STM32L476VET6 ST Mainstream Arm Cortex-M4 Ultra-Low-Power 32-bit MCU 512KB Flash 128KB SRAM USB CAN OpAmp DAC SAI Touch LQFP-100

STM32L476VET6 Product Overview

STM32L476VET6 is an Arm Cortex-M4 MCU at 80 MHz with FPU and ART Accelerator, LQFP-100. 512 KB Dual-Bank Flash, 128 KB SRAM, USB OTG FS (crystal-less), CAN 2.0B, two 12-bit ADCs (5 Msps, 16 ch), two 12-bit DACs, two op-amps (8 MHz GBW), two comparators, capacitive touch sensing (TSC), true random number generator (TRNG), 2×SAI audio interfaces, SDMMC (4-bit), LP timers, RTC, 3×USART, 1×UART, 1×LPUART, 2×SPI/I2S, 3×I2C. Up to 83 x 5 V-tolerant I/Os. 1.71–3.6 V, -40–85 °C. Compared to the 64-pin STM32L476RET6, the 100-pin STM32L476VET6 offers more I/Os, making it a more powerful ultra-low-power platform for battery-powered IoT gateways, industrial bus nodes, and portable instruments needing extensive pin connectivity, USB, CAN, and complete analog and audio features.

STM32L476VET6 Core Features

Core: The STM32L476VET6 features an Arm Cortex-M4 core at 80 MHz, with FPU + ART Accelerator + MPU

Memory: The STM32L476VET6 provides 512 KB Dual-Bank Flash (RWW), 128 KB SRAM

USB & CAN: The STM32L476VET6 integrates a USB OTG FS (Crystal-less) and CAN 2.0B

Analog: 2×12-bit ADCs (5 Msps, 16 ch), 2×12-bit DACs, 2×Op-Amps (PGA), 2×Comparators

Audio & Storage: 2×SAI audio interfaces, SDMMC (4-bit)

Capacitive Touch: The STM32L476VET6 features Capacitive Touch Sensing (TSC)

Connectivity: 3×USART, 1×UART, 1×LPUART, 2×SPI/I2S, 3×I2C

Security: True Random Number Generator (TRNG)

Timers: 2×Advanced Motor Control Timers, multiple GP/LP timers, RTC

I/Os: 83 (5 V-tolerant)

Package: LQFP-100

Temperature Range: -40°C to 85°C

STM32L476VET6 Applications

IoT & Industrial Bus Nodes: CAN bus sensors and USB data acquisition modules can leverage the STM32L476VET6's connectivity options

Battery-Powered Sensors: The STM32L476VET6 is ideal for wireless sensors needing analog signal conditioning and high-precision acquisition

Portable Devices: Wearables, portable medical devices, and USB peripherals benefit from the STM32L476VET6's low power consumption

Industrial Metering: Water, gas, and electricity meters are perfect applications for the STM32L476VET6

Audio & Consumer Electronics: The STM32L476VET6 supports digital audio interfaces, advanced remote controls, and smart cards

Motor Control: Dual-motor FOC and servo drives can rely on the STM32L476VET6's advanced timers

STM32L476VET6 Key Advantages

512 KB Dual-Bank Flash + 128 KB SRAM: The STM32L476VET6 provides large storage that supports safe firmware updates and complex applications

USB + CAN + Ultra-Low Power: The STM32L476VET6 features crystal-less USB and industrial CAN bus for flexible communication

On-Chip Op-Amps + Dual DACs + Dual Comparators: The STM32L476VET6 delivers powerful analog signal conditioning and output, saving external analog components

SAI Audio + SDMMC: Flexible audio interface and external storage expansion

83 I/Os in LQFP-100 Package: Rich pin resources for peripheral-intensive systems

Cortex-M4 + FPU + Ultra-Low Power: Excellent DSP and floating-point performance while maintaining extremely low power consumption

5 V-tolerant I/Os: Enhanced system noise immunity, simplified external level-shifting circuitry

Full Ecosystem Compatibility: Easy development with STM32CubeIDE/HAL/LL libraries for the STM32L476VET6

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FAQ

1. What is STM32L476VET6?
STM32L476VET6 is an ultra-low-power 32-bit MCU from STMicroelectronics' STM32L4 series, built around an Arm® Cortex®-M4 core with FPU and DSP instructions in an LQFP-100 package. Operating at 80 MHz, the STM32L476VET6 offers 512 KB Flash and 128 KB SRAM, making it ideal for industrial, medical, and IoT applications that demand energy efficiency and rich analog/digital peripherals.

2. What are the key specifications of STM32L476VET6?

• Core: Arm® Cortex®-M4, up to 80 MHz, 100 DMIPS with FPU and DSP

• Memory: 512 KB Flash, 128 KB SRAM

• Operating Voltage: 1.71 V to 3.6 V

• Temperature Range: -40 °C to +85 °C (industrial grade)

• I/O Count: up to 82

• Package: LQFP-100 (14 mm × 14 mm)

3. What package does STM32L476VET6 use and is it easy to solder?
The STM32L476VET6 comes in an LQFP-100 package measuring 14 mm × 14 mm with exposed 0.5 mm pitch leads. It can be drag-soldered with a standard soldering iron—no hot-air station required—making the STM32L476VET6 very friendly for prototyping, small-batch hand assembly, and rework.

4. What applications is STM32L476VET6 suitable for?
Thanks to its integrated segment LCD driver and abundant low-power peripherals, the STM32L476VET6 is widely used in battery-powered devices requiring a segment display, such as smart water and gas meters, thermostats, handheld medical instruments, industrial sensor nodes, and various portable IoT endpoints.

5. What development tools support STM32L476VET6?
ST provides free STM32CubeMX for graphical configuration and STM32CubeIDE as an integrated development environment for the STM32L476VET6, along with the STM32CubeL4 firmware library. Debugging and programming are handled by ST-Link debuggers. For rapid prototyping, boards like the NUCLEO-L476RG can be used.

6. What is the power consumption of the STM32L476VET6 across its low-power modes?

• Temperature Range: -40 °C to +85 °C

• Ultra-low-power modes of the STM32L476VET6:

  • Shutdown mode: ~33 nA (5 wake-up pins)

  • Standby mode: ~125 nA (5 wake-up pins), ~430 nA with RTC

  • Stop 2 mode: ~1.2 µA, ~1.4 µA with RTC

  • Run mode: ~100 µA/MHz (LDO mode)

7. What can the segment LCD driver on STM32L476VET6 do?
The STM32L476VET6 integrates an LCD controller capable of driving up to 8 common and 44 segment lines (8×44), directly connecting to a segment LCD without external driver chips. The display can keep refreshing even when the STM32L476VET6 is in Stop 2 mode, using an internal voltage converter and independent clock—perfect for always-on battery-powered displays.

8. What key peripheral interfaces does STM32L476VET6 offer?

• Communication: CAN 2.0B, I²C, SPI, UART/USART, USB OTG FS, SAI (I2S/PCM/PDM)

• Analog: 12-bit 5 Msps ADC, 12-bit DAC, ultra-low-power comparators

• Timers: 16-bit and 32-bit general-purpose timers, advanced motor-control timer

• Others: Quad SPI interface, SDMMC interface, segment LCD driver

9. What is the difference between STM32L476VET6 and STM32L476VGT6?
Both share the same LQFP-100 package, pinout, core, and peripherals. The only difference is Flash size: the STM32L476VET6 has 512 KB while the VGT6 has 1 MB. If your application fits within 512 KB, the STM32L476VET6 is a more cost-effective choice; otherwise, VGT6 provides extra headroom for larger firmware or future expansion.

10. How does STM32L476VET6 differ from STM32L496VET6?
Both are 80 MHz Cortex-M4 devices from the L4 family. The STM32L476VET6 includes a segment LCD driver and CAN interface, making it better suited for segment-display and industrial bus applications. The L496VET6 typically omits the segment LCD driver but may offer a Chrom-ART graphics accelerator and camera interface, targeting TFT display and image processing. Choose based on whether you need segment LCD/CAN or graphics acceleration.