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STMicroelectronics STM32L476VCT6
- Part No.:
- STM32L476VCT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L476VCT6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:447
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Product details
Overview
STM32L476VCT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 1 MB flash, 128 KB SRAM, USB OTG FS, LCD controller, and integrated SMPS support. It delivers 39 µA/MHz in SMPS-run mode and supports -40 °C to 105 °C operation - deployed in battery-powered medical sensors and portable industrial HMIs.
For engineers reviewing the STM32L476VCT6 datasheet, STM32L476VCT6 pinout, STM32L476VCT6 application, or STM32L476VCT6 equivalent, key selection criteria include its dual-voltage I/O (1.08 V–3.6 V), 114 fast I/Os (most 5 V-tolerant), 3× 12-bit ADCs (5 Msps), and low-power timer availability in Stop 2 mode.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a 32-bit Cortex-M4 core with FPU and MPU. Its FlexPowerControl architecture supports seven low-power modes, including Shutdown (30 nA), Standby with RTC (420 nA), and Stop 2 (1.1 µA), all with sub-4 µs wakeup latency.
Clock system includes three PLLs (for system, USB, and audio), internal multispeed oscillator auto-trimmed by LSE (<±0.25% accuracy), and dedicated clock trees for peripherals like SAI, CAN, and SDMMC. Analog subsystem features two 12-bit DACs, two op-amps with PGA, and two ultra-low-power comparators - all with independent supply domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) |
| Power Efficiency | 39 µA/MHz in SMPS-run mode @3.3 V; 30 nA in Shutdown mode |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× op-amps with PGA, 2× comparators |
| Connectivity | USB OTG FS, CAN 2.0B, 5× USART, 3× SPI, 3× I²C, 2× SAI, SDMMC, SWPMI |
| Timers | 16 timers: 2× advanced-control, 5× general-purpose 16-bit, 2× low-power 16-bit (active in Stop) |
| Package | LQFP100 (14 × 14 mm), 100-pin, ECOPACK2-compliant |
Pinout & Package
LQFP100 package: 14 × 14 mm body, 0.5 mm pitch, exposed pad (EP), RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Core/SRAM/IO domain inputs; decoupling required per datasheet layout guidelines |
| VDDA, VSSA | Analog power and ground | Independent analog domain supply (1.62–3.6 V); critical for ADC/DAC accuracy |
| VBAT | Backup power input | Supplies RTC and 32×32-bit backup registers during main power loss (300 nA retention) |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 114 pins; most 5 V-tolerant, 14 support independent 1.08–3.6 V IOVDD |
| PC13–PC15 | RTC-related pins | PC13 = RTC_OUT, PC14/PC15 = LSE crystal connections (32.768 kHz) |
| PA9/PA10 | USB OTG FS D+/D− | Dedicated full-speed USB transceiver pins; require 1.5 kΩ pull-up on PA12 for enumeration |
| PB8/PB9 | I²C1_SCL/I²C1_SDA | Fast-mode Plus (1 Mbit/s) interface with SMBus/PMBus support and timeout detection |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 30 nA Shutdown and 420 nA Standby-with-RTC - extends coin-cell life beyond 10 years |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz, reducing dynamic power by ~15% vs non-accelerated execution |
| Dual-supply I/O bank | 14 pins configurable down to 1.08 V IOVDD - enables direct interfacing with ultra-low-voltage sensors |
| Batch Acquisition Mode (BAM) | Allows CPU to sleep while peripherals autonomously acquire sensor data - cuts active time by >60% in periodic sensing |
| Hardware CRC & 96-bit UID | On-the-fly CRC32 computation and factory-programmed unique ID - essential for secure firmware updates |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG and SpO₂ acquisition with Bluetooth LE telemetry and OLED display. IC Role / Device Role / Timing Role: Primary application MCU managing analog front-end, LCD driver, USB charging, and low-power BLE co-processor interface. Use Value: Sub-µA standby with RTC alarm wake-up enables multi-week battery life; integrated op-amps condition analog sensor signals without external amplification. | Use Scenario: Tamper-resistant electricity meter with real-time tariff calculation, LCD readout, and PLC/HPLC communication. IC Role / Device Role / Timing Role: System controller executing metrology algorithms, driving segmented LCD, and managing secure HPLC stack via SAI/USART. Use Value: Hardware crypto acceleration (RNG + CRC) meets IEC 62056-21 security requirements; 125 °C extended temp grade ensures reliability in outdoor enclosures. |
| Portable Industrial HMI | Battery-Powered Environmental Sensor Node |
Use Scenario: Rugged handheld terminal with capacitive touch overlay, 4×44 LCD, and RS-485 fieldbus interface. IC Role / Device Role / Timing Role: Main controller handling TSC-based touch decoding, LCD refresh, and isolated UART-to-CAN gateway logic. Use Value: 24-channel capacitive sensing eliminates mechanical buttons; LCD controller with built-in step-up converter drives high-contrast segments without external boost IC. | Use Scenario: LoRaWAN node measuring temperature, humidity, and CO₂ with 5-year battery life. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating data from I²C sensors, performing oversampled ADC conversions, and scheduling LoRa transmissions. Use Value: 16-bit ADC oversampling (via hardware) achieves 16-bit effective resolution at 125 kSPS - reduces need for external precision ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L432KCU6 | Smaller footprint (48-pin WLCSP), 256 KB flash, no LCD controller, no SMPS support | Suitable for space-constrained sensor nodes without display or external power regulation needs | Select when BOM cost and PCB area are prioritized over display integration and SMPS efficiency |
| STM32L552RET6 | ARM TrustZone®, 512 KB flash, 256 KB SRAM, higher security features, 110 °C rating | Required for applications needing PSA Level 2 certification, secure boot, and encrypted firmware storage | Choose when hardware-enforced isolation and cryptographic acceleration are mandatory for compliance |
Compared with STM32L432KCU6, the STM32L476VCT6 provides LCD control and SMPS support for display-driven devices; versus STM32L552RET6, it trades TrustZone security for lower cost and broader peripheral integration in non-certified industrial use cases.
Availability
STM32L476VCT6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, portable industrial HMIs, and battery-powered environmental sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM32L476VCT6 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 automotive semiconductors.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, extended battery life, and rich analog/mixed-signal integration - especially in portable medical, metering, and IoT edge devices.
FAQ
What is the maximum operating temperature range for STM32L476VCT6?
The STM32L476VCT6 is qualified for industrial operation from -40 °C to +105 °C ambient temperature. This extended range is validated per ST's qualification standards and supports deployment in sealed outdoor enclosures, automotive cabin modules, and industrial control panels without forced cooling.
Does STM32L476VCT6 support external memory interfaces?
Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a Quad SPI interface for high-speed serial flash. These enable expansion of code/data space beyond on-chip limits, commonly used for GUI assets or firmware update storage in HMI applications.
Can the internal SMPS be used with the STM32L476VCT6?
No - the STM32L476VCT6 does not integrate an SMPS regulator. The "ext. SMPS" in its description refers to external SMPS support: VDD12 pin accepts 1.1 V input from an external DC-DC converter to reduce system-level power consumption, achieving 39 µA/MHz run-mode current.
How many independent voltage domains does the analog subsystem use?
The analog subsystem uses three independent voltage domains: VDDA/VSSA for ADC/DAC reference, VREF+ for precise voltage reference, and VOPAMP for op-amp supplies. Each domain must be decoupled separately per Section 6.3.14 of DS10198 Rev 11 to ensure 12-bit linearity and noise immunity.
STM32L476VCT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, PWM, WDT
- Number of I/O:
- 82
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L476VCT6 FAQ
1.How can I place an order for STM32L476VCT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476VCT6 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 STM32L476VCT6 reliable?
The price and inventory of STM32L476VCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476VCT6 is usually 5 days.
3.What payment methods are accepted for STM32L476VCT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476VCT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476VCT6?
STM32L476VCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476VCT6 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 STM32L476VCT6?
For technical support, including STM32L476VCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476VCT6 requirements.
6.How does Aetrix verify that STM32L476VCT6 is sourced from the original manufacturer or authorized distributors?
All STM32L476VCT6 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 STM32L476VCT6 meets industry standards.
7.What is the process for return or replacement of STM32L476VCT6?
All STM32L476VCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476VCT6, 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 STM32L476VCT6 part is unused and in its original packaging.
Return procedure for STM32L476VCT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L476VCT6 Tags
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