STMicroelectronics STM32L462VEI6

Overview

STM32L462VEI6 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, 160 KB SRAM, and integrated analog peripherals including 12-bit ADC (5 Msps), dual 12-bit DAC, op-amp with PGA, and AES-128/256 hardware accelerator. It supports USB 2.0 full-speed (crystal-less), SAI audio interface, CAN 2.0B, and LPUART for battery-powered sensor hubs and portable medical devices.

For engineers reviewing the STM32L462VEI6 datasheet, STM32L462VEI6 pinout, STM32L462VEI6 application, or STM32L462VEI6 equivalent, key selection criteria include its 375 nA Standby-with-RTC current, 4 µs Stop-mode wakeup, 2.05 µA Stop 2 mode, 145 nA VBAT mode, and UFBGA100 (7×7 mm) package compatibility with high-pin-count low-power system designs.

Technical Context

The STM32L462VEI6 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 includes five low-power modes-Shutdown (22 nA), Standby (106 nA), Standby+RTC (375 nA), Stop 2 (2.05 µA), and Run (84 µA/MHz)-managed by a dedicated power control block with BOR and voltage scaling.

It features dual PLLs (system and audio), clock recovery system (CRS) for USB crystal-less operation, and independent analog supply domain supporting simultaneous 12-bit ADC (5 Msps, hardware oversampling to 16-bit) and dual DAC outputs with sample-and-hold. The device includes 83 fast I/Os (most 5 V-tolerant), 21 capacitive sensing channels, and true random number generator (TRNG) for secure boot.

Key Specifications

Pinout & Package

STM32L462VEI6 is housed in a 100-ball Ultra-Fine Pitch Ball Grid Array (UFBGA100) package measuring 7 mm × 7 mm with 0.5 mm ball pitch, optimized for space-constrained ultra-low-power applications requiring high I/O count and thermal efficiency.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476VGT6 and STM32L552VET6, the STM32L462VEI6 uniquely balances ultra-low-power analog integration (ADC+DAC+op-amp+SAI) with cryptographic acceleration and USB crystal-less operation-making it optimal for compact, battery-powered audio-sensing and medical diagnostic endpoints where component count and energy per inference matter most.

Availability

STM32L462VEI6 is available at Aetrix Electronics and suitable for wearable health monitors, smart gas sensor nodes, portable medical infusion pumps, and industrial predictive maintenance edge nodes requiring stable component supply across multi-year production cycles.

Supply support for STM32L462VEI6 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 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 secure firmware execution-optimized for IoT endpoints, portable medical devices, and energy-harvesting systems.

FAQ

What is the maximum operating frequency and core type of the STM32L462VEI6?

The STM32L462VEI6 features an Arm Cortex-M4 core with floating-point unit (FPU), capable of running at up to 80 MHz. It delivers 100 DMIPS performance and supports DSP instructions. The Adaptive Real-time Accelerator (ART Accelerator™) enables zero-wait-state execution from Flash memory, ensuring deterministic timing for real-time tasks without external cache.

Does the STM32L462VEI6 support crystal-less USB operation?

Yes, the STM32L462VEI6 integrates a clock recovery system (CRS) that synchronizes the internal 48 MHz HSI48 oscillator to the USB SOF signal, enabling full-speed (12 Mbit/s) USB 2.0 communication without an external crystal. This reduces BOM cost and PCB area while maintaining ±0.25% accuracy required for USB specification compliance.

What low-power modes are available, and what are their typical current draws?

The STM32L462VEI6 offers six low-power modes: Shutdown (22 nA), Standby (106 nA), Standby with RTC (375 nA), Stop 0 (1.28 µA), Stop 1 (1.52 µA), and Stop 2 (2.05 µA). All Stop modes retain SRAM and register content; Stop 2 additionally keeps the RTC and LSE running. Wakeup latency ranges from 4 µs (Stop) to 15 µs (Standby), verified per DS11913 Rev 5 Section 6.3.6.

Which analog peripherals are integrated, and what are their key specifications?

The device integrates a 12-bit ADC with 5 Msps sampling rate (200 µA/Msps), hardware oversampling up to 16-bit resolution, two 12-bit DAC channels with sample-and-hold, one operational amplifier with programmable gain amplifier (PGA), two ultra-low-power comparators, and a buffered 2.5 V/2.048 V reference voltage output-all operating from an independent analog supply (VDDA) for noise immunity and precision.