Item specifics
Description
STM32H743VIH6 Product Overview
STM32H743VIH6 is a Cortex-M7 MCU at 480 MHz with double-precision FPU, TFBGA-100. 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, 16 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. 80 x 5 V-tolerant I/Os. 1.62–3.6 V, -40–85 °C. Compared to the LQFP-100 H743VGT6, this model uses an even more compact TFBGA-100 package, further reducing PCB footprint while retaining the same powerful graphics, real-time control, and secure networking capabilities — ideal for extremely space-constrained high-end HMI and industrial applications.
STM32H743VIH6 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, 16 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: 80 (5 V-tolerant)
Package: TFBGA-100
Temperature Range: -40°C to 85°C
STM32H743VIH6 Applications
Compact HMI: Industrial touchscreens, small graphical dashboards, smart home panels
Real-Time Control & Networking: PLCs, servo drives, industrial Ethernet gateways
Security Systems: Secure communication nodes, data encryption terminals
Multimedia Processing: JPEG image processing, digital audio equipment
Extremely Space-Constrained Devices: Ultra-compact handhelds, portable medical instruments, precision data acquisition
STM32H743VIH6 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
80 I/Os in Ultra-Compact TFBGA-100 Package: No compromise on performance, minimal footprint
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. What are the characteristics of the TFBGA‑100 package on the STM32H743VIH6, and how does it compare with the LQFP‑100 STM32H743VIT6?
Both share the same Cortex‑M7 480 MHz core, 2 MB dual‑bank Flash, 1 MB SRAM, and all digital/analog peripherals, and both provide 82 usable I/Os. The key difference is the package: the VIH6 uses a TFBGA‑100 measuring only 8 mm × 8 mm, while the VIT6 uses an LQFP‑100 at 14 mm × 14 mm. The BGA package occupies significantly less PCB area, making it ideal for space‑constrained compact devices, but requires reflow soldering. If you prioritize extreme space savings and have BGA assembly capability, the VIH6 is the perfect choice; if hand‑solderability and visual inspection are more important, the VIT6 is friendlier.
2. Is the TFBGA‑100 package (0.8 mm ball pitch) difficult to solder? Is low‑volume production feasible?
The 0.8 mm pitch is relatively comfortable by BGA standards, but reflow soldering or a professional BGA rework station is still required—hand soldering with an iron is not possible. For low‑volume production, good yields can be achieved with proper stencil design and controlled reflow profiles. During prototyping, it is strongly recommended to develop software first on a NUCLEO‑H743ZI or Discovery board, and only transition to the BGA version for mass production after the hardware design is finalized.
3. How is the 2 MB dual‑bank Flash used in practice? How is OTA update implemented?
The dual‑bank Flash allows the MCU to execute current firmware from one bank while erasing and writing new firmware to the other. After the new version is downloaded and verified, a simple boot address switch completes the update. If an unexpected power loss or verification failure occurs, the system can automatically roll back to the original firmware. This mechanism makes over‑the‑air updates extremely safe, making it ideal for industrial IoT gateways, medical devices, and critical infrastructure nodes.
4. How is the 1 MB SRAM organized, and what practical benefits does it bring for 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 lowest‑latency interrupt service routines and deterministic control loops. The multi‑bank architecture also allows DMA and the CPU to access different memory regions simultaneously without blocking, significantly improving data throughput when handling Ethernet, high‑speed ADC acquisition, and motor control concurrently.
5. Are the Chrom‑ART accelerator and LCD controller limited in the TFBGA‑100 package?
The Chrom‑ART (DMA2D) hardware accelerator itself uses no extra I/Os, so it is fully available. However, the on‑chip TFT‑LCD controller (LTDC) requires many pins for a 24‑bit RGB display—driving a full 24‑bit interface would consume nearly half of the 82 available I/Os. You can still drive a 16‑bit parallel display or a smaller resolution screen, or alternatively use an SPI/QSPI smart display to free up GPIOs for communication and control, striking a balance between graphics and other peripherals.
6. What hardware security features does the chip include? Is it suitable for secure boot?
It integrates a hardware true‑random‑number generator (TRNG), AES‑256, SHA‑1/SHA‑2, and HMAC accelerators for efficient encryption and hashing. Combined with dual‑bank Flash and code readout protection (RDP), it can establish a complete chain of trust from secure boot to encrypted firmware updates, effectively preventing unauthorized firmware access or tampering. This is especially important in payment terminals, IoT security gateways, and industrial controllers where intellectual property must be protected.
7. In the 100‑pin BGA package, can Ethernet, USB HS, and CAN FD be used simultaneously?
Yes, but careful pin‑multiplexing planning is required. The Ethernet RMII interface uses about 9 pins, the USB HS ULPI interface requires approximately 12 pins, and each FDCAN controller needs 2 pins (TX/RX). With 82 I/Os available, bringing out all these high‑speed interfaces concurrently is feasible, though they will consume a significant portion of the GPIOs, potentially limiting the number of additional UARTs, SPIs, or I²C interfaces. It is recommended to use STM32CubeMX for upfront pin assignment to ensure all required peripherals can coexist without conflict.
8. What external memory types can be connected via FMC and QSPI? Is SDRAM supported?
The Flexible Memory Controller (FMC) supports standard SDRAM, allowing tens of megabytes of runtime memory expansion, and can also interface with parallel NOR/NAND Flash. The dual Quad SPI interfaces support high‑speed NOR Flash or HyperRAM with memory‑mapped capability for code or graphics storage. In the 100‑pin package, it is possible to bring out a 16‑bit SDRAM bus while still retaining both QSPI ports and an SDMMC interface, offering a highly flexible storage combination.
9. How should thermal design be handled for the TFBGA‑100 package? Is an extra heatsink required?
At 480 MHz full load, power consumption is typically around 1 W. The TFBGA‑100 package has no exposed thermal pad; heat is primarily conducted through GND balls into the PCB. It is recommended to use continuous ground copper fills on all layers beneath the chip and to add dense thermal vias to spread heat into inner and back‑side copper layers. Under normal ventilation, proper PCB thermal design keeps the chip operating reliably within the commercial temperature range (0 °C–85 °C) without an additional heatsink.
10. If I need more I/Os or a larger display interface, what upgrade paths are available?
If 82 I/Os are insufficient or a full 24‑bit RGB display interface is required, consider upgrading to the TFBGA‑240+25 packaged STM32H743XIH6. It provides up to 168 I/Os while retaining the same 2 MB Flash and 1 MB SRAM, greatly expanding peripheral breakout capability with full pin compatibility and software ecosystem consistency—code migration requires virtually no modification.