STMicroelectronics STM32H7A3VGT6TR

Overview

STM32H7A3VGT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 280 MHz, featuring double-precision FPU, 16 KB instruction and 16 KB data cache, 2 MB flash, and ~1.4 MB RAM (including 64 KB ITCM + 128 KB DTCM). It integrates dual Octo-SPI interfaces, FMC, 2x ADCs (16-bit, 3.6 MSPS), 2x DACs, 2x op-amps, and SMPS regulator - deployed in industrial PLCs, motor drives, and medical imaging systems.

For engineers reviewing the STM32H7A3VGT6TR datasheet, STM32H7A3VGT6TR pinout, STM32H7A3VGT6TR application, or STM32H7A3VGT6TR equivalent, key selection criteria include verified 280 MHz real-time performance, dual-bank flash with RWW support, TCM RAM allocation for deterministic code execution, and package-specific peripheral availability (e.g., LQFP100 pin count enabling full FMC + dual Octo-SPI).

Technical Context

The device implements a six-stage dual-issue Cortex-M7 core with dynamic branch prediction and Harvard architecture, enabling deterministic interrupt latency and high DMIPS/MHz efficiency (599 DMIPS @ 280 MHz). Its memory subsystem includes AXI/AHB bus matrices, three independent power domains (CPU, SRD, Backup), and hardware-accelerated peripherals including JPEG codec, Chrom-ART DMA2D, and GFXMMU.

Peripherals are distributed across four APB, three AHB, and one AXI interconnect; clocking uses three fractional PLLs (system + two kernel), while power management supports VOS0–VOS3 scaling, Stop mode (32 µA), and VBAT operation (0.8 µA) with RTC/LSE retention - all validated for −40 to +85 °C ambient operation.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), ECOPACK2-compliant, with exposed thermal pad. Pinout validated per DS13195 Rev 8 Table 7 and STM32H7A3VGT6TR-specific ball definition.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H7B3VIT6, STM32H7A3VGT6TR trades cryptographic acceleration for integrated SMPS and dual Octo-SPI - making it superior for cost-sensitive, power-constrained edge devices requiring fast serial memory. Against STM32H743VIT6, it prioritizes modern serial memory bandwidth and power integration over SDRAM flexibility and legacy parallel bus support.

Availability

STM32H7A3VGT6TR is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging frontends, smart HVAC controllers, and high-resolution TFT display terminals requiring stable component supply, long-term lifecycle assurance, and ECOPACK2-compliant packaging.

Supply support for STM32H7A3VGT6TR 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 components for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time performance, rich peripheral integration, and advanced power efficiency - specifically engineered for motor control, medical devices, and graphical HMI systems.

FAQ

What is the maximum operating frequency and supported voltage range for STM32H7A3VGT6TR?

The STM32H7A3VGT6TR operates at up to 280 MHz with a core supply voltage range of 1.62 V to 3.6 V. At 280 MHz, it requires VOS1 or VOS0 voltage scaling; the embedded SMPS regulator supports direct VCORE supply down to 1.05 V. The device maintains full functionality across −40 to +85 °C ambient temperature.

Does STM32H7A3VGT6TR support true hardware JPEG encoding and decoding?

Yes - the device integrates a dedicated hardware JPEG codec compliant with ISO/IEC 10918-1, capable of real-time encoding and decoding of baseline JPEG images up to 4096×4096 pixels. It operates independently of the CPU using DMA transfers and supports YUV422/RGB565 input/output formats without software intervention.

How many Octo-SPI interfaces does STM32H7A3VGT6TR provide, and what memory types do they support?

STM32H7A3VGT6TR provides two fully independent Octo-SPI interfaces (OCTOSPI1 and OCTOSPI2), each supporting SDR and DTR protocols up to 140 MHz and 110 MHz respectively. They interface with HyperRAM, HyperFlash, PSRAM, and serial NOR flash using standard frame formats defined in JEDEC JESD251.

Is the SMPS regulator in STM32H7A3VGT6TR configurable for external power supply use?

Yes - the integrated SMPS can be configured to supply either the internal VCORE domain or an external circuit via the VFBSMPS feedback pin and VLXSMPS output. It supports adjustable output voltage (0.6–1.4 V) with external compensation components, and its operation is managed through dedicated RCC and PWR registers without CPU intervention.