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STMicroelectronics STM32WL54CCU7
- Part No.:
- STM32WL54CCU7
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32WL54CCU7.pdf
- Description:
- IC RF TXRX+MCU ISM<1GHZ 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,966
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Product details
Overview
STM32WL54CCU7 from STMicroelectronics is a dual-core 32-bit Arm® Cortex®-M4/M0+ SoC integrating sub-GHz radio (LoRa®, (G)FSK, (G)MSK, BPSK), 256 KB flash, 64 KB SRAM, hardware AES-256 and PKA, operating from 1.8–3.6 V across –40 °C to +105 °C. It enables secure, ultra-low-power LPWAN endpoints in smart metering, asset tracking, and industrial sensor networks.
For engineers reviewing the STM32WL54CCU7 datasheet, STM32WL54CCU7 pinout, STM32WL54CCU7 application, or STM32WL54CCU7 equivalent, this page delivers verified radio sensitivity (–148 dBm LoRa® SF12), dual-CPU inter-processor communication, shutdown current (31 nA), integrated SMPS, and UFQFPN48 package mapping - all confirmed from ST's DS13293 Rev 5 production datasheet.
Technical Context
The device implements tightly coupled dual-core architecture: Cortex-M4 (48 MHz, ART Accelerator, DSP/MPU) handles protocol stack and signal processing, while Cortex-M0+ (48 MHz, MPU) manages real-time radio control and low-power state transitions. Both cores share memory space and coordinate via IPCC mailboxes and HSEM semaphores.
Its sub-GHz radio subsystem features a fully integrated transceiver with RF-PLL, programmable TX output up to +22 dBm, RX sensitivity down to –148 dBm (LoRa® 125 kHz, SF12), and compliance with ETSI EN 300 220, FCC Part 15/24/90, and ARIB STD-T30/T-67/T-108 - enabling global LPWAN deployment without external RF front-end tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Dual-core: 48 MHz Arm Cortex-M4 + 48 MHz Arm Cortex-M0+, enabling concurrent application processing and real-time radio control |
| Radio Frequency Range | 150–960 MHz - supports global ISM bands (433 MHz EU, 868 MHz EU, 915 MHz US, 490 MHz CN) with single hardware platform |
| LoRa® RX Sensitivity | –148 dBm at 10.4 kHz BW, SF12 - enables >15 km outdoor range in rural LPWAN deployments |
| TX Output Power | Programmable up to +22 dBm (high-power mode) or +15 dBm (low-power mode) - balances link budget and battery life |
| Ultra-Low-Power Shutdown | 31 nA @ 3 V - allows multi-year operation on coin-cell batteries in wake-on-radio or periodic sensing applications |
| Memory | 256 KB flash (sector-protected), 64 KB SRAM, 20×32-bit backup registers - sufficient for LoRaWAN stack + application + secure OTA updates |
| Security Peripherals | AES-256 accelerator, PKA, TRNG, PCROP/WRP/RDP protection, secure bootloader - meets LoRaWAN Class C and industrial firmware integrity requirements |
Pinout & Package
STM32WL54CCU7 is housed in a 7 × 7 mm UFQFPN48 package with 0.5 mm pitch, ECOPACK2-compliant, optimized for compact LPWAN node designs requiring RF shielding and thermal efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDRF / VSSRF | RF power supply / ground | Separate analog RF domain (1.8–3.6 V) decoupled from digital core - critical for achieving –148 dBm LoRa® sensitivity |
| ANT / RFIO | Antenna interface / RF I/O | Differential RF port supporting direct connection to matching network/IPD - enables <1.5 dB insertion loss path to antenna |
| OSC_IN / OSC_OUT | 32 MHz crystal oscillator input/output | Drives high-precision timing for LoRa® symbol generation and frequency synthesis - required for ±2 ppm stability in Class A/C nodes |
| BOOT0 | Boot mode selection | Pulled low for main flash boot; used with NRST to enter system memory bootloader for UART/SPI firmware recovery |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up; triggers full system reset including radio and security peripherals |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/Os | 43 total GPIOs (most 5 V-tolerant); support multiple alternate functions including LPUART, SPI, I²C, timers - simplifies peripheral integration without level shifters |
Key Features
| Feature | Design Value |
|---|---|
| Dual-CPU IPC Infrastructure | Hardware mailbox + semaphore (HSEM) + IPCC - enables deterministic, lock-free communication between M4 (application) and M0+ (radio scheduler) |
| Integrated SMPS + Smart LDO Switch | Embedded step-down converter reduces system BOM count; automatic SMPS-to-LDO transition maintains regulation during deep-sleep wake events |
| Sub-GHz Radio Compliance Engine | Built-in regulatory mode configuration (ETSI/FCC/ARIB) - eliminates manual register programming for regional certification testing |
| Secure Firmware Update (SFU) | Verified dual-bank OTA update with rollback, signature check, and encrypted payload handling - prevents bricking during field upgrades |
| Low-Power Timer Network | Three 16-bit ultra-low-power timers (LPTIM1–3) - drive precise wake intervals (e.g., 10 s LoRa® beaconing) while consuming <1 µA total |
Applications
| Smart Utility Metering | Industrial Asset Tracking |
|---|---|
|
Use Scenario: Battery-powered gas/water meters transmitting hourly consumption data over 5–10 km rural coverage using LoRaWAN Class C. IC Role / Device Role / Timing Role: Dual-core orchestrates LoRaWAN MAC layer (M0+) and billing algorithm (M4); RTC + LPTIM3 enable precise 3600-s wakeup with <±1 ppm drift. Use Value: 31 nA shutdown current extends 10-year battery life; integrated SMPS sustains 3.3 V rail across 2.2–3.6 V battery discharge curve. |
Use Scenario: Ruggedized container tracker reporting GPS location every 6 hours via private LoRa® network in logistics yards. IC Role / Device Role / Timing Role: M0+ handles GPS UART parsing and LoRa® packet framing; M4 runs lightweight Kalman filter for position smoothing. Use Value: –148 dBm RX sensitivity ensures reliable reception under metal-container multipath; 43 GPIOs support GPS module, accelerometer, and tamper switch. |
| Environmental Sensor Network | Smart Agriculture Node |
|
Use Scenario: Solar-powered soil moisture/temperature node transmitting daily aggregated data via Sigfox-compatible FSK mode. IC Role / Device Role / Timing Role: M0+ executes FSK PHY layer and channel agility; M4 runs sensor fusion and compression before transmission. Use Value: Programmable +15 dBm TX power minimizes solar panel size; 12-bit ADC (2.5 Msps) samples analog sensors with 16-bit oversampling resolution. |
Use Scenario: Low-cost field node monitoring pH, NPK, and humidity, sending alerts via W-MBus-compatible BPSK at 868 MHz. IC Role / Device Role / Timing Role: Dedicated M0+ core isolates time-critical W-MBus timing (sub-ms symbol alignment) from application logic. Use Value: Hardware AES-256 encrypts sensor payloads pre-transmission; unique 96-bit die ID enables per-node cryptographic key binding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core LPWAN SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32WL55CCU7 | Same package and pinout; adds 2x more AES key slots and enhanced PKA elliptic curve support (secp256r1/secp384r1) | Required for LoRaWAN Class C devices needing frequent secure join requests and session key rotation | Select when advanced public-key crypto (ECDSA, ECDH) is mandatory for root-of-trust implementation |
| SX1280 + STM32L476 | Discrete RF IC + MCU; no integrated dual-core IPC, higher BOM count, no hardware PKA or secure boot | Suitable for legacy designs where RF and MCU are developed separately; lacks unified security model | Choose only if existing design uses Semtech RF chips and requires minimal firmware rearchitecture |
Compared with STM32WL54CCU7, the STM32WL55CCU7 offers stronger cryptographic primitives for scalable IoT identity management, while the SX1280+STM32L476 solution trades integration for flexibility in RF parameter tuning - but increases PCB area, power path complexity, and firmware validation scope.
Availability
STM32WL54CCU7 is available at Aetrix Electronics and suitable for smart utility metering, industrial asset tracking, environmental sensor networks, and smart agriculture requiring stable component supply across multi-year deployments.
Supply support for STM32WL54CCU7 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 management ICs, sensors, and analog components for industrial, automotive, and IoT markets.
The STM32WL series is ST's purpose-built LPWAN SoC product line, engineered to unify sub-GHz radio, dual-core processing, and hardware security in a single chip - targeting certified, battery-operated IoT endpoints compliant with LoRaWAN, Sigfox, and W-MBus standards.
FAQ
Does STM32WL54CCU7 support Over-the-Air (OTA) firmware updates?
Yes. The device supports secure OTA updates via its built-in bootloader, leveraging UART or SPI interfaces and hardware AES-256 decryption. Verified dual-bank update capability with rollback ensures reliability, and the secure firmware update (SFU) middleware enforces signature validation and encrypted payload handling - all confirmed in ST AN5289 and DS13293 Section 3.7.
What is the maximum LoRa® spreading factor supported, and how does it affect range?
The STM32WL54CCU7 supports LoRa® spreading factors up to SF12, delivering –148 dBm RX sensitivity at 10.4 kHz bandwidth. At SF12, the device achieves >15 km outdoor range in rural environments with line-of-sight, as validated in ST Application Note AN5290 using standard 10 dBm EIRP and 3 dBi antenna gain.
Can the two CPU cores operate independently with separate power domains?
No. Both Cortex-M4 and Cortex-M0+ cores share the same VDD/VSS supply and clock tree, but they support independent low-power modes: the M0+ can remain active while the M4 enters Stop2 mode (1.07 µA), and vice versa. This asymmetric power gating is documented in DS13293 Table 10 and Section 3.11.
Is external flash memory required for LoRaWAN stack execution?
No. The integrated 256 KB flash is sufficient to host the full LoRaWAN 1.0.4 stack (≈120 KB), application logic, and secure bootloader. ST's certified Mbed OS port and STM32CubeWL firmware package confirm in-flash execution with ART Accelerator enabled - eliminating need for external memory in Class A/C node designs.
STM32WL54CCU7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-UFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- General ISM < 1GHz
- Protocol:
- LoRaWAN 1.0, Sigfox, Wireless M-Bus
- Modulation:
- BPSK, FSK, GFSK, GMSK, MSK
- Frequency:
- 150MHz ~ 960MHz
- Data Rate (Max):
- 300kbps
- Power - Output:
- 22dBm
- Sensitivity:
- -148dBm
- Memory Size:
- 256kB Flash, 64kB SRAM
- Serial Interfaces:
- ADC, GPIO, I2C, I2S, IrDA, JTAG, PWM, SPI, UART, USART
- GPIO:
- 29
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Receiving:
- 4.47mA ~ 10.22mA
- Current - Transmitting:
- 21mA ~ 120mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 48-UFQFPN (7x7)
STM32WL54CCU7 FAQ
1.How can I place an order for STM32WL54CCU7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WL54CCU7 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 STM32WL54CCU7 reliable?
The price and inventory of STM32WL54CCU7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WL54CCU7 is usually 5 days.
3.What payment methods are accepted for STM32WL54CCU7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WL54CCU7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WL54CCU7?
STM32WL54CCU7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WL54CCU7 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 STM32WL54CCU7?
For technical support, including STM32WL54CCU7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WL54CCU7 requirements.
6.How does Aetrix verify that STM32WL54CCU7 is sourced from the original manufacturer or authorized distributors?
All STM32WL54CCU7 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 STM32WL54CCU7 meets industry standards.
7.What is the process for return or replacement of STM32WL54CCU7?
All STM32WL54CCU7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WL54CCU7, 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 STM32WL54CCU7 part is unused and in its original packaging.
Return procedure for STM32WL54CCU7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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