Item specifics
Description
The STM32F429IGH6 is a Cortex-M4 high-performance MCU from STMicroelectronics in a UFBGA-176 package. It runs at 180 MHz with FPU and ART Accelerator. It integrates 1 MB Flash, 256 KB SRAM (incl. 64 KB CCM), LCD-TFT controller (up to XGA resolution), Chrom-ART Accelerator (DMA2D) for hardware 2D graphic operations, Ethernet 10/100 MAC (IEEE 1588 PTP, MII/RMII), USB 2.0 OTG (FS/HS, FS on-chip PHY), camera interface (DCMI), hardware crypto/HASH/true random number processor, FMC (supporting SRAM/PSRAM/NOR/NAND/SDRAM), dual CAN 2.0B, two 12-bit DACs, three 12-bit ADCs (24ch, up to 7.2 MSPS in triple-interleaved mode), up to 17 timers (incl. 2 advanced motor control PWM/deadtime). 140 I/Os, all 5 V-tolerant. Supply 1.8–3.6 V, -40–85 °C. Compared to the STM32F429BIT6 (LQFP-208, 168 I/Os), this model offers a more compact package with slightly fewer I/Os while retaining the complete LCD-TFT, Chrom-ART, Ethernet, and crypto features, making it an ideal choice for space-constrained embedded graphics applications. Compared to the STM32F427IGH6 (without LCD, Chrom-ART, and SDRAM), this model adds an LCD-TFT controller, Chrom-ART accelerator, and FMC with SDRAM support, significantly enhancing HMI and graphics processing capabilities.
Core: Arm Cortex-M4 180 MHz + FPU + ART Accelerator Memory: 1 MB Flash, 256 KB SRAM (incl. 64 KB CCM) LCD-TFT Controller: Up to 1024×768 resolution, parallel RGB interface Chrom-ART Accelerator (DMA2D): Hardware 2D graphic operations, offloading CPU FMC: Supports SRAM, PSRAM, NOR, NAND, and SDRAM for flexible external memory expansion Ethernet MAC: 10/100 Mbit/s, IEEE 1588 PTP hardware support, MII/RMII USB 2.0 OTG: FS + HS, FS on-chip PHY, HS requires external ULPI SDIO + HW Crypto: SD/MMC interface; AES 128/192/256, 3DES, HASH (MD5, SHA-1), True RNG Dual CAN 2.0B: Supports dual industrial bus communication Camera Interface: 8–14-bit parallel DCMI 3×12-bit ADCs: 24 channels, 2.4 MSPS (up to 7.2 MSPS in triple-interleaved mode) 2×12-bit DACs: Buffered output Timers: Up to 17 (2× motor control PWM/deadtime/emergency stop, 12× 16-bit GP/quadrature encoder, 2× basic, 2× watchdogs, SysTick) Communication Interfaces: 4×USART + 2×UART (ISO7816/LIN/IrDA), 3×SPI (30 Mbit/s), 2×I2S, 3×I2C (SMBus), USB OTG, SDIO, Ethernet I/Os: 140, all 5 V-tolerant Low Power: Sleep/Stop/Standby, VBAT backup RTC Package: UFBGA-176 (10×10×0.6 mm)
Industrial: PLCs, inverters, precision motor drives, industrial Ethernet gateways HMI: High-end graphical display panels, industrial touch screens, portable medical devices Motor Control: Dual-motor FOC, servo drives, pumps Image Capture: Simple camera monitoring, barcode scanning, industrial vision Network Communication: Ethernet control nodes, IoT gateways Security Applications: IoT security, payment terminals, data integrity verification Complex Embedded Systems: Compact applications requiring LCD display, graphics acceleration, and multi-peripheral connectivity
LCD-TFT Controller + Chrom-ART: High-resolution display with hardware graphics acceleration for HMI and embedded GUI applications FMC + SDRAM: Expandable large external SDRAM for graphics frame buffer and big data processing 180 MHz Cortex-M4 + FPU: Powerful performance for complex DSP and floating-point operations 1 MB Flash + 256 KB SRAM: Large memory capacity for large firmware and complex algorithms Ethernet + DCMI + Crypto + Dual CAN: Network communication, image capture, data security, and dual industrial bus in a BGA package Hardware Crypto Engine + RNG: AES/3DES/HASH/true random number for data security and integrity Dual DACs + 3 ADCs: Comprehensive analog functions with multi-channel synchronous acquisition 17 Timers (incl. 2 Motor Control): Supports dual-motor FOC Mature STM32 Ecosystem: CubeIDE/CubeMX/HAL/LL
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FAQ:
What is the STM32F429IGH6 and how does it differ from the STM32F429IGT6?
The STM32F429IGH6 is a 180 MHz Cortex‑M4 microcontroller with 1 MB Flash, 256 KB SRAM, Chrom‑ART accelerator, TFT‑LCD controller, and DCMI camera interface. It delivers exactly the same peripherals and memory as the popular IGT6, but in a UFBGA‑176 package instead of LQFP‑176. The BGA package dramatically reduces the PCB footprint (10 × 10 mm vs. 24 × 24 mm), making it the go‑to choice when board space is at an absolute premium.
Why pick the UFBGA‑176 package over the larger LQFP‑176? Is the pin count the same?
Both packages offer 140 I/O ports and identical peripheral connectivity. The UFBGA‑176, however, occupies less than a fifth of the PCB area. This allows much smaller end‑product designs, shorter signal paths, and better EMI performance. The trade‑off is that BGA soldering requires reflow equipment and cannot be hand‑soldered with a standard iron—so it is targeted at professional manufacturing and space‑constrained applications.
How does the STM32F429IGH6 compare with the STM32F429IIT6 and NIH6?
The IGH6 provides 1 MB Flash in a tiny UFBGA‑176; the IIT6 gives 2 MB Flash in LQFP‑176; the NIH6 offers 2 MB Flash in a larger TFBGA‑216 with more I/Os. Choose the IGH6 when 1 MB Flash is sufficient and you need the smallest possible PCB area without sacrificing the full F429 feature set.
Is 1 MB of Flash enough for a complete TouchGFX GUI, RTOS, and Ethernet stack?
Absolutely. A typical project with FreeRTOS, LwIP, TouchGFX, and a curated set of fonts and bitmaps fits comfortably in 1 MB. Many industrial HMIs and portable medical displays ship with 1 MB code footprints. Should your firmware later exceed this limit, the pin‑compatible IIT6 (2 MB, LQFP‑176) offers a drop‑in upgrade path if the BGA was only chosen for size—otherwise, other 2 MB BGA variants exist in the F439 family.
Can the STM32F429IGH6 drive a high‑resolution TFT display and capture camera images simultaneously?
Yes. The TFT‑LCD controller (up to XGA 1024×768) and DCMI camera interface use separate DMA channels, allowing concurrent operation without CPU intervention. The Chrom‑ART accelerator handles pixel blending and colour conversion entirely in hardware, enabling smooth graphics and video even on this compact BGA device.
How is the 256 KB SRAM organised, and what is the best way to use it with external SDRAM?
The SRAM is split into 112 KB general‑purpose, 64 KB CCM, 64 KB DTCM, and 16 KB ITCM. Place time‑critical interrupt handlers in ITCM, the stack and hot data in DTCM, and lookup tables in CCM. The flexible memory controller can drive an external 32‑bit SDRAM for the display frame buffer; the BGA’s compact layout keeps the SDRAM traces short and the signal integrity high.
Is the STM32F429IGH6 suitable for prototyping? How should I start development?
The UFBGA‑176 package is not practical for hand‑soldered prototypes. The recommended workflow is to develop all firmware on a low‑cost Discovery board with an LQFP F429, then retarget to the IGH6 for the final PCB. The same HAL code, TouchGFX project, and CubeMX configuration work directly; only the linker script and pin‑out need adjustment.
What external memory and communication peripherals can be used simultaneously on the IGH6?
With 140 I/Os, you can connect a 32‑bit SDRAM, run Ethernet (RMII or MII), USB high‑speed (ULPI), two CAN 2.0B, multiple UART/SPI/I2C ports, an SD card, and still have pins for the TFT‑LCD and DCMI camera. The BGA’s small size does not reduce the I/O count at all; careful pin planning with STM32CubeMX ensures no conflicts.
What development tools and graphics frameworks support the STM32F429IGH6? Is TouchGFX free?
All mainstream tools—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. TouchGFX is free for STM32 devices and is heavily optimised for the Chrom‑ART accelerator. You can prototype on an LQFP Discovery board and then deploy to the IGH6 by updating the linker script and CubeMX pin assignments.
What are the most typical applications for the STM32F429IGH6?
It is found in ultra‑compact industrial HMI panels, wearable medical devices, drone camera controllers, high‑density avionics displays, and any battery‑powered, space‑constrained product that still requires a rich graphical interface, camera input, and extensive wired connectivity. The tiny BGA footprint makes it possible to embed an F429 in designs where an LQFP‑176 simply would not fit.