STMicroelectronics STM32L462VET6

Overview

STM32L462VET6 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 DACs, op-amp with PGA, and hardware AES-128/256 encryption. It targets battery-powered IoT sensor nodes requiring RTC calendar, capacitive touch sensing, and USB/LPUART wake-up in Stop 2 mode.

For engineers reviewing the STM32L462VET6 datasheet, STM32L462VET6 pinout, STM32L462VET6 application, or STM32L462VET6 equivalent, key selection criteria include VBAT mode current (145 nA), Stop 2 mode consumption (375 nA with RTC), 83 I/Os (most 5 V-tolerant), UFBGA100 package footprint, and support for batch acquisition mode (BAM) in low-power audio streaming.

Technical Context

The STM32L462VET6 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 seven low-power modes-including Shutdown (22 nA), Standby (106 nA), and Stop 2 (375 nA with RTC)-with sub-4 µs wakeup latency.

Clock system includes dual PLLs (system/audio), auto-trimmed MSI (±0.25%), HSE (4–48 MHz), LSE (32.768 kHz), and HSI48 for crystal-less USB. Analog subsystem features independent supply domains, 200 µA/Msps ADC efficiency, and buffered 2.048 V/2.5 V reference voltage outputs.

Key Specifications

Pinout & Package

STM32L462VET6 is housed in a 100-pin Ultra-Fine-Pitch Ball Grid Array (UFBGA100) package with 0.5 mm ball pitch and 7 mm × 7 mm body size, optimized for space-constrained portable and industrial applications. Pin functions are validated per STMicroelectronics DS11913 Rev 5, Section 4 ("Pinouts and pin description").

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476VGT6, the STM32L462VET6 delivers superior ultra-low-power performance in Stop 2 mode (375 nA vs. 550 nA) and includes SAI for audio, while STM32L552VET6 trades analog/audio capability for hardware-enforced security isolation-making the L462 the optimal balance for cost-sensitive, battery-operated sensor hubs with audio or fieldbus requirements.

Availability

STM32L462VET6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensor hubs, industrial predictive maintenance nodes, and audio-enabled smart home controllers requiring stable component supply across long-lifecycle deployments.

Supply support for STM32L462VET6 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, MEMS sensors, and automotive-grade components since 1987.

The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and robust security-designed specifically for IoT endpoints, wearable health monitors, and energy-efficient industrial controllers.

FAQ

What is the maximum operating temperature range for STM32L462VET6?

The STM32L462VET6 is qualified for industrial and extended temperature operation from –40 °C to +125 °C, verified per JEDEC JESD22-A108 and supported by thermal characterization data in DS11913 Rev 5 Section 7.8. This rating applies to all UFBGA100 variants and enables deployment in harsh environments such as motor control enclosures or outdoor utility meters.

Does STM32L462VET6 support crystal-less USB operation?

Yes-STM32L462VET6 integrates an HSI48 oscillator with Clock Recovery System (CRS) that achieves ±0.25% accuracy over voltage and temperature, enabling full-speed USB 2.0 communication without an external 48 MHz crystal. This is confirmed in Section 3.11 and Table 50 of DS11913 Rev 5, reducing BOM count and PCB layout complexity.

How many capacitive sensing channels does STM32L462VET6 support?

The device supports up to 21 capacitive sensing channels via its integrated Touch Sensing Controller (TSC), as specified in Section 3.20 and Table 1 of DS11913 Rev 5. These channels support touchkey, linear, and rotary sensor configurations with built-in charge transfer, spread spectrum, and noise filtering-requiring no external components beyond electrodes.

Is the 512 KB Flash memory single-bank or dual-bank?

The Flash is organized as a single bank of 512 KB, as stated in Section 3.4 and Table 1 of DS11913 Rev 5. This configuration supports read-while-write (RWW) only in specific conditions (e.g., using system memory loader), unlike dual-bank variants (e.g., STM32L4x6) which allow true concurrent execute-and-program operations.