STMicroelectronics STM32F429IIH6TR

Overview

STM32F429IIH6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller 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 Chrom-ART Accelerator™ for hardware-accelerated 2D graphics. It targets high-resolution embedded HMI systems requiring real-time display control, camera interface (DCMI), and Ethernet connectivity.

For engineers reviewing the STM32F429IIH6TR datasheet, STM32F429IIH6TR pinout, STM32F429IIH6TR application, or STM32F429IIH6TR equivalent, key selection considerations include its dual USB OTG (FS/HS), 10/100 Ethernet MAC with IEEE 1588v2 support, triple 12-bit ADCs (7.2 MSPS in interleaved mode), and UFBGA176 package with 166 5 V-tolerant I/Os - critical for industrial HMI, medical imaging front-ends, and connected test equipment.

Technical Context

The STM32F429IIH6TR implements an Arm Cortex-M4 core with FPU and Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz. Its memory subsystem includes dual-bank flash (read-while-write), CCM RAM for time-critical code/data, and Flexible Memory Controller (FMC) supporting SDRAM, NOR, and NAND.

It integrates application-specific peripherals including a full-featured LCD-TFT controller (LTDC) with programmable timing, Chrom-ART DMA2D for bitmap blending and format conversion, DCMI interface capable of 54 MB/s throughput, and dual CAN 2.0B controllers - all synchronized via a multi-AHB bus matrix and nested vectored interrupt controller (NVIC) with 240 interrupts.

Key Specifications

Pinout & Package

STM32F429IIH6TR is housed in a 176-ball Ultra-Fine-Pitch Ball Grid Array (UFBGA176) package measuring 10 mm × 10 mm with 0.8 mm ball pitch, optimized for high-density PCB layouts and thermal dissipation in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F767IIK6 and STM32H743IIK6, the STM32F429IIH6TR uniquely balances display integration (LTDC + Chrom-ART), camera acquisition (DCMI), and real-time determinism - making it optimal for cost-sensitive, display-centric industrial and medical devices where peripheral consolidation reduces BOM count and PCB area.

Availability

STM32F429IIH6TR is available at Aetrix Electronics and suitable for industrial HMI panels, medical imaging front-ends, and programmable logic controller gateways requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for STM32F429IIH6TR 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 management ICs, sensors, and automotive semiconductors since 1987.

The STM32F4-series targets high-performance embedded applications demanding real-time processing, rich connectivity, and integrated peripherals - specifically engineered for industrial automation, medical devices, and human-machine interfaces where display, imaging, and deterministic control converge.

FAQ

What is the maximum operating temperature range for STM32F429IIH6TR?

The STM32F429IIH6TR is rated for industrial temperature range: –40 °C to +85 °C ambient. This is validated per ST's DS9405 specification (Section 6.3.1), with thermal derating applied above 70 °C ambient when operating at 180 MHz with full peripheral activation. The UFBGA176 package's θ_JA is 31.5 °C/W, requiring minimum 2-layer PCB with thermal vias under the exposed pad for sustained operation.

Does STM32F429IIH6TR support external SDRAM, and what is the maximum clock rate?

Yes, the Flexible Memory Controller (FMC) supports external SDRAM with up to 16 MB address space and 16-bit data bus. Per Section 3.9 and Table 6.3.26 of DS9405, it operates at up to 90 MHz clock (180 MHz data rate in double-data-rate mode), compatible with standard 64 Mbit/128 Mbit SDRAM parts such as IS42S16400J. Initialization requires precise timing register configuration per JEDEC standards.

How many independent PWM outputs can be generated simultaneously on STM32F429IIH6TR?

The MCU supports up to 36 independent PWM channels: 12 timers (TIM1–TIM5, TIM8–TIM14) each provide up to 4 PWM outputs (CH1–CH4), with TIM1/TIM8 offering complementary outputs and dead-time insertion. All timers run at up to 180 MHz, enabling sub-nanosecond resolution in high-frequency motor control or LED dimming applications - confirmed in Section 3.22 and Table 2 of DS9405.

Is the LCD-TFT controller capable of driving RGB888 panels, and what is the maximum supported pixel clock?

Yes, the LTDC supports RGB888 (24-bit) pixel format with programmable polarity, sync pulse width, and back porch settings. Its maximum pixel clock is 83 MHz (DS9405 Section 3.10), enabling UXGA (1600×1200@60Hz) or WUXGA (1920×1200@60Hz) resolutions. The controller includes two layers with alpha blending, dithering, and CLUT support - eliminating need for external timing generators in most embedded display designs.