STMicroelectronics STM32L562VET6

Overview

STM32L562VET6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M33 32-bit microcontroller with TrustZone® security, FPU, and SMPS support. It delivers 165 DMIPS at up to 110 MHz, integrates 512 KB Flash (dual-bank read-while-write), 256 KB SRAM (64 KB with hardware parity), and operates from 1.71 V to 3.6 V across –40°C to +85°C. It targets secure, battery-powered edge nodes such as industrial wireless sensors and medical wearables requiring cryptographic acceleration and sub-μA standby operation.

For engineers reviewing the STM32L562VET6 datasheet, STM32L562VET6 pinout, STM32L562VET6 application, or STM32L562VET6 equivalent, key selection criteria include TrustZone-enabled secure boot, 222 nA Standby mode with RTC, AES+PKA coprocessors, Octo-SPI on-the-fly decryption, and LQFP100 package compatibility for high peripheral count designs.

Technical Context

The STM32L562VET6 implements a dual-domain Arm Cortex-M33 core with separate Secure/Non-secure states enforced by TrustZone®, MPU, and GTZC peripherals. Its power architecture combines an integrated SMPS step-down converter (62 μA/MHz @ 3 V) and LDO regulator, enabling dynamic voltage scaling across seven low-power modes including Stop 2 (3.16 μA with RTC) and Shutdown (17 nA).

Peripherals are partitioned via TZSC and SAU to enforce memory/peripheral isolation. Security features include Root of Trust with HDP, SFI via embedded RSS, TF-M–compatible firmware upgrade, active tamper detection, NIST SP800-90B–compliant RNG, and 96-bit unique ID - all validated in production-grade silicon per DS12736 Rev 5.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 114 fast I/Os - 5 V-tolerant on most pins, 14 I/Os support independent supply down to 1.08 V for mixed-voltage interfacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L562VET6, the STM32U575ZIT6 offers greater memory and compute headroom but sacrifices USB-C PD integration, while the RA4M3G20FB provides larger Flash at lower cost but lacks hardware-enforced TrustZone isolation and cryptographic accelerators essential for certified secure boot.

Availability

STM32L562VET6 is available at Aetrix Electronics and suitable for industrial wireless sensor nodes, portable medical monitors, smart utility meters, and secure IoT gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32L562VET6 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, specializing in microcontrollers, power management, and automotive ICs with strong focus on energy efficiency and functional safety.

The STM32L5 series is designed for ultra-low-power, high-security embedded applications - combining Arm TrustZone with ST's FlexPowerControl and cryptographic accelerators to address industrial, medical, and smart infrastructure requirements.

FAQ

What is the maximum operating temperature range for STM32L562VET6?

The STM32L562VET6 is rated for –40°C to +85°C ambient operation per DS12736 Rev 5. This industrial temperature grade is validated across all low-power modes and peripheral functions, including SMPS regulation and TrustZone-secured memory access, making it suitable for deployment in uncontrolled environments like outdoor utility meters or factory-floor sensors.

Does STM32L562VET6 support external memory interfaces?

Yes - it integrates both Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, NAND, and FRAM, and OCTOSPI interface for high-speed serial flash. OCTOSPI includes on-the-fly decryption (OTFDEC) for AES-128–encrypted external memory, enabling secure XIP execution without exposing decrypted code in internal RAM.

How does the SMPS step-down converter improve power efficiency?

The embedded SMPS reduces active-mode current consumption to 62 μA/MHz at 3 V - a 42% improvement over LDO-only operation. It dynamically switches between buck and LDO modes based on load and voltage requirements, and supports external SMPS components for further optimization in high-current applications like motor control or audio amplification.

Can STM32L562VET6 be used for USB Type-C power delivery applications?

Yes - it integrates a dedicated USB Type-C™/Power Delivery controller (UCPD) compliant with USB PD 3.0. The UCPD handles physical layer signaling, policy engine execution, and VCONN switching, enabling dual-role port (DRP) functionality, programmable power supply (PPS), and secure firmware updates over USB-C without external PD controllers.