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STMicroelectronics STM32WLE4JCI6
- Part No.:
- STM32WLE4JCI6
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 73-UFBGA
- Datasheet:
-
STM32WLE4JCI6.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 73UFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
STM32WLE4JCI6 from STMicroelectronics is a multiprotocol LPWAN 32-bit Arm® Cortex®-M4 microcontroller integrating sub-GHz radio (LoRa®, (G)FSK, (G)MSK, BPSK), 256 KB flash, 64 KB SRAM, and hardware AES-256 encryption. It operates from 150–960 MHz with RX sensitivity down to –148 dBm (LoRa® SF12) and TX output up to +22 dBm, targeting battery-powered IoT sensor nodes in smart metering and remote monitoring.
For engineers reviewing the STM32WLE4JCI6 datasheet, STM32WLE4JCI6 pinout, STM32WLE4JCI6 application, or STM32WLE4JCI6 equivalent, key selection criteria include LoRa®/FSK dual-modulation support, ultra-low-power Stop2 mode (1.07 µA), integrated SMPS, RF regulatory compliance (ETSI EN 300 220, FCC Part 15), and UFBGA73 package footprint compatibility.
Technical Context
The device integrates an Arm Cortex-M4 core with ART Accelerator for zero-wait-state execution at up to 48 MHz, coupled with a fully autonomous sub-GHz transceiver supporting simultaneous protocol stacks (e.g., LoRaWAN® and proprietary FSK). Its RF subsystem includes a fractional-N RF-PLL, programmable IF filters, and direct-conversion receiver architecture.
Power management combines an embedded SMPS step-down converter, LDO fallback, and five low-power modes - including Shutdown (31 nA), Standby+RTC (360 nA), and Stop2+RTC (1.07 µA) - all coordinated via hardware semaphore (HSEM) and independent power domains for MCU and radio sections.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 @ 48 MHz with DSP instructions and MPU - enables real-time signal processing and secure multitasking in constrained edge devices. |
| Radio Frequency Range | 150–960 MHz - supports global LPWAN bands (EU 868 MHz, US 915 MHz, CN 470 MHz) without external synthesizer. |
| RX Sensitivity | –148 dBm @ LoRa® 10.4 kHz, SF12 - achieves >15 km outdoor range with single-hop link budget in rural deployments. |
| TX Output Power | +22 dBm max (high-power path) - meets ETSI Class 1 and FCC Part 15.247 peak EIRP limits with integrated PA. |
| Low-Power Mode Current | 1.07 µA in Stop2 + RTC - sustains decade-long battery life in wake-on-RF-event applications using coin-cell batteries. |
| Memory | 256 KB flash / 64 KB SRAM - accommodates dual-firmware OTA updates and cryptographic key storage with PCROP protection. |
| Security | AES-256 hardware accelerator + PKA + true RNG - enables end-to-end data confidentiality and device authentication per LoRaWAN® 1.1 Join Procedure. |
Pinout & Package
STM32WLE4JCI6 uses a 73-ball UFBGA package (5 × 5 mm, 0.4 mm pitch) with 43 general-purpose I/Os (most 5 V-tolerant), dedicated RFIO and RFO pins for antenna matching, and separate VDDRF/VSSRF supply rails for noise isolation. The package complies with ECOPACK2 environmental standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFIO | Sub-GHz RF input/output differential port | Direct connection to external balun/IPD; supports both TX and RX paths in TDD mode. |
| RFO_HP | High-power RF output | Drives +22 dBm output via internal PA; requires external bandpass filter for harmonics suppression. |
| RFO_LP | Low-power RF output | Provides +15 dBm output with lower current draw; used for short-range, energy-constrained links. |
| VDDRF / VSSRF | Dedicated RF power/ground | Isolates sensitive analog RF section from digital noise; mandatory decoupling with 100 nF + 1 nF near ball. |
| OSC_IN / OSC_OUT | 32 MHz crystal oscillator interface | Supports high-accuracy timing for LoRa® symbol synchronization and frequency stability < ±2 ppm. |
| VBAT | Backup power supply | Retains RTC and 20×32-bit backup registers during main power loss; accepts 1.65–3.6 V. |
Key Features
| Feature | Design Value |
|---|---|
| Multiprotocol radio engine | Single-chip support for LoRa®, (G)FSK, (G)MSK, BPSK - eliminates need for external transceivers or protocol gateways in hybrid network deployments. |
| Integrated SMPS | Embedded step-down converter with automatic LDO fallback - reduces system BOM by removing external DC/DC and improves efficiency across 1.8–3.6 V input range. |
| Hardware security suite | AES-256 + PKA + RNG + UID + PCROP - enables certified LoRaWAN® Class C node implementation with secure key injection and firmware IP protection. |
| Ultra-low-power timers | Three 16-bit ultra-low-power timers (LPTIM1–3) - provide precise wake-up scheduling and pulse generation while consuming < 150 nA in Stop mode. |
| RF regulatory compliance | Built-in support for ETSI EN 300 220/300 113/301 166, FCC Part 15/24/90, ARIB STD-T30/T-67 - accelerates regional certification without RF redesign. |
Applications
| Smart Utility Metering | Asset Tracking |
|---|---|
Use Scenario: Battery-powered water/gas meters transmitting hourly consumption data over 5–10 km rural LoRaWAN® networks. IC Role / Device Role / Timing Role: System-on-chip radio MCU handling physical layer modulation, MAC-layer packet assembly, and secure OTA updates. Use Value: –148 dBm LoRa® sensitivity and +22 dBm TX enable single-hop coverage across large utility zones; 1.07 µA Stop2 mode extends battery life beyond 15 years. | Use Scenario: GPS-enabled cargo trackers reporting location every 6 hours via adaptive LoRa®/FSK based on signal quality. IC Role / Device Role / Timing Role: Dual-role controller managing GNSS acquisition, RF transmission, and motion-triggered wake-up using LPTIM and EXTI. Use Value: Integrated multiprotocol radio allows fallback to FSK in high-interference urban areas; hardware AES ensures payload confidentiality during transit. |
| Environmental Sensor Networks | Industrial Predictive Maintenance |
Use Scenario: Soil moisture/temperature nodes deployed in agricultural fields, operating unattended for 10+ years on AA batteries. IC Role / Device Role / Timing Role: Autonomous sensing node executing ADC sampling, LoRa® packetization, and adaptive duty cycling via RTC alarm. Use Value: 12-bit ADC (2.5 Msps) captures fast transients; shutdown current of 31 nA minimizes self-discharge during multi-day sleep intervals. | Use Scenario: Vibration and temperature monitors on rotating machinery, transmitting spectral data via compressed FSK bursts during scheduled maintenance windows. IC Role / Device Role / Timing Role: Real-time edge processor running FFT on sensor data before RF transmission, leveraging Cortex-M4 DSP extensions. Use Value: 48 MHz CPU with ART Accelerator executes 1024-point FFT in < 2 ms; SMPS efficiency > 85% sustains operation under wide industrial voltage fluctuations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LPWAN microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32WLE5JCI6 | Same UFBGA73 package and pinout; adds 256 KB flash (vs. 256 KB shared in WLE4), higher RF output linearity, and enhanced ADC oversampling. | Required for applications needing >128 KB user code space or 16-bit ADC resolution via hardware oversampling. | Select WLE5 when firmware complexity exceeds WLE4's memory partitioning limits or when higher dynamic range ADC is critical. |
| SX1262 + STM32L476RG | Discrete RF + MCU solution; SX1262 offers identical LoRa®/FSK performance but lacks integrated security accelerators and SMPS. | Suitable for designs requiring RF flexibility (e.g., custom matching, external TCXO) and separate MCU upgrade paths. | Choose discrete architecture only if existing PCB layout mandates RF/MCU separation or if legacy STM32L4 firmware reuse outweighs BOM and certification cost savings. |
Compared with STM32WLE5JCI6, the WLE4 offers identical RF performance and ultra-low-power modes at reduced flash partitioning - ideal for cost-sensitive, fixed-function nodes. Versus SX1262+STM32L476RG, the WLE4 eliminates inter-chip timing skew, reduces PCB area by 40%, and cuts RF certification effort by integrating pre-validated matching networks.
Availability
STM32WLE4JCI6 is available at Aetrix Electronics and suitable for smart metering, asset tracking, environmental monitoring, and industrial predictive maintenance requiring stable component supply across multi-year production cycles.
Supply support for STM32WLE4JCI6 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 analog products for industrial, automotive, and IoT markets.
The STM32WLE series targets ultra-low-power, long-range wireless applications - combining Arm Cortex-M4 processing, certified sub-GHz radio, and hardware security in a single die to accelerate LPWAN endpoint development.
FAQ
What RF certifications does STM32WLE4JCI6 support out-of-the-box?
STM32WLE4JCI6 is pre-qualified for ETSI EN 300 220 (Europe), FCC CFR 47 Parts 15/24/90 (USA), and ARIB STD-T30/T-67 (Japan) when used with ST-recommended IPD matching networks (e.g., ST25DV04K companion chip). Full certification requires final antenna integration testing per regional requirements.
Does STM32WLE4JCI6 support over-the-air (OTA) firmware updates?
Yes - it includes a ROM-based bootloader supporting UART and SPI interfaces, plus dedicated OTA update capability via LoRaWAN® Class C or FSK-based proprietary protocols. Firmware images are validated using CRC32 and optionally decrypted with AES-256 before execution.
How does the integrated SMPS improve system efficiency compared to external DC/DC converters?
The embedded SMPS achieves >85% efficiency across 1.8–3.6 V input and load currents from 10 µA to 200 mA, eliminating external inductor/capacitor components and reducing PCB area by ~25 mm². Its seamless transition to LDO mode below 10 µA maintains regulation without software intervention.
Can STM32WLE4JCI6 operate in both LoRa® and FSK modes simultaneously?
No - the radio operates in one modulation mode at a time, but firmware can dynamically switch between LoRa®, (G)FSK, (G)MSK, and BPSK without hardware reset. Mode switching latency is < 100 µs, enabling adaptive protocol selection based on real-time link quality metrics.
STM32WLE4JCI6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 73-UFBGA
- 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:
- 43
- 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:
- 73-UFBGA (5x5)
STM32WLE4JCI6 FAQ
1.How can I place an order for STM32WLE4JCI6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WLE4JCI6 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 STM32WLE4JCI6 reliable?
The price and inventory of STM32WLE4JCI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WLE4JCI6 is usually 5 days.
3.What payment methods are accepted for STM32WLE4JCI6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WLE4JCI6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WLE4JCI6?
STM32WLE4JCI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WLE4JCI6 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 STM32WLE4JCI6?
For technical support, including STM32WLE4JCI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WLE4JCI6 requirements.
6.How does Aetrix verify that STM32WLE4JCI6 is sourced from the original manufacturer or authorized distributors?
All STM32WLE4JCI6 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 STM32WLE4JCI6 meets industry standards.
7.What is the process for return or replacement of STM32WLE4JCI6?
All STM32WLE4JCI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WLE4JCI6, 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 STM32WLE4JCI6 part is unused and in its original packaging.
Return procedure for STM32WLE4JCI6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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