STMicroelectronics STM32H743BGT6

Overview

STM32H743BGT6 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 three PLLs with fractional mode, 16-bit ADCs (3.6 MSPS), dual 12-bit DACs, and LCD-TFT controller - deployed in industrial HMI, motor control gateways, and edge AI inference nodes requiring deterministic real-time response.

For engineers reviewing the STM32H743BGT6 datasheet, STM32H743BGT6 pinout, STM32H743BGT6 application, or STM32H743BGT6 equivalent, key selection criteria include D1/D2/D3 domain power gating, AXI/AHB interconnect matrix bandwidth, MDMA controller latency, Quad-SPI interface timing (133 MHz), and VBAT-backed RTC + backup SRAM retention.

Technical Context

The STM32H743BGT6 implements a triple-domain power architecture (D1 high-performance, D2 communication/timers, D3 reset/clock/PM) with independent clock gating and voltage scaling across six ranges. Its interconnect uses one AXI and two AHB bus matrices bridged by five AHB2-APB and two AXI2-AHB bridges, enabling concurrent high-bandwidth peripheral access without CPU contention.

It embeds four DMA controllers: one high-speed MDMA with linked-list support for zero-CPU-overhead memory-to-peripheral transfers; two dual-port DMAs with FIFO for audio/video streaming; and one basic DMA with request router for flexible peripheral arbitration - critical for deterministic sensor fusion and real-time control loops.

Key Specifications

Pinout & Package

STM32H743BGT6 is housed in a 100-ball TFBGA package (8 × 8 mm, 0.8 mm pitch) with exposed thermal pad. Pin assignment follows ST's standardized STM32H743xG ballout, supporting full peripheral remapping via alternate function registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743BGT6, the H753BIT6 extends security capabilities for regulated deployments, while the H743VIT6 trades TFBGA density for LQFP manufacturability - neither offers higher clock speed or expanded analog resources.

Availability

STM32H743BGT6 is available at Aetrix Electronics and suitable for industrial HMI, motor control gateways, edge AI vision sensors, and secure industrial gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32H743BGT6 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich peripheral integration, and scalable security - optimized for industrial automation, medical imaging, and AI-at-the-edge systems.

FAQ

What is the maximum operating frequency of the STM32H743BGT6's Cortex-M7 core?

The STM32H743BGT6 operates its Arm Cortex-M7 core at up to 480 MHz under specified voltage and temperature conditions (1.14–1.32 V core supply, -40°C to +105°C). This frequency is achieved using the internal PLL with fractional divider and requires proper VCAP capacitor placement and PCB layout per DS12110 §6.3.2.

Does the STM32H743BGT6 support external SDRAM, and what interface is used?

Yes, the STM32H743BGT6 supports external SDRAM up to 256 MB via its Flexible Memory Controller (FMC) with 32-bit data bus and synchronous clocking up to 100 MHz. The FMC also supports PSRAM, NOR/NAND flash, and SRAM, with dedicated control signals routed to specific GPIO banks per pinout mapping in DS12110 §5.

How many independent CAN FD interfaces does the STM32H743BGT6 provide?

The STM32H743BGT6 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 (TT-CAN) mode. Both controllers share no register overlap and can operate simultaneously on separate physical buses.

What is the purpose of the TCM RAM in the STM32H743BGT6 memory architecture?

The TCM RAM (192 KB total: 64 KB ITCM + 128 KB DTCM) provides zero-wait-state, tightly coupled memory directly accessible by the Cortex-M7 core - bypassing cache and bus arbitration. It is used for time-critical code (e.g., interrupt handlers, FOC loops) and low-latency data structures, ensuring deterministic execution unaffected by cache misses or bus contention.