STMicroelectronics STM32H743BIT6

Overview

STM32H743BIT6 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 triple PLLs with fractional mode, hardware JPEG codec, LCD-TFT controller, and dual CAN FD interfaces - deployed in industrial HMI, motor control gateways, and real-time vision edge nodes.

For engineers reviewing the STM32H743BIT6 datasheet, STM32H743BIT6 pinout, STM32H743BIT6 application, or STM32H743BIT6 equivalent, key selection considerations include its 480 MHz M7 core with L1 cache, 168 GPIOs with interrupt capability, 3× ADCs (16-bit, 3.6 MSPS), dual USB OTG (FS/HS), and support for external SDRAM/NOR via flexible memory controller.

Technical Context

The STM32H743BIT6 implements a tri-domain power architecture (D1 high-performance, D2 communication/timers, D3 reset/clock/power) with independent clock gating and voltage scaling across six configurable ranges. Its interconnect matrix comprises one AXI and two AHB bus matrices, bridged by five AHB2-APB and two AXI2-AHB bridges.

It features three dedicated PLLs - one system clock PLL and two kernel clock PLLs - all supporting fractional-N synthesis for precise clock tree configuration. The device includes a high-resolution timer (2.1 ns resolution), Chrom-ART Accelerator (DMA2D), and DFSDM with eight sigma-delta channels for sensor interface.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK2 finish. Pinout validated per STMicroelectronics DS12110 Rev 11, Section 5 ("Pinout, pin description and alternate functions").

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743BIT6, the VIT6 variant offers identical performance with extended temperature qualification, while the H753BIT6 adds certified cryptographic acceleration - making it suitable for regulated security-critical deployments without sacrificing compute throughput or peripheral integration.

Availability

STM32H743BIT6 is available at Aetrix Electronics and suitable for industrial HMI, motor control gateways, smart camera processing units, and secure IoT gateways requiring stable component supply across long-lifecycle programs.

Supply support for STM32H743BIT6 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 - especially where concurrent processing (CPU + GPU + DSP + crypto) is required in a single chip.

FAQ

What is the maximum operating frequency and core type of the STM32H743BIT6?

The STM32H743BIT6 features an Arm Cortex-M7 core rated for up to 480 MHz operation, supported by 16 KB instruction and 16 KB data caches. It achieves 1027 DMIPS (Dhrystone 2.1) at this frequency with double-precision floating-point unit and DSP instructions enabled. The core includes a Memory Protection Unit (MPU) for secure task isolation in RTOS environments.

Does the STM32H743BIT6 support external memory expansion, and if so, what types?

Yes, the STM32H743BIT6 supports external memory expansion via its Flexible Memory Controller (FMC), which interfaces with SRAM, PSRAM, NOR flash, NAND flash, and SDRAM/LPSDR SDRAM at up to 100 MHz in synchronous mode. It also includes a Quad-SPI interface capable of 133 MHz operation for high-speed serial flash or RAM devices.

How many ADCs does the STM32H743BIT6 integrate, and what are their key specifications?

The STM32H743BIT6 integrates three independent 16-bit analog-to-digital converters, each supporting up to 36 input channels and sampling at up to 3.6 MSPS in interleaved mode. They feature hardware oversampling, analog watchdogs, and flexible trigger sources including timers and EXTI lines - enabling precise current sensing and sensor monitoring in motor control and industrial automation.

What debug interfaces are available on the STM32H743BIT6, and are they accessible in all power modes?

The STM32H743BIT6 provides SWD (Serial Wire Debug) and JTAG interfaces, both accessible in Run, Sleep, and Stop modes. SWD uses PA13 (SWDIO) and PA14 (SWCLK); JTAG requires five pins (TMS, TCK, TDI, TDO, NRST). Debug remains active during low-power modes when the debug domain is not gated - controlled via DBGMCU_CR register settings.