STMicroelectronics STM32H7A3AGI6Q

Overview

STM32H7A3AGI6Q from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 280 MHz with double-precision FPU, 16 KB instruction and 16 KB data cache, 1 MB flash (dual-bank), and 1.4 MB RAM including 192 KB TCM (64 KB ITCM + 128 KB DTCM). It integrates dual Octo-SPI interfaces, FMC, USB OTG HS/FS, 2x CAN FD, LCD-TFT controller, JPEG codec, and SMPS regulator - deployed in industrial PLCs, motor drives, and medical imaging systems.

For engineers reviewing the STM32H7A3AGI6Q datasheet, STM32H7A3AGI6Q pinout, STM32H7A3AGI6Q application, or STM32H7A3AGI6Q equivalent, key selection criteria include verified 280 MHz real-time performance, dual-bank flash for seamless firmware updates, deterministic TCM latency for control loops, and integrated SMPS for high-efficiency power delivery in space-constrained embedded designs.

Technical Context

The device implements a six-stage dual-issue Cortex-M7 core with dynamic branch prediction and Harvard architecture, enabling deterministic execution of time-critical control algorithms. Its interconnect matrix comprises one AXI and two AHB bus matrices, five DMA controllers (including MDMA and dual-port DMAs), and dedicated low-latency AHB-Lite peripheral bus (AHBP) for real-time peripheral access.

Memory subsystem includes dual-bank 1 MB flash supporting read-while-write, 192 KB TCM RAM (64 KB ITCM + 128 KB DTCM) for zero-wait-state code/data, 1.18 MB user SRAM on AXI/AHB, and 4 KB backup SRAM. Clocking uses three fractional PLLs - one system PLL and two kernel PLLs - with internal 64 MHz HSI and external 4–50 MHz HSE sources.

Key Specifications

Pinout & Package

STM32H7A3AGI6Q is housed in a UFBGA169 package (7 mm × 7 mm, 0.5 mm pitch), compliant with ECOPACK2 environmental standards. Pin assignment is validated per DS13195 Rev 8 Table 7 and Figure 1 block diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H7B3IGK6 and STM32H743VIT6, the STM32H7A3AGI6Q uniquely combines integrated SMPS, dual Octo-SPI, and JPEG codec in a compact UFBGA169 package - making it optimal for space-constrained, power-sensitive, and imaging-capable edge nodes where BOM reduction and feature density are decisive.

Availability

STM32H7A3AGI6Q is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging endpoints, smart building HVAC controllers, and automotive diagnostic tools requiring stable component supply across extended product lifecycles.

Supply support for STM32H7A3AGI6Q 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, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time performance, rich connectivity, and advanced graphics - with the H7A3 variant optimized for cost-sensitive, space-constrained designs requiring integrated SMPS and serial memory interfaces.

FAQ

What is the maximum operating frequency and supported voltage range for STM32H7A3AGI6Q?

The STM32H7A3AGI6Q 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 I/O high-speed low-voltage (HSLV) feature must be enabled for full-speed GPIO operation. The device supports voltage scaling in Run and Stop modes, and includes an embedded LDO with configurable output for digital circuitry.

Does STM32H7A3AGI6Q support true random number generation and cryptographic functions?

Yes, it integrates a 32-bit NIST SP 800-90B compliant true random number generator (RNG). However, unlike the H7B3 variant, it does not include hardware accelerators for AES, PKA, or hash functions. Secure firmware upgrade is supported via ROP, PC-ROP, and active tamper detection features.

How many analog-to-digital converters does STM32H7A3AGI6Q include, and what are their key specifications?

It includes two 16-bit resolution ADCs supporting up to 24 channels and 3.6 MSPS aggregate sampling rate. Both ADCs share common analog inputs and support simultaneous sampling, hardware oversampling, and injected/conversion modes. They operate across the full −40°C to +85°C ambient temperature range with calibrated offset/gain.

What debug interfaces and trace capabilities are available on STM32H7A3AGI6Q?

The device supports SWD and JTAG debug interfaces, plus a 4 KB Embedded Trace Buffer (ETB) for real-time instruction and data trace. It also provides trace clock (TRACECK) and four trace data lines (TRACED[3:0]), enabling cycle-accurate profiling and complex breakpoint analysis using standard Arm-compliant debug probes.