STMicroelectronics STM32F439IGT6

Overview

STM32F439IGT6 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), hardware crypto acceleration (AES-128/192/256, SHA-1/2, HMAC), and integrated LCD-TFT controller supporting up to 4096×2048 resolution at 83 MHz pixel clock - deployed in industrial HMI, medical imaging front-ends, and embedded vision gateways.

For engineers reviewing the STM32F439IGT6 datasheet, STM32F439IGT6 pinout, STM32F439IGT6 application, or STM32F439IGT6 equivalent, key selection criteria include LCD-TFT controller capability, dual USB OTG (FS + HS) with dedicated DMA, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, DCMI camera interface (54 MB/s), and cryptographic accelerator co-processor for secure boot and firmware signing.

Technical Context

The STM32F439IGT6 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. It integrates a dedicated LCD-TFT controller (LTDC) with programmable timing, Chrom-ART Accelerator™ (DMA2D) for 2D graphics composition, and dual USB OTG controllers - one full-speed with on-chip PHY, one high-speed with ULPI interface and dedicated DMA channel.

Its memory subsystem includes two-bank flash (enabling read-while-write), 256 KB main SRAM plus 4 KB backup SRAM, and 64 KB CCM RAM accessible only by CPU (no DMA), optimizing real-time interrupt response. The flexible memory controller (FMC) supports SDRAM, NOR, NAND, and PSRAM, while the 17-timer suite includes two 32-bit general-purpose timers running at full 180 MHz with quadrature encoder and PWM generation.

Key Specifications

Pinout & Package

LQFP176 (24 × 24 mm) package with 176 pins, 166 of which are 5 V-tolerant I/Os. Pin functions validated per STMicroelectronics DS9484 Rev 14, Section 4 (Pinouts and pin description).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F437IGT6, the STM32F439IGT6 adds essential display and vision subsystems without sacrificing crypto or connectivity - making it uniquely suited for single-chip HMI and imaging edge nodes. Against the i.MX RT1052, it trades peak CPU speed for tighter integration of analog/video/security peripherals in a lower-power envelope.

Availability

STM32F439IGT6 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging gateways, smart building automation, and embedded vision edge nodes requiring stable component supply throughout extended production lifecycles.

Supply support for STM32F439IGT6 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-grade components since 1987.

The STM32F439xx series belongs to ST's high-performance Cortex-M4 product line, engineered specifically for resource-constrained embedded systems demanding integrated graphics, vision, security, and industrial connectivity - targeting HMI, medical, and IoT edge applications.

FAQ

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

The LTDC controller supports total display widths up to 4096 pixels and heights up to 2048 lines, with pixel clock frequencies up to 83 MHz. This enables native UXGA (1600×1200), WUXGA (1920×1200), and custom high-resolution industrial panels without external timing generators or frame buffers.

Does STM32F439IGT6 support hardware-accelerated AES encryption?

Yes - it includes a dedicated cryptographic processor supporting AES-128/192/256 in ECB/CBC/CTR/GCM modes, plus SHA-1/SHA-224/SHA-256 hashing and HMAC generation. All operations execute in constant time and are accessible via DMA-triggered peripheral interface, enabling secure boot and encrypted firmware updates.

Can the DCMI interface handle raw Bayer data from CMOS image sensors?

Yes - the 8–14-bit parallel DCMI accepts raw Bayer-pattern output synchronized by HSYNC, VSYNC, and PCLK. It supports embedded metadata (e.g., line/frame counters) and can be configured for packed or unpacked pixel formats, feeding directly into DMA buffers for real-time ISP pipeline processing.

Is the STM32F439IGT6 pin-compatible with other STM32F439 variants in LQFP176?

Yes - all STM32F439xx devices in LQFP176 (e.g., STM32F439VGT6, STM32F439ZGT6) share identical pinouts and electrical characteristics. Differences are limited to internal flash/RAM size and factory-programmed options; PCB design is fully reusable across the LQFP176 family members.