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STMicroelectronics STM32L476VGT6TR
- Part No.:
- STM32L476VGT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L476VGT6TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,877
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Product details
Overview
STM32L476VGT6TR 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 targets battery-powered IoT edge nodes, portable medical devices, and energy-harvesting sensor hubs requiring sub-µA standby operation and rich analog integration.
For engineers reviewing the STM32L476VGT6TR datasheet, STM32L476VGT6TR pinout, STM32L476VGT6TR application, or STM32L476VGT6TR equivalent, key selection criteria include its 30 nA shutdown current, dual 12-bit DACs with sample-and-hold, 3× 12-bit ADCs (5 Msps), 24-channel capacitive touch 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 dual supply schemes: internal LDO or external SMPS (reducing run-mode current to 39 µA/MHz @ 3.3 V).
Clock system includes three PLLs (system/USB/audio), multiple oscillators (4–48 MHz HSE, 32 kHz LSE, auto-trimmed MSI), and hardware calendar RTC with calibration. Analog subsystem features two rail-to-rail op-amps with programmable gain, two ultra-low-power comparators, and DFSDM digital filters for sigma-delta modulator interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP and control algorithms in resource-constrained systems. |
| Memory | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) - supports secure firmware updates and robust data logging. |
| Power Consumption | 30 nA shutdown mode (5 wakeup pins), 420 nA standby with RTC - extends battery life to years in intermittent-sensing applications. |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× op-amps, 2× comparators - enables closed-loop analog signal conditioning without external components. |
| Connectivity | USB OTG FS, CAN 2.0B, 5× USART, 3× I²C, 3× SPI, SAI, SDMMC - supports wired/wireless gateway functions and multi-sensor aggregation. |
| Package | LQFP100 (14 × 14 mm), ECOPACK2-compliant - provides 82 user I/Os (most 5 V-tolerant) and thermal reliability for industrial PCB layouts. |
| Operating Range | −40 °C to +105 °C, 1.71–3.6 V supply - qualified for extended-temperature industrial and automotive cabin applications. |
Pinout & Package
LQFP100 package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; 100-pin square-outline leaded package suitable for reflow assembly and manual inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power and ground | Supports dual-supply configuration: VDD powers core/peripherals; separate VDDA/VSSA for analog domain isolation. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 82 GPIOs total; most 5 V-tolerant, configurable as EXTI sources or alternate function channels (e.g., USART1_TX on PA9). |
| PC13–PC15 | RTC-related signals | PC13 = RTC_OUT, PC14/PC15 = 32.768 kHz crystal inputs - dedicated low-leakage pins for battery-backed RTC operation. |
| PA11/PA12 | USB OTG FS D+/D− | Full-speed USB transceiver with integrated pull-ups - eliminates external PHY and reduces BOM cost for embedded USB device implementations. |
| VREF+ / VREF− | Analog reference inputs | Enable precise ADC/DAC referencing independent of VDD; VREF+ accepts 1.2–3.6 V external reference voltage. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | 7 low-power modes (Shutdown/Stop2/Standby w/RTC) with sub-µA quiescent currents - enables energy harvesting and coin-cell operation. |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates performance penalty of internal flash latency in real-time control loops. |
| Capacitive Touch Sensing (TSC) | 24-channel hardware-accelerated touch controller - supports up to 4×44 button matrix or rotary sliders without CPU overhead. |
| LCD Controller | 8×40 or 4×44 segment drive with integrated step-up converter - drives monochrome segment LCDs directly from single 3.3 V supply. |
| True Random Number Generator (RNG) | NIST SP800-90B compliant entropy source - provides cryptographically secure keys for TLS handshake and secure boot in IoT endpoints. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with Bluetooth LE telemetry and rechargeable battery management. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion, real-time heart-rate calculation, and USB/Bluetooth protocol stack; RTC maintains time-of-event stamping. Use Value: 30 nA shutdown current extends 2-week battery life; integrated op-amps condition analog biosignals; 128 KB SRAM buffers waveform data pre-transmission. | Use Scenario: Tamper-resistant electricity meter with metrology ASIC interface, LCD display, and PLC/GPRS communication. IC Role / Device Role / Timing Role: System controller managing pulse counting, tariff switching, LCD refresh, and secure firmware updates via encrypted bootloader. Use Value: Dual-bank flash enables safe over-the-air updates; 1.71–3.6 V operation accommodates wide input from supercapacitor backup; CAN interface links to concentrator nodes. |
| Industrial HMI Panel | Wireless Sensor Node |
Use Scenario: Local operator interface for pump controllers with touch buttons, segmented LCD, and Modbus RTU connectivity. IC Role / Device Role / Timing Role: Human-machine interface processor driving 4×44 LCD segments, scanning 16 capacitive touch keys, and handling serial protocol translation. Use Value: Integrated LCD controller eliminates external driver IC; TSC hardware reduces CPU load by >90%; 5 V-tolerant GPIOs simplify connection to legacy 5 V logic. | Use Scenario: Battery-powered environmental node measuring temperature/humidity/pressure with LoRaWAN uplink and local data logging. IC Role / Device Role / Timing Role: Data aggregator sampling sensors via ADC/DAC, compressing readings, and scheduling low-duty-cycle radio transmissions using LPTIM wakeups. Use Value: 420 nA standby with RTC allows 10-year shelf life on CR2032; DFSDM filters sigma-delta pressure sensor output; Quad-SPI interfaces external FRAM for non-volatile logging. |
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 KB flash, 16 KB SRAM, no LCD/TSC, LQFP32 package | Targeted at compact, cost-sensitive USB-C PD controllers or simple sensor nodes without display/touch | Select when footprint and BOM cost are critical and analog/touch/LCD features are unnecessary. |
| STM32L562VEY6TR | ARM TrustZone®, 512 KB flash, 256 KB SRAM, 110 µA/MHz (SMPS), -40 to +85 °C | Designed for secure firmware execution and PSA-certified IoT endpoints requiring cryptographic acceleration | Select when hardware-based security isolation and AES/SHA accelerators are mandatory for cloud-connected devices. |
Compared with STM32L432KCU6, the STM32L476VGT6TR delivers 16× more flash and full touch/LCD capability but occupies larger PCB area; versus STM32L562VEY6TR, it trades TrustZone security for lower cost and extended temperature range, making it preferable for industrial HMIs where physical security suffices.
Availability
STM32L476VGT6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial HMI panels, and wireless sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM32L476VGT6TR 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 high performance-per-milliwatt, combining Cortex-M4 processing with advanced power gating, analog integration, and flexible clocking for battery-operated and energy-harvesting systems.
FAQ
What is the maximum operating frequency and associated performance metric?
The STM32L476VGT6TR operates at up to 80 MHz, delivering 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance level is sustained with zero-wait-state execution from flash memory thanks to the ART Accelerator™, enabling deterministic real-time response in motor control and audio processing tasks.
Does this MCU support external memory expansion, and what interfaces are available?
Yes, it supports external memory via Flexible Static Memory Controller (FSMC) for SRAM, PSRAM, NOR, and NAND memories, plus a dedicated Quad-SPI interface for high-speed serial flash or FRAM. The FSMC provides asynchronous/synchronous access with programmable timing, while Quad-SPI achieves up to 80 MHz clock rates with double-data-rate capability for efficient code XIP or data streaming.
How does the power management architecture reduce energy consumption in battery-powered use cases?
It implements seven low-power modes including Shutdown (30 nA), Stop2 (1.1 µA with RTC), and Standby with RTC (420 nA). The FlexPowerControl system enables dynamic voltage scaling, SMPS integration (cutting run-mode current to 39 µA/MHz), and batch acquisition mode (BAM) that pauses CPU during peripheral data capture-extending coin-cell battery life to over five years in periodic-sensing applications.
What development tools and debug interfaces are supported?
It supports Serial Wire Debug (SWD) and JTAG via SWJ-DP, with Embedded Trace Macrocell™ (ETM) for instruction-level tracing. ST's STM32CubeMX configures peripherals and generates initialization code, while STM32CubeIDE provides GCC-based compilation, flash programming, and real-time variable monitoring-enabling rapid prototyping on Nucleo-L476RG and custom carrier boards.
STM32L476VGT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L4
- Packaging:
- Tape & Reel (TR)
- 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:
STM32L476VGT6TR FAQ
1.How can I place an order for STM32L476VGT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476VGT6TR 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 STM32L476VGT6TR reliable?
The price and inventory of STM32L476VGT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476VGT6TR is usually 5 days.
3.What payment methods are accepted for STM32L476VGT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476VGT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476VGT6TR?
STM32L476VGT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476VGT6TR 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 STM32L476VGT6TR?
For technical support, including STM32L476VGT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476VGT6TR requirements.
6.How does Aetrix verify that STM32L476VGT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L476VGT6TR 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 STM32L476VGT6TR meets industry standards.
7.What is the process for return or replacement of STM32L476VGT6TR?
All STM32L476VGT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476VGT6TR, 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 STM32L476VGT6TR part is unused and in its original packaging.
Return procedure for STM32L476VGT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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