STMicroelectronics STM32H735IGT6

Overview

STM32H735IGT6 from STMicroelectronics is a high-performance Arm® Cortex®-M7 32-bit microcontroller operating at up to 550 MHz, featuring 1 MB flash with ECC, 564 KB SRAM (all with ECC), dual 16-bit ADCs delivering up to 3.6 MSPS, triple FD-CAN interfaces, and integrated Chrom-ART Accelerator for graphics acceleration. It targets demanding embedded applications including industrial HMI, motor control gateways, and secure IoT edge nodes requiring real-time processing, cryptographic services, and rich peripheral integration.

For engineers reviewing the STM32H735IGT6 datasheet, STM32H735IGT6 pinout, STM32H735IGT6 application, or STM32H735IGT6 equivalent, key selection considerations include its 550 MHz M7 core with L1 cache, triple FD-CAN support for automotive/industrial networking, hardware crypto accelerators (AES-128/192/256, HASH, RNG), Ethernet MAC + USB HS/FS OTG, and flexible memory interface supporting Octo-SPI with on-the-fly decryption.

Technical Context

The STM32H735IGT6 implements a dual-bank Arm Cortex-M7 core with DP-FPU, 32-KB instruction and 32-KB data caches enabling zero-wait-state execution, and MPU for robust memory protection. Its memory subsystem integrates 1 MB flash with ECC, 564 KB SRAM (128 KB TCM RAM + 432 KB system RAM + 4 KB backup SRAM), and external memory controllers for SDRAM, NOR/NAND, and PSRAM.

Peripherals include three FD-CAN controllers compliant with ISO 11898-1:2015, an Ethernet MAC with DMA, dual 16-bit ADCs with interleaved mode (7.2 MSPS), two operational amplifiers (GBW = 8 MHz), and dedicated math accelerators (CORDIC, FMAC) for real-time signal processing and trigonometric computation.

Key Specifications

Pinout & Package

The STM32H735IGT6 is packaged in a 100-pin LQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2-certified. This package supports full peripheral routing including all three FD-CAN transceivers, dual 16-bit ADCs with dedicated analog inputs, Ethernet RMII/MII pins, and parallel LCD-TFT interface signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H735IGT6, the STM32H743VIT6 trades FD-CAN3 for larger memory and DSI, while the STM32H753BIT6 enhances security certification readiness without altering real-time or connectivity capabilities - making the H735 optimal for FD-CAN-rich industrial gateways where cost and feature alignment are critical.

Availability

STM32H735IGT6 is available at Aetrix Electronics and suitable for industrial HMI gateways, secure edge nodes, and motor control hubs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.

Supply support for STM32H735IGT6 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 performance, security, and rich peripheral integration - specifically engineered for industrial automation, medical devices, and automotive domain controllers where deterministic latency and functional safety are critical.

FAQ

What is the maximum operating frequency and core architecture of the STM32H735IGT6?

The STM32H735IGT6 features an Arm Cortex-M7 core with double-precision FPU, capable of running at up to 550 MHz. It includes 32 KB instruction and 32 KB data caches, enabling zero-wait-state execution from embedded flash. Its 1177 DMIPS rating and DSP instruction set support demanding real-time signal processing tasks in industrial and automotive applications.

Does the STM32H735IGT6 support hardware cryptographic acceleration, and which algorithms are implemented?

Yes, the STM32H735IGT6 integrates dedicated hardware accelerators for AES-128/192/256, TDES, HASH (MD5, SHA-1, SHA-2), HMAC, and a true random number generator (TRNG). It also includes two OTFDEC engines for on-the-fly decryption of Octo-SPI external memory, enabling secure XiP execution without exposing decrypted code in external flash.

How many FD-CAN interfaces does the STM32H735IGT6 provide, and what standards do they support?

The STM32H735IGT6 provides three fully independent FD-CAN controllers (FDCAN1, FDCAN2, FDCAN3), each compliant with ISO 11898-1:2015. They support classical CAN and CAN FD modes up to 5 Mbps, with built-in protocol engines, message RAM filtering, and loopback/self-test capabilities - suitable for automotive gateways and industrial fieldbus consolidation.

What package type and pin count does the STM32H735IGT6 use, and is it RoHS-compliant?

The STM32H735IGT6 uses a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch), designated as LQFP100 in ST's documentation. It is RoHS-compliant and ECOPACK2-certified, meeting stringent environmental and reliability standards for industrial and automotive applications. Pin compatibility is confirmed per ST's DS13312 Rev 4 datasheet Section 7.3.