STMicroelectronics STM32H742IGK6

Overview

STM32H742IGK6 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-bank read-while-write capability, and integrated FPU with L1 cache. It supports CAN FD, Ethernet MAC, USB OTG HS/FS, and hardware JPEG codec - deployed in industrial motor control systems requiring deterministic real-time response and high-bandwidth peripheral interfacing.

For engineers reviewing the STM32H742IGK6 datasheet, STM32H742IGK6 pinout, STM32H742IGK6 application, or STM32H742IGK6 equivalent, key selection criteria include its triple-domain power architecture (D1/D2/D3), 168 GPIOs with interrupt capability, 3× PLLs with fractional mode, 3× ADCs (16-bit, 3.6 MSPS), and TFBGA176+25 package compatibility for space-constrained high-performance embedded designs.

Technical Context

The STM32H742IGK6 implements a multi-bus interconnect matrix with one AXI and two AHB bus matrices, enabling concurrent high-bandwidth data transfers between CPU, DMA controllers (MDMA, dual-port DMAs), and peripherals. Its memory subsystem includes separate ITCM/DTCM RAM banks for time-critical code/data execution and a flexible external memory controller supporting SDRAM, NOR/NAND, and PSRAM at up to 100 MHz.

Power management is segmented across three independent domains: D1 for CPU and high-performance peripherals, D2 for communication interfaces and timers, and D3 for reset/clock/power control - each with configurable voltage scaling (6 ranges) and clock gating. The device integrates three PLLs: one system clock PLL and two kernel-clock PLLs, all supporting fractional-N synthesis for precise clock tree configuration.

Key Specifications

Pinout & Package

STM32H742IGK6 uses the TFBGA176+25 package (14 × 14 mm, 0.8 mm ball pitch), compliant with ECOPACK2 environmental standards. This package provides 176 I/O balls plus 25 dedicated ground and power balls arranged in a perimeter-and-array layout to minimize impedance and improve thermal dissipation in high-density PCB designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743IGK6, the STM32H742IGK6 omits dual-display Chrom-ART features but retains identical real-time control capability; versus STM32H753IIK6, it excludes hardware crypto engines - making it optimal for cost-constrained, high-throughput embedded control without regulatory security mandates.

Availability

STM32H742IGK6 is available at Aetrix Electronics and suitable for industrial motor control, medical imaging edge nodes, smart energy gateways, and automotive ADAS camera hubs requiring stable component supply across long-lifecycle production programs.

Supply support for STM32H742IGK6 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 devices for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich connectivity, and hardware-accelerated multimedia processing - specifically engineered for next-generation industrial automation, medical edge computing, and intelligent transportation systems.

FAQ

What is the maximum operating frequency of the STM32H742IGK6?

The STM32H742IGK6 operates at a maximum CPU frequency of 480 MHz using the Arm Cortex-M7 core. This speed is achievable under specified voltage and temperature conditions (VDD = 3.3 V, TA ≤ 85 °C) with proper decoupling (VCAP_1/VCAP_2 = 2.2 µF) and thermal management. The core includes L1 instruction and data caches to sustain peak throughput without memory bottlenecks.

Does the STM32H742IGK6 support external SDRAM?

Yes, the STM32H742IGK6 supports external SDRAM through its Flexible Memory Controller (FMC) with a 32-bit data bus, capable of driving SDRAM/LPSDR at up to 100 MHz in synchronous mode. However, unlike the STM32H743, it does not integrate an SDRAM clock enable pin - requiring external clock generation or use of FMC_CLK output routed to SDRAM CLK.

How many ADC channels does the STM32H742IGK6 support simultaneously?

The STM32H742IGK6 integrates three independent 16-bit ADCs (ADC1–ADC3), supporting up to 36 total input channels. All three ADCs can operate concurrently in interleaved mode, achieving a combined sampling rate of up to 3.6 MSPS with hardware-synchronized triggers - essential for multi-phase motor current sensing and vibration analysis.

Is the TFBGA176+25 package RoHS and REACH compliant?

Yes, the STM32H742IGK6 in TFBGA176+25 packaging is fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. It also meets STMicroelectronics' ECOPACK2 environmental standard, which includes lead-free terminations, halogen-free molding compounds, and reduced antimony content in flame retardants.