Item specifics
Description
STM32H743XIH6 Product Overview
STM32H743XIH6 is a Cortex-M7 MCU at 480 MHz with double-precision FPU, TFBGA-240+25. 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 168 x 5 V-tolerant I/Os. 1.62–3.6 V, -40–85 °C. Compared to the LQFP-208 H743BIT6, this model uses an even more compact TFBGA-240+25 package while delivering the same 168 I/Os and full graphics, security, and networking features, making it the top choice for pin-intensive, space-constrained high-performance HMI and real-time control applications.
STM32H743XIH6 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: 168 (5 V-tolerant)
Package: TFBGA-240+25
Temperature Range: -40°C to 85°C
STM32H743XIH6 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
Pin-Intensive Systems: Space-constrained devices requiring max I/O, graphics, and security
STM32H743XIH6 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
168 I/Os in Ultra-Compact TFBGA-240+25 Package: Maximum pins in a minimal size, combining high performance with 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. The STM32H743XIH6 uses a TFBGA‑240+25 package. What are its characteristics, and what advantages does it offer over the LQFP‑144 version?
The TFBGA‑240+25 is a high‑density BGA package measuring just 14 mm × 14 mm, yet it provides up to 168 usable I/Os along with 2 MB on‑chip Flash and 1 MB SRAM. Compared to the LQFP‑144 package (up to 114 I/Os), it brings out significantly more peripherals in a smaller PCB area, making it especially suitable for high‑end embedded systems that need to simultaneously connect SDRAM, an LCD, Ethernet, USB HS, multiple CAN FD channels, and numerous sensors and actuators—all within a very tight enclosure space.
2. How difficult is it to solder the TFBGA‑240+25 package? Is it suitable for low‑volume hand assembly?
This package features a 0.8 mm ball pitch, which is moderate by BGA standards, but it still requires reflow soldering or a professional BGA rework station; hand soldering with an iron is not feasible. For low‑volume production, good yields can be achieved with proper stencil design and reflow profile control. During prototyping, it is highly recommended to first develop and debug on a compatible NUCLEO or Discovery board, then transition to the BGA for volume production after the design is frozen.
3. With so many I/Os, can dual QSPI, SDRAM, LCD, and Ethernet all be brought out simultaneously?
Absolutely. The 240 balls (including 25 additional dedicated balls) provide ample pins, allowing a 32‑bit SDRAM bus, a 24‑bit RGB LCD interface, an RMII Ethernet connection, and two Quad SPI ports to be used concurrently while still leaving plenty of GPIOs for UARTs, SPI, I²C, CAN FD, and other peripherals, with minimal pin conflicts. This makes the XIH6 an ideal choice for gateways, PLCs, and complex HMIs that demand extremely high peripheral integration.
4. What tasks can the 480 MHz Cortex‑M7 with Chrom‑ART and 1 MB SRAM handle in terms of graphics and real‑time processing?
With 1027 DMIPS of processing power and the Chrom‑ART (DMA2D) hardware accelerator, it can drive a 1024×768 display while smoothly running complex TouchGFX or LVGL graphical interfaces. The 1 MB of zero‑wait‑state SRAM ensures that real‑time control loops (such as motor FOC) and high‑speed data acquisition (via 5 Msps ADCs) are not affected by graphics rendering. It is well‑suited for industrial HMIs, medical monitors, smart‑home control panels, and high‑performance drone flight controllers, delivering in a single chip what previously required an MCU+FPGA or MCU+MPU combination.
5. What hardware security accelerators are integrated? Does it support secure firmware updates?
It integrates a true‑random‑number generator (TRNG), AES‑256, SHA‑1/SHA‑2, and HMAC hardware accelerators for efficient encryption and hashing. Combined with the 2 MB dual‑bank Flash, secure OTA updates can be implemented—new firmware is downloaded to the alternate bank, its signature verified, and then switched; if the update fails, automatic rollback ensures continuous reliable operation. This security feature is especially important in payment terminals, IoT gateways, and industrial controllers.
6. How much external memory can be connected via FMC and dual QSPI? What is a sensible way to combine them?
The Flexible Memory Controller (FMC) supports standard 16/32‑bit SDRAM, allowing up to 256 MB of runtime memory expansion. The dual Quad SPI interfaces support memory‑mapped mode and can connect high‑speed NOR Flash up to 512 Mbit for code, graphics assets, and file systems. A recommended approach is to keep the most latency‑critical code and data in on‑chip SRAM, while placing large graphics resources, logs, and redundant firmware in external Flash and SDRAM, striking a good balance between performance and capacity.
7. How should power and thermal design be handled? Is an extra heatsink needed?
At 480 MHz full load, power consumption is typically around 1–1.5 W. The TFBGA‑240+25 package does not have a dedicated thermal pad; heat is primarily conducted through GND balls into the PCB. It is recommended to use as much continuous copper for ground planes on all layers beneath the chip as possible, and to add dense thermal vias to conduct heat into inner ground layers and the back‑side copper pour. With adequate ventilation, proper PCB thermal design keeps the chip operating reliably within the commercial temperature range (0 °C–85 °C) without an external heatsink.
8. Is the software toolchain for the STM32H743XIH6 mature? Can I reuse code from previous projects?
Very mature. It is fully compatible with the STM32Cube ecosystem, including the free tools STM32CubeMX and STM32CubeIDE, and the comprehensive STM32CubeH7 firmware package. If you have previously developed on STM32F4, F7, or other H7 series projects, the vast majority of HAL code can be directly reused; the main modifications involve pin assignments and external memory initialization. ST also provides numerous reference designs and application notes specifically for BGA packages to help developers get started quickly.
9. What low‑power modes does this chip support? How low can standby power go?
The H743 supports three main low‑power modes: Sleep, Stop, and Standby. In Standby mode, with only backup registers and optionally the RTC maintained, typical power consumption drops to a few microamps. In Stop mode, the main supply remains on and the 1 MB SRAM contents are retained, with power in the hundreds of microamps. This allows even battery‑powered or long‑standby industrial equipment to benefit from the H743's high performance.
10. If I need more SRAM or a wider temperature range, what upgrade options are available?
If 1 MB of SRAM is insufficient, you can upgrade to the pin‑compatible STM32H753XIH6, which retains the 2 MB Flash and all peripherals while offering a larger SRAM capacity. For an industrial temperature range of -40 °C to 105 °C, industrial‑grade variants of the STM32H743 series are available. All these upgrade paths stay within the same STM32Cube ecosystem, enabling extensive code and PCB design reuse.