STMicroelectronics STM32F745IEK6

Overview

STM32F745IEK6 from STMicroelectronics is a high-performance ARM Cortex-M7 microcontroller with FPU, delivering 462 DMIPS at 216 MHz. It integrates 1 MB Flash, 320 KB SRAM (including 64 KB data TCM and 16 KB instruction TCM), dual USB OTG (FS/HS), 10/100 Ethernet MAC with IEEE 1588v2 support, LCD-TFT controller up to XGA, and triple 12-bit ADCs (7.2 MSPS interleaved). It targets real-time industrial HMI, networked edge nodes, and embedded vision systems requiring deterministic processing and rich peripheral integration.

For engineers reviewing the STM32F745IEK6 datasheet, STM32F745IEK6 pinout, STM32F745IEK6 application, or STM32F745IEK6 equivalent, key selection considerations include its 216 MHz Cortex-M7 core with L1 cache, dual-mode Quad-SPI, Chrom-ART Accelerator™ for GUI rendering, hardware RTC with subsecond accuracy, and full-speed/high-speed USB + Ethernet coexistence in a single LQFP100 package.

Technical Context

The STM32F745IEK6 implements an adaptive real-time accelerator (ART Accelerator™) enabling zero-wait-state execution from Flash and external memories, paired with 4 KB instruction and 4 KB data caches. Its AXI-AHB bus matrix supports concurrent high-bandwidth access across CPU, DMA, and peripherals including FMC, SDMMC, and DCMI.

It features dual USB controllers (OTG_FS with on-chip PHY and OTG_HS with dedicated DMA and ULPI interface), a 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping, and two independent CAN 2.0B controllers - all operating concurrently without resource contention under the multi-layer AHB/AXI interconnect.

Key Specifications

Pinout & Package

LQFP100 package with exposed thermal pad; 100 leads, 0.5 mm pitch, 14 mm × 14 mm body, JEDEC MS-026AC compliant. Pinout validated per STMicroelectronics DS10916 Rev 5, Section 4 (Pinouts and pin description).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F745IEK6, STM32F746IGT6 expands display capability at the cost of board area, while STM32H743VIT6 delivers double the clock speed and hardware security - making it suitable for next-generation edge AI or safety-certified systems where the F745's 216 MHz and LQFP100 form factor are insufficient.

Availability

STM32F745IEK6 is available at Aetrix Electronics and suitable for industrial HMI, networked gateways, embedded vision sensors, and motor control drives requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F745IEK6 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 STM32F7 series targets high-end embedded applications demanding real-time determinism, rich connectivity, and graphical user interfaces - optimized for deterministic interrupt latency, peripheral concurrency, and energy-efficient performance scaling.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F745IEK6 achieves 216 MHz via its ARM Cortex-M7 core with ART Accelerator™ and dual 4 KB L1 caches (instruction and data). This configuration eliminates wait states during Flash execution and enables sustained 462 DMIPS performance. Stable operation requires proper VCAP1/VCAP2 decoupling (2.2 µF each) and a clean 1.7–3.6 V supply with ≤100 mV ripple.

Does STM32F745IEK6 support hardware encryption or secure boot?

No - the STM32F745IEK6 does not integrate hardware cryptographic accelerators (AES, PKA, HASH) or secure boot ROM. It relies on software-based encryption libraries and external secure elements for trusted execution. For built-in security, consider the STM32H743 or STM32L5 series, which feature TRNG, AES-256, and secure firmware install (SFI) capabilities.

Can the LCD-TFT controller drive a 1024×768 (XGA) display at 60 Hz?

Yes - the integrated LTDC (LCD-TFT Display Controller) supports XGA resolution at 60 Hz with 24-bit RGB interface. It requires external SDRAM for frame buffer storage and benefits from Chrom-ART Accelerator™ for overlay composition and alpha blending. Pixel clock must be configured ≤65 MHz, and timing parameters (HBP, VBP, etc.) must match panel specifications per register settings.

What debug interfaces are supported and what are their limitations?

The STM32F745IEK6 supports SWD (2-pin) and JTAG (5-pin) via dedicated pins (PA13/PA14 for SWDIO/SWCLK; PA15/JTDI, PB3/JTDO, PB4/NJTRST). SWD is recommended for space-constrained designs and offers full debug functionality except for trace. For real-time instruction tracing, the Cortex-M7 Trace Macrocell™ requires SWO pin (PB3 in trace mode) and compatible debugger hardware (e.g., ST-LINK/V2-1 with trace support).