STMicroelectronics STM32H7A3VIT6Q

Overview

STM32H7A3VIT6Q from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 280 MHz with double-precision FPU, 2 Mbytes of flash memory, 1.4 Mbytes of RAM (including 64 Kbytes ITCM + 128 Kbytes DTCM), and integrated SMPS regulator. It targets high-performance embedded applications requiring real-time signal processing, graphics acceleration, and multi-interface connectivity - such as industrial HMIs and motor control systems.

For engineers reviewing the STM32H7A3VIT6Q datasheet, STM32H7A3VIT6Q pinout, STM32H7A3VIT6Q application, or STM32H7A3VIT6Q equivalent, key selection criteria include its dual-bank flash with read-while-write capability, 168 GPIOs with 133 MHz toggle rate, dual CAN FD + TT-CAN support, JPEG hardware codec, and LCD-TFT controller with Chrom-ART DMA2D accelerator.

Technical Context

The device implements a six-stage dual-issue Cortex-M7 core with Harvard architecture, 16 KB instruction and 16 KB data caches, and tightly coupled memory interfaces for deterministic timing-critical routines. Its interconnect matrix comprises one AXI and two AHB bus matrices, five DMA controllers (including MDMA and DFSDM-dedicated DMA), and domain-level power gating for CPU and Smart Run Domains.

It integrates dual Octo-SPI interfaces supporting HyperRAM/NOR/PSRAM at up to 140 MHz (SDR) and 110 MHz (DTR), plus an FMC with SDRAM/NAND/NOR support. Analog subsystem includes two 16-bit ADCs (up to 3.6 MSPS), dual DACs (12-bit single + dual-channel), two op-amps (8 MHz GBW), and two ultra-low-power comparators - all synchronized via shared clock domains and configurable voltage scaling.

Key Specifications

Pinout & Package

LQFP100 package with 100 leads, 0.5 mm pitch, exposed thermal pad, ECOPACK2 compliant. Dimensions: 14.0 × 14.0 × 1.4 mm (max height).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance Arm Cortex-M7 microcontroller applications.

Compared with STM32H7B3VIT6 and STM32H743VIT6, the STM32H7A3VIT6Q uniquely combines integrated SMPS, JPEG codec, and LTDC in LQFP100 - making it the only option among the three that delivers full display pipeline + power efficiency + firmware compression in a single 100-pin package.

Availability

STM32H7A3VIT6Q is available at Aetrix Electronics and suitable for industrial HMIs, motor control systems, medical imaging edge nodes, and smart building gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32H7A3VIT6Q 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 STM32H7 series targets high-end embedded applications demanding real-time performance, rich graphics, and multi-protocol connectivity - with the H7A3 variant optimized for cost-sensitive, power-efficient designs featuring integrated SMPS and JPEG acceleration.

FAQ

What is the maximum operating frequency and supported voltage range for STM32H7A3VIT6Q?

The STM32H7A3VIT6Q operates at up to 280 MHz with a supply voltage range of 1.62 V to 3.6 V. At voltages below 2.7 V, the High-Speed Low-Voltage (HSLV) feature must be enabled on compatible I/Os to maintain 133 MHz toggle rate. The embedded SMPS regulator supports direct VCORE supply down to 0.65 V, enabling dynamic voltage scaling for power optimization.

Does STM32H7A3VIT6Q support hardware JPEG encoding and decoding?

Yes - the device integrates a dedicated hardware JPEG codec capable of real-time compression and decompression of images up to 4096×4096 pixels. It supports baseline JPEG format with programmable quality factor and Huffman table, and operates independently of the CPU using DMA transfers - reducing CPU load by up to 90% during image processing tasks.

How many CAN interfaces does STM32H7A3VIT6Q include, and what protocols do they support?

The STM32H7A3VIT6Q integrates three CAN controllers: two support CAN FD (ISO 11898-1, up to 5 Mbps data rate) and one supports time-triggered CAN (TT-CAN, ISO 11898-4). All three share common message RAM and filter banks, and support loopback/self-test modes. TT-CAN includes schedule table management and synchronization via reference messages for deterministic network timing.

What are the key low-power features of STM32H7A3VIT6Q in Stop and Standby modes?

In Stop mode, current consumption drops to 32 µA with full 1.4 MB RAM retention and all clocks stopped except LSE/RTC. In Standby mode, it draws 2.8 µA with RTC and LSE active, PDR disabled, and backup SRAM powered off. With VBAT supply, it achieves 0.8 µA while maintaining RTC, LSE, and 4 KB backup SRAM - enabling decade-long battery-backed timekeeping in metering or security applications.