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STMicroelectronics STM32L476VGT6
- Part No.:
- STM32L476VGT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L476VGT6.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:18,413
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Product details
Overview
STM32L476VGT6 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, integrated LCD controller, and external SMPS support. It targets battery-powered IoT edge nodes requiring long runtime, real-time sensor fusion, and human-machine interface (e.g., portable medical monitors with touch LCD and RTC-backed data logging).
For engineers reviewing the STM32L476VGT6 datasheet, STM32L476VGT6 pinout, STM32L476VGT6 application, or STM32L476VGT6 equivalent, key selection criteria include its 39 µA/MHz SMPS-enabled run mode, dual 12-bit DACs with sample-and-hold, 3× 12-bit ADCs (5 Msps), 24-channel capacitive sensing, and LQFP100 package compatibility for space-constrained industrial HMI designs.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a memory protection unit (MPU) and interconnect matrix for deterministic peripheral arbitration. Its power architecture supports three voltage scaling modes (VOS0–VOS2) and FlexPowerControl with seven low-power states - including 30 nA Shutdown and 420 nA Standby with RTC - managed via dedicated PWR control registers.
Clock system includes four independent sources: 4–48 MHz HSE, 32 kHz LSE for RTC, 16 MHz HSI (±1%), and MSI auto-trimmed by LSE (±0.25%). Three PLLs generate system, USB, and audio clocks; the USB OTG FS PHY operates without external crystal via internal 48 MHz clock derived from MSI/HSI48.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP tasks like motor control or audio preprocessing in resource-constrained devices. |
| Flash / SRAM | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) - supports secure firmware updates and robust data buffering for logging applications. |
| Power Consumption | 39 µA/MHz in SMPS-run mode @3.3 V - reduces battery drain in always-on sensor gateways versus LDO-based alternatives. |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× op-amps with PGA, 2× comparators - allows simultaneous analog signal acquisition, conditioning, and actuator control without external ICs. |
| Low-Power Modes | 30 nA Shutdown (5 wakeup pins), 420 nA Standby with RTC - sustains calendar time and backup register state for >10 years on a CR2032 coin cell. |
| Package | LQFP100 (14 × 14 mm, 0.5 mm pitch) - provides 82 GPIOs (most 5 V-tolerant) and full peripheral access for prototyping and production PCBs with standard reflow. |
| USB & Connectivity | USB OTG FS (BCD/LPM), CAN 2.0B, 5× USART, 3× SPI, 3× I²C, SDMMC, SWPMI - enables direct connection to PC hosts, automotive networks, and legacy industrial buses. |
Pinout & Package
LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified, with exposed thermal pad for enhanced heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Core logic and I/O domain powered at 1.71–3.6 V; decoupling required per datasheet layout guidelines to maintain noise immunity. |
| VDDA, VSSA | Analog power and ground | Independent analog domain supply ensures clean reference for ADC/DAC/OPAMP operation; must be filtered separately from digital rails. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 82 GPIOs, most 5 V-tolerant; configurable as EXTI, AF, or analog inputs - enables flexible board-level signal routing and legacy interface bridging. |
| PC13–PC15 | RTC oscillator pins | Connect 32.768 kHz crystal for hardware calendar and alarm functions; internal load caps eliminate need for external components. |
| PA11/PA12 | USB DP/DM | Dedicated full-speed USB transceiver pins with internal pull-ups; no external PHY needed for device/host enumeration. |
| PD0/PD1 | OSC_IN/OSC_OUT | 4–48 MHz external crystal input/output for high-accuracy system clock; supports automatic startup and failover to internal oscillators. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Seven low-power modes with sub-µA quiescent current and 4 µs wake-up from Stop - extends battery life in intermittent-sensing applications like smart meters. |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates cache misses during interrupt-driven control loops, improving real-time determinism. |
| Capacitive touch sensing (TSC) | 24-channel hardware-accelerated touch controller supporting touchkey, linear, and rotary sensors - replaces mechanical buttons in medical HMI with waterproof, wear-free UI. |
| LCD controller with step-up converter | Drives 8×40 or 4×44 segment LCDs directly from 3 V supply - eliminates external bias generator in portable diagnostic equipment displays. |
| True random number generator (RNG) | NIST SP800-90B compliant entropy source - enables secure key generation for TLS handshakes in constrained IoT node firmware. |
Applications
| Portable Medical Monitor | Smart Energy Meter |
|---|---|
Use Scenario: Wearable ECG and SpO₂ monitor with OLED/LCD display, Bluetooth LE telemetry, and multi-day battery life. IC Role / Device Role / Timing Role: Main application processor handling sensor acquisition (ADC), signal processing (Cortex-M4+FPU), display driving (LCD controller), and RTC-backed timestamping. Use Value: 39 µA/MHz SMPS efficiency and 420 nA Standby with RTC enable >7-day runtime on 200 mAh Li-ion; integrated op-amps condition analog front-end signals without external gain stages. | Use Scenario: DIN-rail mounted electricity meter with tamper detection, PLC communication, and local LCD readout. IC Role / Device Role / Timing Role: System controller managing metrology ADC sampling, tariff calculation, secure storage, and LCD refresh synchronized to mains frequency via timer input capture. Use Value: Dual 12-bit DACs generate precise calibration references for metrology ADC; CAN 2.0B interface connects to utility backhaul networks; 128 KB SRAM buffers 30 days of consumption logs. |
| Industrial HMI Panel | Wireless Sensor Node Gateway |
Use Scenario: Factory-floor operator panel with resistive/capacitive touchscreen, serial fieldbus interfaces, and local data visualization. IC Role / Device Role / Timing Role: Human-machine interface controller running FreeRTOS, driving 4×44 LCD, scanning 24 TSC channels, and bridging Modbus RTU over USART to PLCs. Use Value: Integrated TSC eliminates external touch controller IC; 82 GPIOs support parallel bus expansion for custom peripherals; USB OTG FS enables field firmware updates via thumb drive. | Use Scenario: Battery-powered gateway aggregating LoRaWAN/Zigbee sensor data, performing edge analytics, and forwarding via cellular or Ethernet. IC Role / Device Role / Timing Role: Edge compute node executing lightweight ML inference (CMSIS-NN), managing multiple radio stacks, and maintaining secure TLS sessions with cloud backend. Use Value: ART Accelerator enables 80 MHz deterministic inference latency; 1 MB flash stores dual OTA images; true RNG seeds TLS handshake keys for end-to-end encryption. |
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 | 64-pin UFBGA, 256 KB flash, no LCD controller, no TSC, single ADC (2.4 Msps) | Suitable for compact sensor nodes without display or touch interface | Select when footprint and BOM cost are critical, and LCD/TSC are unnecessary. |
| STM32L552RET6 | ARM TrustZone®, 512 KB flash, 256 KB SRAM, 110 µA/MHz run, no LCD/TSC | Targeted at security-critical applications requiring secure boot and encrypted firmware storage | Choose when hardware-enforced isolation and cryptographic acceleration are mandatory. |
Compared with STM32L432KCU6, the STM32L476VGT6 adds LCD/TSC/analog integration for HMI-centric designs; versus STM32L552RET6, it trades security extensions for lower power and richer analog peripherals - making it optimal for cost-sensitive, display-equipped industrial edge devices.
Availability
STM32L476VGT6 is available at Aetrix Electronics and suitable for portable medical monitors, smart energy meters, industrial HMI panels, and wireless sensor node gateways requiring stable component supply across multi-year production cycles.
Supply support for STM32L476VGT6 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 products for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and real-time performance - optimized for IoT endpoints, wearable health devices, and smart infrastructure controllers.
FAQ
What is the maximum operating temperature range for STM32L476VGT6?
The STM32L476VGT6 is rated for operation from –40 °C to +105 °C (industrial grade), validated per datasheet Table 4 and electrical characteristics Section 6.3.1. This range supports deployment in enclosed industrial enclosures or automotive cabin environments without active cooling.
Does STM32L476VGT6 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 are accessible via dedicated address/data bus pins on LQFP100 and documented in Sections 3.35–3.36 of DS10198 Rev 11.
Can the internal SMPS be used with the STM32L476VGT6?
No - the STM32L476VGT6 supports external SMPS (switched-mode power supply) via VDD12 pin for improved efficiency, but does not integrate an on-die SMPS. The device requires an external DC-DC converter (e.g., ST's STLQ015) connected to VDD12 to achieve 39 µA/MHz operation.
How many independent ADC instances does STM32L476VGT6 provide?
It integrates three independent 12-bit ADCs (ADC1, ADC2, ADC3), each capable of 5 Msps sampling rate with hardware oversampling up to 16-bit resolution. They share common calibration and can operate concurrently or in interleaved mode, as specified in Section 3.15 of the datasheet.
STM32L476VGT6 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:
- 1MB (1M 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:
STM32L476VGT6 FAQ
1.How can I place an order for STM32L476VGT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476VGT6 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 STM32L476VGT6 reliable?
The price and inventory of STM32L476VGT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476VGT6 is usually 5 days.
3.What payment methods are accepted for STM32L476VGT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476VGT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476VGT6?
STM32L476VGT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476VGT6 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 STM32L476VGT6?
For technical support, including STM32L476VGT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476VGT6 requirements.
6.How does Aetrix verify that STM32L476VGT6 is sourced from the original manufacturer or authorized distributors?
All STM32L476VGT6 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 STM32L476VGT6 meets industry standards.
7.What is the process for return or replacement of STM32L476VGT6?
All STM32L476VGT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476VGT6, 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 STM32L476VGT6 part is unused and in its original packaging.
Return procedure for STM32L476VGT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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