STMicroelectronics STM32L471VGT3

Overview

STM32L471VGT3 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 80 MHz max frequency, 1 MB Flash, 128 KB SRAM, and integrated analog peripherals including three 12-bit ADCs (5 Msps), two 12-bit DACs, two op-amps, and two ultra-low-power comparators - deployed in battery-powered industrial sensors and portable medical monitors.

For engineers reviewing the STM32L471VGT3 datasheet, STM32L471VGT3 pinout, STM32L471VGT3 application, or STM32L471VGT3 equivalent, key selection criteria include its 30 nA shutdown current, 4 µs wakeup from Stop mode, dual-bank read-while-write Flash, and LQFP100 package compatibility with legacy STM32L4 designs.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) 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 five low-power modes - Shutdown (30 nA), Standby (120 nA), Stop 2 (420 nA with RTC), and Run (100 µA/MHz) - managed via hardware-controlled voltage scaling and BOR.

Clock system includes three PLLs (system/audio/ADC), four oscillator sources (HSE/LSE/HSI16/MSI), and auto-trimming of the MSI by LSE for ±0.25% accuracy. Analog subsystem features independent supply domains, hardware oversampling up to 16-bit resolution on ADCs, and built-in PGA in operational amplifiers.

Key Specifications

Pinout & Package

LQFP100 package: 14 × 14 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant, ECOPACK2® certified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L433RCT6, the STM32L471VGT3 delivers double Flash/SRAM and enhanced analog/peripheral density for feature-rich edge nodes; versus STM32L552VET6, it prioritizes ultra-low-power efficiency and cost over hardware security, making it optimal for battery-constrained industrial sensing where PSA-level isolation is unnecessary.

Availability

STM32L471VGT3 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial wireless sensor nodes, and portable diagnostic devices requiring stable component supply across multi-year production cycles.

Supply support for STM32L471VGT3 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components 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 edge nodes, portable medical devices, and energy-harvesting systems.

FAQ

What is the maximum operating temperature range for STM32L471VGT3?

The STM32L471VGT3 is qualified for industrial operation from –40 °C to +85 °C. It also supports extended temperature grades up to +105 °C and +125 °C in other variants (e.g., STM32L471ZGT6), but the VGT3 suffix specifically denotes the 85 °C grade per ST's ordering code documentation and DS10741 Rev 3 Table 4.

Does STM32L471VGT3 support external memory interfaces?

Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a dedicated Quad-SPI interface for high-speed serial flash or RAM. Both interfaces are accessible in the LQFP100 package, with specific pin allocations documented in Section 4 (Pinouts) of DS10741 Rev 3.

How many ADC channels does STM32L471VGT3 support, and what is their resolution?

The device integrates three independent 12-bit ADCs, each supporting up to 16 channels with hardware oversampling to achieve up to 16-bit effective resolution. Maximum sampling rate is 5 Msps per ADC, with 200 µA/Msps typical current consumption - confirmed in Section 6.3.18 of DS10741 Rev 3.

Is STM32L471VGT3 pin-compatible with other STM32L4 series MCUs?

No - while sharing the same LQFP100 footprint, pin functions differ significantly across the L4 family due to varying peripheral sets and routing constraints. For example, SAI and Quad-SPI signals on STM32L471VGT3 occupy pins assigned to additional USARTs or timers on STM32L433RCT6. Always verify pin definitions using Table 16 in DS10741 Rev 3 before migration.