STMicroelectronics STM32H742VIT6

Overview

STM32H742VIT6 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), dual CAN FD interfaces, and hardware JPEG codec. It integrates LCD-TFT controller, Chrom-ART accelerator, and high-resolution timer for real-time motor control in industrial HMIs.

For engineers reviewing the STM32H742VIT6 datasheet, STM32H742VIT6 pinout, STM32H742VIT6 application, or STM32H742VIT6 equivalent, key selection criteria include dual-domain power management (D1/D2/D3), Quad-SPI interface timing (133 MHz), ADC resolution (16-bit, 3.6 MSPS), and LQFP100 package compatibility with legacy PCB footprints.

Technical Context

The STM32H742VIT6 implements a triple-power-domain architecture (D1/D2/D3) enabling independent clock gating and voltage scaling across high-performance compute, communication peripherals, and system control blocks. Its interconnect matrix comprises one AXI and two AHB bus matrices with five AHB2-APB bridges, supporting concurrent high-bandwidth data flows.

It features three PLLs - one system clock PLL with fractional mode, plus two kernel-clock PLLs - feeding independent clock trees for CPU, peripheral, and audio domains. The MDMA controller supports linked-list DMA transfers, offloading CPU during burst memory operations without interrupt overhead.

Key Specifications

Pinout & Package

LQFP100 package: 14 × 14 mm body, 0.5 mm lead pitch, exposed thermal pad (EPAD) on underside for enhanced thermal dissipation in high-CPU-load applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743VIT6, the STM32H742VIT6 trades FMC and crypto acceleration for integrated LCD-TFT and JPEG codec - making it optimal for cost-sensitive HMI designs where display throughput matters more than external memory expansion. Against STM32H753VIT6, it lacks hardware PUF but retains identical real-time performance and power efficiency.

Availability

STM32H742VIT6 is available at Aetrix Electronics and suitable for industrial HMIs, medical imaging gateways, programmable logic controllers, and EV charging station controllers requiring stable component supply across multi-year production cycles.

Supply support for STM32H742VIT6 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 automotive-grade components since 1987.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich multimedia capability, and multi-domain power optimization - especially in industrial automation, medical devices, and smart infrastructure.

FAQ

What is the maximum operating frequency of the STM32H742VIT6 CPU core?

The STM32H742VIT6 features an Arm Cortex-M7 core rated for up to 480 MHz operation under full voltage scaling (VOS0 range). This frequency is achievable with proper PCB layout, VCAP decoupling (2.2 µF per pin), and thermal management - delivering 1027 DMIPS and 2.14 DMIPS/MHz (Dhrystone 2.1).

Does the STM32H742VIT6 support external SDRAM?

No - the STM32H742VIT6 does not integrate a Flexible Memory Controller (FMC). Unlike the STM32H743VIT6, it omits SDRAM/NOR/NAND support. Its memory subsystem relies on internal flash (2 MB), TCM/SRAM (1 MB total), and Quad-SPI for external serial flash/XIP.

How many CAN FD interfaces does the STM32H742VIT6 provide?

The STM32H742VIT6 integrates two fully independent CAN FD controllers (FDCAN1 and FDCAN2), each supporting bit rates up to 5 Mbps, ISO 11898-1:2015 compliance, and time-triggered communication modes. Both share dedicated GPIO remapping for flexible board routing.

What is the purpose of the VCAP pins on the STM32H742VIT6?

The VCAP1 and VCAP2 pins connect to external 2.2 µF ceramic capacitors that stabilize the internal 1.2 V LDO supplying the CPU voltage domain. These pins must be decoupled close to the package; omission causes boot failure or erratic core behavior at >240 MHz due to insufficient transient response.