STMicroelectronics STM32F429IEH6

Overview

STM32F429IEH6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 MCU with FPU, operating up to 180 MHz (225 DMIPS), featuring 512 KB 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 Chrom-ART Accelerator™ for hardware-accelerated 2D graphics. It targets high-resolution embedded HMI systems requiring real-time rendering, camera interface (DCMI), and dual CAN/Ethernet connectivity.

For engineers reviewing the STM32F429IEH6 datasheet, STM32F429IEH6 pinout, STM32F429IEH6 application, or STM32F429IEH6 equivalent, key selection considerations include its 17-timer suite (including advanced-control TIM1/TIM8), triple 12-bit ADCs (7.2 MSPS in interleaved mode), USB OTG HS/FS with dedicated DMA, IEEE 1588v2-capable Ethernet MAC, and 168 I/Os with 5 V tolerance - all in a 144-pin LQFP package.

Technical Context

The STM32F429IEH6 implements an Arm Cortex-M4 core with FPU and ART Accelerator™ enabling zero-wait-state execution from flash at 180 MHz. Its memory subsystem includes dual-bank flash (enabling read-while-write), 256 KB main SRAM plus 4 KB backup SRAM, and 64 KB CCM RAM tightly coupled to the CPU for deterministic interrupt latency.

Peripheral architecture integrates a dedicated LCD-TFT controller (LTDC) with full programmability, Chrom-ART Accelerator™ (DMA2D) for bitmap blending and image format conversion, and parallel DCMI supporting 54 MB/s throughput. Connectivity includes two CAN 2.0B controllers, USB OTG HS with ULPI interface and on-chip FS PHY, and 10/100 Ethernet MAC with hardware timestamping per IEEE 1588v2.

Key Specifications

Pinout & Package

LQFP144 package: 20 × 20 mm body, 0.5 mm pitch, exposed thermal pad (EP), RoHS-compliant, ECOPACK2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F429IGT6, the STM32F429IEH6 trades pin count and flash capacity for compact LQFP144 packaging and lower BOM cost-ideal for space-constrained HMIs. Against STM32F746NGH6, it offers proven maturity, lower power at equivalent loads, and full backward compatibility in LCD/DCMI use cases without requiring software rearchitecture.

Availability

STM32F429IEH6 is available at Aetrix Electronics and suitable for industrial HMI displays, medical imaging terminals, smart building gateways, and automotive diagnostic tools requiring stable component supply throughout extended production lifecycles.

Supply support for STM32F429IEH6 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32F4-series targets high-performance embedded applications demanding real-time processing, rich graphics, and multi-protocol connectivity-specifically optimized for human-machine interface, industrial control, and imaging systems.

FAQ

What is the maximum resolution supported by the built-in LCD-TFT controller?

The LTDC controller supports total display resolutions up to 4096 pixels wide and 2048 lines tall, with pixel clock frequencies up to 83 MHz. This enables native support for WXGA (1280×800), SXGA (1280×1024), and HD+ (1600×900) panels using RGB888/666/565 interfaces. Timing parameters are fully programmable per display requirements.

Does STM32F429IEH6 support hardware-accelerated 2D graphics operations?

Yes-it integrates the Chrom-ART Accelerator™ (DMA2D), a dedicated 2D graphics engine that performs ARGB8888/RGB888/RGB565 format conversion, alpha blending, line/pixel copy, and color fill without CPU intervention. This reduces frame buffer update latency by up to 70% compared to software-only rendering.

Can the STM32F429IEH6 interface directly with a parallel CMOS camera sensor?

Yes-the Digital Camera Interface (DCMI) supports 8-/10-/12-bit parallel YUV/RGB input with PCLK, HSYNC, VSYNC, and MCLK signals. It achieves up to 54 MB/s throughput and includes hardware cropping, clipping, and embedded synchronization detection-enabling direct connection to OV5640, MT9V034, and similar sensors without external FIFO.

What are the key power management features for battery-operated designs?

The device supports Sleep, Stop, and Standby low-power modes with current consumption as low as 2.3 µA in Standby with RTC and 20 backup registers active. VBAT supply maintains RTC, backup SRAM, and registers during main power loss. The internal 32 kHz RC oscillator with calibration enables precise low-power timing without external crystal.