STMicroelectronics STM32F439NIH6

Overview

STM32F439NIH6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 MCU with FPU, operating at 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 STM32F439NIH6 datasheet, STM32F439NIH6 pinout, STM32F439NIH6 application, or STM32F439NIH6 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 STM32F439NIH6 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 (enabling read-while-write) and 64 KB core-coupled memory (CCM) for time-critical code/data.

It integrates a dedicated LCD-TFT controller (LTDC) with programmable timing, Chrom-ART Accelerator™ (DMA2D) for 2D graphics composition, and parallel camera interface (DCMI) supporting 54 MB/s throughput - distinguishing it from the STM32F437xx series which lacks LTDC and DMA2D.

Key Specifications

Pinout & Package

STM32F439NIH6 uses a 216-ball TFBGA package (13 × 13 mm, 0.8 mm pitch) with 168 I/Os - 164 fast I/Os rated up to 90 MHz and 166 5 V-tolerant pins. Power supply pins include VDD/VSS (core), VCAP1/VCAP2 (regulator decoupling), and VBAT (RTC backup).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F769NIH6 and STM32H743VIT6, the STM32F439NIH6 uniquely delivers integrated LCD-TFT control with zero external components, making it optimal for cost-sensitive, space-constrained HMI designs requiring native RGB interface and deterministic graphics performance.

Availability

STM32F439NIH6 is available at Aetrix Electronics and suitable for industrial HMIs, medical imaging front-ends, and smart building edge nodes requiring stable component supply, long-term lifecycle assurance, and qualified traceable sourcing.

Supply support for STM32F439NIH6 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, specializing in microcontrollers, power management, and sensor solutions for industrial, automotive, and consumer markets.

The STM32F4-series targets high-performance embedded applications demanding real-time processing, rich connectivity, and graphical user interfaces - with the F439 variant specifically engineered for integrated display control and secure communications.

FAQ

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

The LTDC supports total display dimensions up to 4096 pixels wide and 2048 lines tall, with pixel clock up to 83 MHz. This enables UXGA (1600×1200), WUXGA (1920×1200), and custom high-resolution panels - provided external memory bandwidth (via FMC or SDRAM) meets frame buffer requirements.

Does STM32F439NIH6 support hardware-accelerated SHA-256?

Yes - the cryptographic processor includes dedicated hardware for SHA-224 and SHA-256 hashing, achieving throughput exceeding 15 MB/s. This enables real-time signature verification for secure boot and authenticated firmware updates without CPU overhead.

Can the DCMI interface capture raw Bayer data from CMOS sensors?

Yes - the Digital Camera Interface supports 8-/10-/12-bit parallel input in ITU-R BT.601/656 format and raw Bayer patterns (e.g., from OV5640). It provides embedded synchronization (VSYNC/HSYNC), 54 MB/s bandwidth, and DMA-linked frame buffering for zero-copy image acquisition.

What is the purpose of the VCAP1 and VCAP2 pins?

VCAP1 and VCAP2 connect to 2.2 µF X7R ceramic capacitors that stabilize the internal 1.2 V voltage regulator. These pins must be decoupled within 5 mm of the package; improper placement causes core voltage instability, leading to unpredictable resets or flash corruption during programming.