Item specifics
Description
STM32H743ZIT6 Product Overview
STM32H743ZIT6 is a Cortex-M7 MCU at 480 MHz with double-precision FPU, LQFP-144. 2 MB dual-bank Flash, 1 MB SRAM, LCD-TFT controller (up to XGA), Chrom-ART accelerator (DMA2D), hardware JPEG codec, Ethernet MAC, USB OTG HS/FS (HS requires external ULPI PHY), CAN FD, HW crypto (AES/CRYP/HASH/RNG), dual Quad SPI, FMC (SDRAM), three 16-bit ADCs (5 Msps, 24 ch), two 12-bit DACs, two comparators, two op-amps, advanced motor control timers, GP/LP timers, RTC, 8×USART/UART, 5×SPI/I2S, 4×I2C, SDIO, SAI, SPDIF-Rx. Up to 114 x 5 V-tolerant I/Os. 1.62–3.6 V, -40–85 °C. Compared to the H743ZGT6 with 1 MB Flash, this model doubles the Flash to 2 MB, providing ample storage for complex HMIs, large programs, and secure networking — the top storage choice in the H743 144-pin series.
STM32H743ZIT6 Core Features
Core: Cortex-M7 480 MHz, DPFPU + L1 cache (16 KB I-cache + 16 KB D-cache)
Memory: 2 MB Dual-Bank Flash, 1 MB SRAM (incl. large DTCM and ITCM)
Graphics & Multimedia: LCD-TFT controller (up to XGA), Chrom-ART accelerator (DMA2D), HW JPEG codec
Connectivity: Ethernet MAC, USB OTG HS/FS (HS needs external ULPI PHY), CAN FD, SDIO, SAI, SPDIF-Rx, 8×USART/UART, 5×SPI/I2S, 4×I2C
Security: Hardware AES/CRYP/HASH/RNG crypto coprocessor
Analog: 3×16-bit ADCs (5 Msps, 24 ch), 2×12-bit DACs, 2×Comparators, 2×Op-Amps
Motor Control: 2×Advanced Timers (PWM/Deadtime/Brake), multiple GP/LP timers
Memory Expansion: FMC (SDRAM/PSRAM/NOR/NAND), Dual Quad SPI
I/Os: 114 (5 V-tolerant)
Package: LQFP-144
Temperature Range: -40°C to 85°C
STM32H743ZIT6 Applications
Advanced HMI: Industrial touchscreens, graphical dashboards, smart home control panels
Real-Time Control & Networking: High-end PLCs, servo drives, industrial Ethernet gateways
Security Systems: Secure communication nodes, data encryption terminals
Multimedia Processing: JPEG image compression/decompression, digital audio equipment
Portable Medical & Instrumentation: High-performance handheld devices, precision data acquisition
STM32H743ZIT6 Key Advantages
480 MHz Cortex-M7 + DPFPU: Ultimate real-time processing and floating-point performance
2 MB Flash + 1 MB SRAM: Massive storage for complex code and large data buffers
LCD-TFT + Chrom-ART + JPEG: Full hardware graphics and image acceleration for smooth displays and fast image processing
Ethernet + CAN FD + HW Crypto: Single-chip for industrial networking, real-time communication, and data security
2 MB Dual-Bank Flash: Supports safe firmware updates and large program storage
114 I/Os in Compact LQFP-144 Package: Rich pin count, high-density integration
Dual Quad SPI + FMC: Flexible external memory expansion
1.62–3.6 V Wide Supply: Adaptable to various power scenarios
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FAQ
1. How much performance can the Cortex‑M7 core of the STM32H743ZIT6 deliver at 480 MHz? Can it replace a traditional microprocessor?
Its Cortex‑M7 core with double‑precision FPU and DSP extensions achieves up to 1027 DMIPS and 2400 CoreMark at 480 MHz. While it is a microcontroller, its processing capability surpasses some low‑end application processors. With 2 MB of on‑chip Flash and 1 MB SRAM, the H743 can handle complex real‑time control, DSP, and graphics on a single chip, and in some cases it can indeed replace a two‑chip MCU+MPU solution, simplifying system design.
2. How is the 1 MB on‑chip SRAM organized, and how does it benefit high‑speed real‑time tasks?
The 1 MB SRAM is partitioned into DTCM (Data Tightly Coupled Memory), ITCM (Instruction Tightly Coupled Memory), AXI SRAM, and multiple AHB SRAM blocks. DTCM and ITCM provide zero‑wait‑state CPU access for the most demanding interrupt response and deterministic code execution. The multi‑bank architecture also allows DMA and the CPU to access different memory regions simultaneously without blocking—critical when concurrently handling Ethernet, LCD refresh, high‑speed ADC acquisition, and motor control, significantly improving system throughput.
3. Is the 2 MB on‑chip Flash sufficient, and does it support a dual‑bank structure?
2 MB of Flash is ample for the vast majority of complex embedded applications, comfortably accommodating large RTOS kernels, graphics libraries, file systems, and communication stacks. Importantly, this Flash supports a dual‑bank architecture, allowing code execution from one bank while the other is being erased and written. This makes over‑the‑air (OTA) firmware updates both safe and convenient—new firmware is downloaded to the alternate bank and activated after verification, with automatic rollback if the update fails, which is highly desirable for industrial, medical, and IoT equipment requiring high reliability.
4. What can the Chrom‑ART graphics accelerator actually do, and what kind of display can the H743 drive?
Chrom‑ART (DMA2D) is a hardware 2D graphics accelerator dedicated to fast fills, copies, blending, and pixel‑format conversion. Paired with the on‑chip TFT‑LCD controller, the H743 can directly drive a 24‑bit RGB display at resolutions up to 1024×768, smoothly running complex user interfaces. Chrom‑ART offloads graphics tasks to the background, freeing the Cortex‑M7 core to focus on real‑time control and data processing—ideal for industrial HMIs, smart‑home panels, and medical instruments that require sophisticated user interaction.
5. What hardware security features does it include? Does it support secure boot?
The H743 integrates a comprehensive set of hardware security modules, including a true‑random‑number generator (TRNG), AES‑256, SHA‑1/SHA‑2, and HMAC hardware accelerators. It also supports secure boot from external Flash, and together with code readout protection (RDP) and a Memory Protection Unit (MPU), it can establish a complete chain of trust from silicon to application, protecting firmware from unauthorized access or tampering. This makes the H743 well‑suited for payment terminals, IoT gateways, and secure communication devices with stringent data‑protection requirements.
6. What external memory types can be connected via the FMC and dual QSPI interfaces?
The Flexible Memory Controller (FMC) supports standard SDRAM and parallel NOR/NAND Flash, easily expanding runtime memory and non‑volatile storage by tens of megabytes. The dual Quad SPI interfaces support high‑speed NOR Flash or HyperRAM at up to 200 MHz DDR mode. These interfaces do not conflict, allowing you to simultaneously use external SDRAM for data buffering, QSPI Flash for code and graphics storage, and parallel NOR Flash for redundant firmware—creating a highly flexible memory architecture.
7. What high‑speed communication interfaces does the chip offer? Can Ethernet, USB HS, and CAN FD be used concurrently?
It integrates a 10/100M Ethernet MAC (with IEEE 1588 precision time protocol), a USB 2.0 OTG high‑speed controller (480 Mbps), and up to three FDCAN (Flexible Data‑Rate CAN) controllers. All of these can operate simultaneously without conflicts. Both the Ethernet MAC and USB HS feature dedicated DMA to significantly reduce CPU overhead. The 144‑pin LQFP package provides enough I/Os to bring out all these high‑speed interfaces, making it ideal for industrial gateways, vehicle network controllers, and distributed control systems that require multi‑protocol real‑time communication.
8. What about power consumption and thermal performance? Is it reliable in industrial environments?
The H743 is built on a 40 nm low‑power process and typically consumes around 1 W at 480 MHz full load. Although the LQFP‑144 package lacks an exposed thermal pad, adequate heat dissipation can be achieved through proper PCB copper pours and ground plane design. The chip supports dynamic frequency scaling and multiple low‑power modes, significantly reducing power during idle periods. It is rated for the commercial temperature range (0 °C–85 °C), and with good thermal design, long‑term stable operation can be maintained within that range; for wider temperature requirements, industrial‑grade or high‑temperature variants from the H7 family are available.
9. What software tools are needed to develop for the STM32H743, and is it compatible with previous STM32 ecosystems?
It is fully compatible with the STM32Cube ecosystem, including the free STM32CubeMX graphical configuration tool, STM32CubeIDE integrated development environment, and the feature‑rich STM32CubeH7 firmware package. When migrating from STM32F4 or F7, a large portion of HAL code can be reused, with the main adjustments being peripheral configuration and memory mapping. Extensive example projects and middleware covering Ethernet, USB, graphics, and file systems are provided to accelerate project development.
10. If I need more SRAM or stronger graphics performance, what upgrade options are available?
If 1 MB of SRAM is insufficient, you can upgrade to the pin‑compatible STM32H753 series, which offers increased SRAM while retaining the same performance and 2 MB Flash. For enhanced graphics performance, the STM32H7B0 series features a more powerful Chrom‑ART accelerator and larger on‑chip memory. All these migration paths stay within the unified STM32Cube ecosystem, enabling extensive hardware and code reuse.