STMicroelectronics STM32H742AGI6

Overview

STM32H742AGI6 from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 480 MHz, featuring 2 MB flash, 1 MB RAM (including 192 KB TCM), and dual-domain power management (D1/D2/D3). It integrates 3× PLLs with fractional mode, 3× ADCs (16-bit, 3.6 MSPS), 2× DACs (12-bit, 1 MHz), and supports CAN FD, USB OTG HS/FS, Ethernet MAC, and LCD-TFT controller - deployed in industrial motor control systems requiring deterministic real-time response and multi-interface connectivity.

For engineers reviewing the STM32H742AGI6 datasheet, STM32H742AGI6 pinout, STM32H742AGI6 application, or STM32H742AGI6 equivalent, key selection considerations include its triple-domain voltage scaling (6 ranges), 2.95 µA Standby current (RTC/LSE active), HRTIM with 2.1 ns resolution, and TFBGA100 package compatibility with high-density PCB layouts.

Technical Context

The STM32H742AGI6 implements a split-power-domain architecture with independent D1 (Cortex-M7 core + L1 cache), D2 (peripherals including USB/Ethernet/SDMMC), and D3 (reset/clock/power management) domains, enabling granular clock gating and dynamic voltage scaling. Its interconnect matrix comprises one AXI and two AHB bus matrices with five AHB2-APB bridges, supporting concurrent high-bandwidth data flows between CPU, DMA2D, MDMA, and peripherals.

It features three dedicated PLLs: one system PLL (up to 480 MHz), plus two kernel PLLs for peripheral clocks - all supporting fractional-N synthesis for precise jitter-controlled clock generation. The device includes a hardware JPEG codec, Chrom-ART accelerator (DMA2D), and DFSDM with 8 channels for sigma-delta sensor interfacing, targeting vision-enabled edge nodes and real-time multimedia processing.

Key Specifications

Pinout & Package

STM32H742AGI6 uses the TFBGA100 package (8 × 8 mm, 0.8 mm ball pitch), with 100 I/O terminals arranged in 10 × 10 grid (corner balls omitted). Pin functions are defined per alternate function mapping in ST's UM2288 reference manual and DS12110 datasheet Section 5.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance MCU applications.

Compared with STM32H742AGI6, the H743VIT6 trades display/video acceleration for easier thermal management in LQFP, while the H753VIT6 adds hardware crypto at no performance cost - making the AGI6 optimal when compact TFBGA packaging and integrated graphics are essential.

Availability

STM32H742AGI6 is available at Aetrix Electronics and suitable for industrial motor control, medical imaging edge nodes, smart grid gateways, and automotive ADAS camera hubs requiring stable component supply across extended product lifecycles.

Supply support for STM32H742AGI6 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 devices for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich peripheral integration, and energy efficiency - specifically engineered for next-generation industrial automation, medical edge computing, and intelligent transportation systems.

FAQ

What is the maximum operating frequency and core configuration of the STM32H742AGI6?

The STM32H742AGI6 features an Arm Cortex-M7 core running at up to 480 MHz with double-precision floating-point unit (FPU), 16 KB instruction cache, and 16 KB data cache. It achieves 1027 DMIPS at peak frequency and supports DSP instructions, memory protection unit (MPU), and tightly coupled memory (TCM) for deterministic real-time execution.

Does the STM32H742AGI6 support external SDRAM, and what interface is used?

Yes, the STM32H742AGI6 supports external SDRAM up to 32-bit data bus width via its Flexible Memory Controller (FMC). The FMC operates in synchronous mode at up to 100 MHz and supports LPDDR/SDR/PSRAM/NOR/NAND memories, enabling expansion beyond on-chip 1 MB RAM for applications like frame buffering or large protocol stacks.

How does the power domain architecture improve system-level energy efficiency?

The STM32H742AGI6 divides its power system into three independent domains: D1 (core/L1 cache), D2 (communication peripherals/timers), and D3 (reset/clock/power management). Each domain can be clock-gated or powered down individually - allowing, for example, Ethernet MAC to remain active while CPU enters Stop mode, achieving 2.95 µA Standby current with RTC and LSE running.

What are the key differences between the STM32H742AGI6 and STM32H743VIT6 packages and functionality?

The STM32H742AGI6 uses TFBGA100 (8 × 8 mm), while the H743VIT6 uses LQFP100 (14 × 14 mm). Functionally, the H742AGI6 includes LCD-TFT controller and hardware JPEG codec; the H743VIT6 omits both but retains identical CPU, memory, and peripheral sets (CAN FD, USB OTG, Ethernet, ADCs, etc.), making it suitable for non-display applications with relaxed footprint constraints.