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STMicroelectronics STM32F745IET6

Name: STM32F745IET6
Brand: STMicroelectronics
SKU: STM32F745IET6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32F745IET6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 176-LQFP

Datasheet:: STM32F745IET6.pdf

Description:: IC MCU 32BIT 512KB FLASH 176LQFP

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Product details

Overview

STM32F745IET6 from STMicroelectronics is a high-performance ARM® Cortex®-M7 32-bit microcontroller with FPU, operating at up to 216 MHz (462 DMIPS), featuring 1 MB Flash, 320 KB + 16 KB + 4 KB SRAM, USB OTG HS/FS, 10/100 Ethernet MAC, and dual CAN 2.0B interfaces. It integrates LCD-TFT controller (XGA), Chrom-ART Accelerator™, dual Quad-SPI, and parallel camera interface - deployed in industrial HMI, medical imaging front-ends, and real-time motor control systems.

For engineers reviewing the STM32F745IET6 datasheet, STM32F745IET6 pinout, STM32F745IET6 application, or STM32F745IET6 equivalent, key selection criteria include its 216 MHz Cortex-M7 core with L1 cache, dual USB OTG (FS + HS), IEEE 1588v2 Ethernet support, triple 12-bit ADCs (7.2 MSPS interleaved), and TFBGA100 package compatibility with thermal and routing constraints for high-density PCBs.

Technical Context

The STM32F745IET6 implements an adaptive real-time accelerator (ART Accelerator™) with 4 KB instruction and 4 KB data caches, enabling zero-wait-state execution from Flash or external memory. Its AXI-AHB bus matrix supports concurrent high-bandwidth access across CPU, DMA2D, Ethernet MAC, and FMC.

It features dual USB OTG controllers (one full-speed with on-chip PHY, one high-speed with ULPI support), a 10/100 Ethernet MAC with dedicated DMA and hardware IEEE 1588v2 timestamping, and two independent CAN 2.0B controllers - all operating concurrently under deterministic NVIC priority management.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	ARM Cortex-M7 with FPU, 216 MHz max, 462 DMIPS @ 2.14 DMIPS/MHz - enables real-time signal processing and multitasking without external co-processors.
Memory	1 MB Flash + 320 KB SRAM (data TCM) + 16 KB SRAM (instruction TCM) + 4 KB backup SRAM - supports large firmware images, real-time buffers, and RTC-persistent data storage.
ADC	Three 12-bit ADCs, 2.4 MSPS each, 7.2 MSPS in triple interleaved mode - sufficient for simultaneous sampling of motor phase currents, voltage rails, and temperature sensors.
Connectivity	2× CAN 2.0B, 1× 10/100 Ethernet MAC (MII/RMII), 4× USART, 6× SPI, 4× I²C, 2× SAI, SPDIFRX, HDMI-CEC - enables multi-protocol industrial fieldbus integration and audio/video edge processing.
Graphics & Imaging	LCD-TFT controller (XGA), Chrom-ART Accelerator™ (DMA2D), 8–14-bit parallel DCMI (54 MB/s) - allows direct drive of color displays and hardware-accelerated UI rendering without CPU load.
Package	TFBGA100 (8 × 8 mm, 0.8 mm pitch) - compact footprint with 100 I/Os, 166 5 V-tolerant pins, and thermal performance suitable for convection-cooled industrial modules.
Clock System	4–26 MHz HSE oscillator, 32 kHz LSE for RTC, internal 16 MHz RC (±1%), audio PLL (PLLI2S), and LCD PLL (PLLSAI) - supports precise timing for Ethernet, audio, and display synchronization.

Pinout & Package

STM32F745IET6 uses a 100-ball Thin Fine-Pitch Ball Grid Array (TFBGA100) package with 0.8 mm pitch, 8 × 8 mm body, and standard JEDEC MO-277A footprint. Pin assignments follow ST's documented ball map for STM32F745xx series, with VDD/VSS power distribution optimized for low-noise analog and high-speed digital domains.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA, VDDUSB	Power supply inputs	Dedicated 1.7–3.6 V supplies for digital core, analog subsystem, and USB PHY - require separate decoupling to meet noise immunity specs.
VSS, VSSA, VBUS	GND and USB detection	Separate digital/analog ground planes; VBUS monitors USB host presence for OTG role negotiation.
PA0–PA15, PB0–PB15, etc.	General-purpose I/O	Up to 166 5 V-tolerant pins; many support multiple alternate functions including ETH, CAN, USB, DCMI, and LCD signals.
PH0/PH1	HSE oscillator input/output	4–26 MHz crystal connection; critical for Ethernet MAC timing accuracy and system clock stability.
PC1, PC4–PC5	Ethernet MAC interface	MII/RMII signals (TXD0–3, RXD0–3, TX_EN, CRS_DV, REF_CLK) - require controlled impedance routing per IEEE 802.3.
PD0–PD7, PE0–PE11	LCD-TFT data/control bus	8080/6800 mode parallel interface supporting up to XGA (1024×768) resolution with hardware pixel blending via DMA2D.

Key Features

Feature	Design Value
ART Accelerator™ + L1 cache	Enables zero-wait-state execution from Flash at 216 MHz - eliminates code relocation to RAM for deterministic real-time response.
Chrom-ART Accelerator™ (DMA2D)	Hardware-accelerated 2D graphics operations (copy, blend, fill) - reduces CPU load by >90% in GUI rendering versus software-only implementations.
Dual USB OTG controllers	Independent FS (on-chip PHY) and HS (ULPI-capable) paths - allows simultaneous device/host roles, e.g., USB mass storage + USB HID + Ethernet bridging.
IEEE 1588v2 hardware timestamping	Sub-microsecond precision time-stamping in Ethernet MAC - essential for synchronized motion control and industrial time-sensitive networking (TSN).
Triple interleaved ADC	7.2 MSPS aggregate sampling rate across three 12-bit ADCs - captures fast transients in multi-axis motor drives or power quality analyzers.

Applications

Industrial HMI Panels

Medical Imaging Front-Ends

Use Scenario: Touch-enabled color display panels in PLC cabinets and factory-floor operator stations.

IC Role / Device Role / Timing Role: Primary application processor managing TFT LCD (XGA), capacitive touch controller, Ethernet backhaul, and local CAN bus diagnostics.

Use Value: Integrated Chrom-ART Accelerator™ renders smooth animations at 60 fps while CPU handles protocol stacks - no external GPU required.

Use Scenario: Portable ultrasound or endoscopy devices requiring real-time image capture and display.

IC Role / Device Role / Timing Role: Image acquisition hub interfacing CMOS sensor (DCMI), performing real-time histogram equalization (via DMA2D), and driving LVDS display interface.

Use Value: Parallel DCMI (54 MB/s) and hardware DMA2D enable 30 fps HD video pipeline with <50 µs latency from sensor to screen.

Multi-Protocol Industrial Gateways

High-Performance Motor Drives

Use Scenario: Edge gateway consolidating Modbus TCP, CANopen, and EtherCAT fieldbus traffic into cloud-uplink Ethernet.

IC Role / Device Role / Timing Role: Dual-CAN + Ethernet MAC + multiple UARTs/USARTs serve as protocol translation engine with deterministic packet scheduling.

Use Value: Hardware IEEE 1588v2 timestamping synchronizes distributed drives across CAN/Ethernet - eliminates need for external PTP grandmaster.

Use Scenario: Servo drives with field-oriented control (FOC), current sensing, and position feedback.

IC Role / Device Role / Timing Role: Real-time controller executing FOC loop at 20 kHz using triple interleaved ADCs, PWM timers, and encoder quadrature inputs.

Use Value: 13x 16-bit timers running at 216 MHz provide sub-100 ns PWM resolution and precise dead-time insertion for IGBT gate drivers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32F746IGT6	Same core, peripherals, and package; adds embedded Chrom-ART Accelerator™-enhanced LCD-TFT controller with RGB interface and LTDC layer blending.	Better suited for RGB display systems requiring alpha blending and overlay layers; lacks DCMI in some variants.	Select when RGB panel interface and advanced UI compositing outweigh need for parallel camera input.
STM32H743VIT6	Dual-core (Cortex-M7 + Cortex-M4), higher clock (480 MHz), double Flash/SRAM, enhanced crypto, but larger LQFP100 package and no native DCMI.	Targeted at security-critical or ultra-high-throughput applications (e.g., encrypted edge AI inference); requires redesign for camera or legacy display interfaces.	Choose only if dual-core isolation, AES/HASH accelerators, or >216 MHz compute throughput are mandatory - not a drop-in replacement.

Compared with STM32F746IGT6, the STM32F745IET6 offers superior DCMI bandwidth and identical TFBGA100 footprint for space-constrained imaging designs; versus STM32H743VIT6, it provides better analog integration (triple ADC, DAC) and lower BOM cost for single-core deterministic control with camera+display co-processing.

Availability

STM32F745IET6 is available at Aetrix Electronics and suitable for industrial HMIs, medical imaging front-ends, and high-performance motor control systems requiring stable component supply, long-term lifecycle assurance, and qualified sourcing traceability.

Supply support for STM32F745IET6 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, sensors, and automotive ICs - serving industrial, automotive, and consumer markets since 1987.

The STM32F7 series targets high-end real-time embedded applications demanding both computational performance and rich peripheral integration - designed specifically for deterministic control, graphics-rich UIs, and multi-protocol connectivity in resource-constrained environments.

FAQ

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

The STM32F745IET6 achieves 216 MHz via its ARM Cortex-M7 core with ART Accelerator™ and 4 KB instruction/data caches. This enables zero-wait-state execution from Flash or external memory. The maximum frequency requires proper VDD supply (≥2.7 V), correct HSE/LSE configuration, and clock tree setup per RM0385 reference manual Section 6.2.3.

Does STM32F745IET6 support hardware encryption or secure boot?

No - unlike the STM32H7 or STM32L5 series, the STM32F745IET6 does not integrate cryptographic accelerators (AES, HASH, PKA) or tamper-detection circuitry. Secure boot must be implemented in software using external secure elements or bootloader validation against signed firmware images stored in protected Flash sectors.

Can the Ethernet MAC operate in RMII mode with this package?

Yes - the TFBGA100 package exposes all required RMII signals (REF_CLK, CRS_DV, RXD0/1, TXD0/1, TX_EN) on dedicated balls (e.g., PA1, PA2, PB11–PB13, PC1, PC4–PC5). RMII mode reduces pin count vs MII and is fully supported in HAL and CubeMX with PHY initialization via MDIO/MDC.

What is the purpose of the 4 KB backup SRAM and how is it powered?

The 4 KB backup SRAM retains data during Standby and VBAT modes using the VBAT supply (1.65–3.6 V). It is accessible only when VDD is off and VBAT is present, and supports 32×32-bit backup registers. Data integrity is maintained across power cycles, making it ideal for storing calibration coefficients or last-known operational states.

STM32F745IET6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 176-LQFP

Series:: STM32F7

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M7

Core Size:: 32-Bit Single-Core

Speed:: 216MHz

Connectivity:: CANbus, EBI/EMI, Ethernet, I2C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB OTG

Peripherals:: Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

Number of I/O:: 140

Program Memory Size:: 512KB (512K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 320K x 8

Voltage - Supply (Vcc/Vdd):: 1.7V ~ 3.6V

Data Converters:: A/D 24x12b; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32F745IET6 FAQ

1.How can I place an order for STM32F745IET6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32F745IET6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32F745IET6 reliable?

The price and inventory of STM32F745IET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F745IET6 is usually 5 days.

3.What payment methods are accepted for STM32F745IET6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F745IET6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32F745IET6?

STM32F745IET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32F745IET6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32F745IET6?

For technical support, including STM32F745IET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F745IET6 requirements.

6.How does Aetrix verify that STM32F745IET6 is sourced from the original manufacturer or authorized distributors?

All STM32F745IET6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F745IET6 meets industry standards.

7.What is the process for return or replacement of STM32F745IET6?

All STM32F745IET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F745IET6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32F745IET6 part is unused and in its original packaging.

Return procedure for STM32F745IET6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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