STMicroelectronics STM32F429IIH6

Overview

STM32F429IIH6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 MCU with FPU, operating up to 180 MHz (225 DMIPS), featuring 2 MB flash, 256+4 KB SRAM (including 64 KB CCM), integrated LCD-TFT controller supporting up to 4096×2048 resolution at 83 MHz pixel clock, and dual USB OTG (FS + HS) with dedicated DMA. It targets high-resolution embedded HMI systems requiring real-time graphics, industrial control panels, and connected medical displays.

For engineers reviewing the STM32F429IIH6 datasheet, STM32F429IIH6 pinout, STM32F429IIH6 application, or STM32F429IIH6 equivalent, key selection criteria include LCD-TFT controller capability, Chrom-ART Accelerator™ (DMA2D) for hardware-accelerated 2D graphics, dual CAN 2.0B support, IEEE 1588v2 Ethernet MAC, and 168 I/Os with 90 MHz toggle rate and 5 V tolerance on 166 pins.

Technical Context

The STM32F429IIH6 integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash memory, and a dedicated LCD-TFT controller (LTDC) with full programmability for RGB, YUV, and AHB master interfaces. Its memory subsystem includes dual-bank flash for read-while-write operation and 64 KB core-coupled memory (CCM) for time-critical code/data.

It implements two independent USB controllers - one full-speed (OTG_FS) with on-chip PHY, and one high-speed/full-speed (OTG_HS) with ULPI interface and dedicated DMA - alongside a 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping and MII/RMII support. The device also embeds a Chrom-ART Accelerator™ (DMA2D) for hardware-accelerated bitmap blending, image format conversion, and memory-to-memory transfers without CPU load.

Key Specifications

Pinout & Package

STM32F429IIH6 uses a UFBGA176 (10 × 10 mm) package with 0.8 mm ball pitch and ECOPACK2 compliance. Pin functions are validated per ST's DS9405 Rev 13 datasheet Section 4 (Pinouts and pin description) and Table 10 (pin/ball definitions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance ARM Cortex-M4 MCU applications.

Compared with STM32F429IIH6, the STM32F767ZIT6 trades integrated display capability for higher CPU performance and cache, while the STM32H743VIT6 shifts to MIPI DSI and dual-core architecture-making the F429IIH6 optimal for cost-sensitive, single-core TFT-based HMIs needing hardware-accelerated 2D graphics and dual USB/Ethernet concurrency.

Availability

STM32F429IIH6 is available at Aetrix Electronics and suitable for industrial HMI panels, medical imaging displays, smart building gateways, and automotive diagnostic tools requiring stable component supply across multi-year production cycles.

Supply support for STM32F429IIH6 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F4 Series targets high-performance embedded applications demanding real-time processing, rich peripherals, and graphical user interfaces - with the F429 variant specifically optimized for TFT-LCD integration and multimedia acceleration.

FAQ

What is the maximum supported LCD resolution and interface type for STM32F429IIH6?

The STM32F429IIH6 integrates a dedicated LCD-TFT controller (LTDC) supporting resolutions up to 4096×2048 pixels with programmable timing, 24-bit RGB output, and HSYNC/VSYNC/DE/CLK signaling. It natively drives parallel RGB TFT panels without external timing controllers or bridge chips, and supports YUV and AHB master modes for flexible display memory mapping.

Does STM32F429IIH6 support both USB Full-Speed and High-Speed simultaneously?

Yes - STM32F429IIH6 features two independent USB controllers: OTG_FS (with integrated full-speed PHY) and OTG_HS (supporting high-speed via ULPI interface and external PHY). Both operate concurrently with dedicated DMA channels, enabling simultaneous USB device/host roles - e.g., FS mass storage device + HS video streaming endpoint - without resource contention.

How does the Chrom-ART Accelerator™ (DMA2D) improve graphics performance?

The Chrom-ART Accelerator™ (DMA2D) is a hardware 2D graphics engine that performs memory-to-memory transfers, pixel format conversion (e.g., ARGB8888 → RGB565), alpha blending, and raster operations without CPU involvement. This reduces CPU load by up to 70% during UI rendering, enables consistent 60 Hz frame rates on large displays, and eliminates software-rendering bottlenecks in real-time HMI applications.

What are the key power management features relevant for battery-powered applications?

STM32F429IIH6 supports Sleep, Stop, and Standby low-power modes with sub-microamp VBAT retention. In Standby mode, it maintains RTC operation, 20×32-bit backup registers, and optional 4 KB backup SRAM. Wake-up sources include RTC alarm, external pins, and USART activity. The 1.7–3.6 V supply range and internal voltage regulator allow direct Li-ion/LiPo battery integration without external PMIC dependency.