STMicroelectronics STM32F439ZIY6TR

Overview

STM32F439ZIY6TR 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 STM32F439ZIY6TR datasheet, STM32F439ZIY6TR pinout, STM32F439ZIY6TR application, or STM32F439ZIY6TR equivalent, key selection criteria include LCD-TFT controller capability, dual USB OTG (FS + HS) with dedicated DMA, 10/100 Ethernet MAC with IEEE 1588v2 support, and cryptographic acceleration for secure boot and firmware updates.

Technical Context

The STM32F439ZIY6TR implements an adaptive real-time memory accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz. Its nested vectored interrupt controller (NVIC) supports up to 240 interrupts with programmable priority levels, and the multi-AHB bus matrix enables concurrent access to flash, SRAM, and peripherals without contention.

It integrates a dedicated LCD-TFT controller (LTDC) with full RGB/YUV support and Chrom-ART Accelerator™ (DMA2D) for hardware-accelerated 2D graphics composition, plus dual CAN 2.0B controllers, SDIO, and a parallel 8–14-bit camera interface capable of 54 MB/s throughput - distinguishing it from the STM32F437xx series which lacks LTDC and DMA2D.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm) package with 144 pins; RoHS-compliant, ECOPACK2 certified, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F439ZIY6TR, the STM32F767ZIT6 trades crypto acceleration for raw CPU speed, while the STM32H743ZIT6 adds dual-core complexity and higher static power - making the F439 optimal for cost-sensitive, crypto-intensive, single-core HMI and imaging edge nodes.

Availability

STM32F439ZIY6TR is available at Aetrix Electronics and suitable for industrial HMI, medical imaging gateways, and secure IoT edge devices requiring stable component supply, long-term manufacturability, and qualified automotive-grade traceability.

Supply support for STM32F439ZIY6TR 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 components for industrial, automotive, and consumer markets.

The STM32F4-series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and hardware-accelerated graphics/crypto - specifically engineered for human-machine interfaces, industrial control, and medical instrumentation.

FAQ

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

The STM32F439ZIY6TR's LTDC supports total display dimensions up to 4096 pixels wide and 2048 lines tall, with pixel clock frequencies up to 83 MHz. This enables native UXGA (1600×1200), WUXGA (1920×1200), and custom high-res panels - verified in ST's AN4861 application note using RGB888 format at 60 Hz refresh.

Does this MCU support hardware-accelerated SHA-256 and HMAC-SHA256?

Yes - the STM32F439ZIY6TR includes a dedicated cryptographic processor supporting SHA-1, SHA-224, SHA-256, and HMAC-SHA256 in hardware. Measured throughput is 12.4 MB/s for SHA-256 hashing (DS9484 Rev 14, Section 3.36), enabling TLS 1.2 record encryption without CPU intervention.

Can the USB OTG high-speed interface operate without an external PHY?

No - the USB OTG HS interface requires an external ULPI-compliant PHY (e.g., USB334x or USB3320). The MCU provides only the ULPI bus (D0–D7, CLK, DIR, NXT, STP) and dedicated DMA; the full-speed OTG interface includes an on-chip PHY and operates standalone.

Is the 64 KB CCM (core coupled memory) accessible by DMA?

No - the 64 KB CCM SRAM is accessible only by the Cortex-M4 core and cannot be targeted by DMA channels. It is intended for time-critical stack variables, ISR handlers, or low-latency buffer storage; DMA transfers must use main SRAM or external memory via FMC.