- ADC, GPIO, I2C, SPI, IrDA, UART, USART
- GPIO:
- 29
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Receiving:
- 4.82mA
- Current - Transmitting:
- 21mA ~ 120mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-UFQFPN (7x7)
STM32WLE5CCU6 FAQ
1.How can I place an order for STM32WLE5CCU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WLE5CCU6 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 STM32WLE5CCU6 reliable?
The price and inventory of STM32WLE5CCU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WLE5CCU6 is usually 5 days.
3.What payment methods are accepted for STM32WLE5CCU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WLE5CCU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WLE5CCU6?
STM32WLE5CCU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WLE5CCU6 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 STM32WLE5CCU6?
For technical support, including STM32WLE5CCU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WLE5CCU6 requirements.
6.How does Aetrix verify that STM32WLE5CCU6 is sourced from the original manufacturer or authorized distributors?
All STM32WLE5CCU6 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 STM32WLE5CCU6 meets industry standards.
7.What is the process for return or replacement of STM32WLE5CCU6?
All STM32WLE5CCU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WLE5CCU6, 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 STM32WLE5CCU6 part is unused and in its original packaging.
Return procedure for STM32WLE5CCU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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