STMicroelectronics STM32L471VET6TR

Overview

STM32L471VET6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 512 KB Flash, 128 KB SRAM, and integrated analog peripherals including dual 12-bit DACs, triple 12-bit ADCs, two op-amps, and two ultra-low-power comparators. It supports CAN 2.0B, dual SAI audio interfaces, and operates across -40 °C to 105 °C in LQFP100 package - deployed in battery-powered industrial sensors and portable medical monitors.

For engineers reviewing the STM32L471VET6TR datasheet, STM32L471VET6TR pinout, STM32L471VET6TR application, or STM32L471VET6TR equivalent, key selection criteria include verified 420 nA Standby-with-RTC current, 1.1 µA/MHz run-mode efficiency, dual independent VDDIO supply capability (down to 1.08 V), and hardware parity on 32 KB SRAM for functional safety-critical firmware.

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 FlexPowerControl architecture delivers granular low-power mode control - including Stop 2 (1.4 µA with RTC), Shutdown (30 nA), and VBAT mode (300 nA) - all with sub-4 µs wake-up latency.

Clock system includes three PLLs (system, audio, ADC), auto-trimmed MSI oscillator (±0.25%), and dual crystal support (4–48 MHz HSE + 32.768 kHz LSE). Analog subsystem features independent power domains, hardware oversampling (up to 16-bit ADC), and sigma-delta digital filters (DFSDM) for precision sensor signal conditioning.

Key Specifications

Pinout & Package

LQFP100 package with 100-pin quad flat pack, 0.5 mm pitch, exposed thermal pad (EP), RoHS-compliant and ECOPACK2® certified. Pinout validated per DS10741 Rev 3 Section 4 (Pinouts and pin description) and Table 16 (STM32L471xx pin definitions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power Cortex-M4 MCU applications.

Compared with STM32L471VET6TR, STM32L432KCU6 sacrifices peripheral richness and memory for size/cost, while STM32L552RET6 trades analog subsystem depth (no DFSDM, fewer op-amps) for hardware security - making the L471 optimal for analog-intensive, battery-operated industrial devices needing CAN and audio.

Availability

STM32L471VET6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32L471VET6TR 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 chips for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, rich analog integration, and robust security - optimized for battery-powered and energy-harvesting systems where runtime and feature density are critical.

FAQ

What is the maximum operating temperature range for STM32L471VET6TR?

The STM32L471VET6TR is qualified for operation from –40 °C to +105 °C ambient temperature, as specified in Section 6.3.1 of DS10741 Rev 3. This extended industrial grade rating enables deployment in enclosed enclosures, outdoor metering housings, and under-hood automotive environments without derating.

Does STM32L471VET6TR support hardware encryption accelerators?

No - the STM32L471VET6TR does not integrate AES, PKA, or HASH accelerators. It provides a true random number generator (RNG) and CRC calculation unit, but cryptographic operations must be implemented in software or via external secure elements. For hardware crypto, consider the STM32L5 or STM32U5 series.

Can the internal op-amps drive capacitive touch sensors directly?

Yes - the two integrated operational amplifiers support programmable gain (PGA) and can condition signals from self- or mutual-capacitance touch sensors. They interface directly with the Touch Sensing Controller (TSC) and are validated for linear/rotary sliders and touchkeys per AN4990 and RM0351 reference manual sections.

Is the LQFP100 package of STM32L471VET6TR lead-free and RoHS-compliant?

Yes - the LQFP100 package is ECOPACK2® certified, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead-free matte tin finish is applied to all terminations, and the device complies with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for surface-mount assembly.