STMicroelectronics STM32F207IET6

Overview

STM32F207IET6 from STMicroelectronics is an Arm® Cortex®-M3 based 32-bit microcontroller with 512 KB Flash, 128+4 KB SRAM, dual CAN 2.0B interfaces, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, and USB OTG HS/FS controllers - deployed in industrial gateways requiring real-time protocol bridging, secure firmware updates, and deterministic network timing.

For engineers reviewing the STM32F207IET6 datasheet, STM32F207IET6 pinout, STM32F207IET6 application, or STM32F207IET6 equivalent, key selection criteria include Ethernet MAC + IEEE 1588v2 hardware timestamping capability, dual-CAN bus arbitration for automotive diagnostics, camera interface (DCMI) bandwidth up to 48 MB/s, and ART Accelerator™ enabling zero-wait-state execution at 120 MHz from Flash memory.

Technical Context

The STM32F207IET6 integrates a Cortex-M3 core with Adaptive Real-Time Accelerator (ART Accelerator™), enabling deterministic 120 MHz operation from Flash without wait states and delivering 150 DMIPS performance. Its multi-AHB bus matrix supports concurrent access to Flash, SRAM, and peripherals including Ethernet MAC and USB OTG HS.

It features a dedicated Ethernet MAC with MII/RMII interfaces, hardware IEEE 1588v2 timestamping, and integrated DMA - enabling precise time-synchronized packet handling. The dual CAN 2.0B controllers operate independently with full message filtering and FIFO buffering, supporting J1939 and CANopen stack implementations.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with 138 5 V-tolerant I/Os, 136 fast I/Os up to 60 MHz, and dedicated pins for Ethernet MII/RMII, dual CAN, USB ULPI, and DCMI.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F207IET6, STM32F407VGT6 trades IEEE 1588v2 hardware accuracy for FPU-enabled signal processing, while STM32H743VIT6 delivers higher throughput but sacrifices DCMI - making STM32F207IET6 uniquely balanced for time-sensitive imaging + networking applications.

Availability

STM32F207IET6 is available at Aetrix Electronics and suitable for industrial gateways, automotive diagnostic tools, smart camera modules, and secure firmware update nodes requiring stable component supply across extended product lifecycles.

Supply support for STM32F207IET6 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 analog devices for industrial, automotive, and consumer markets.

The STM32F2 series targets high-performance, connectivity-rich embedded applications - specifically engineered for industrial automation, networking infrastructure, and real-time multimedia systems requiring Ethernet, CAN, USB, and camera interfaces in a single chip.

FAQ

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

The STM32F207IET6 achieves 120 MHz maximum CPU frequency using its internal PLL with input from either the 4–26 MHz external crystal oscillator or the 16 MHz internal RC oscillator. The ART Accelerator™ eliminates Flash wait states, enabling zero-wait-state execution at full speed - verified by Dhrystone 2.1 benchmark yielding 150 DMIPS (1.25 DMIPS/MHz).

Does this MCU support hardware-based IEEE 1588v2 timestamping?

Yes. The integrated 10/100 Ethernet MAC includes dedicated hardware timestamping logic compliant with IEEE 1588v2 Annex D. It captures precise transmit/receive timestamps at the PHY boundary with sub-microsecond resolution - critical for time-sensitive networking (TSN) and industrial synchronization without external timestamping ICs.

How many CAN interfaces does the STM32F207IET6 have, and are they fully independent?

The STM32F207IET6 integrates two fully independent CAN 2.0B controllers (CAN1 and CAN2), each with its own message RAM, 28 filter banks, and dedicated TX/RX pins. They operate concurrently with separate interrupt vectors and can be configured for different bit rates, making them suitable for J1939 diagnostics and CANopen master/slave roles simultaneously.

Is the DCMI interface capable of handling high-resolution video streams?

Yes. The 8–14-bit parallel Digital Camera Interface (DCMI) supports up to 48 MB/s throughput - sufficient for 720p (1280×720) video at 30 fps with 16-bit RGB565 format. It includes hardware synchronization (VSYNC/HSYNC/PCLK), embedded FIFO, and automatic DMA triggering per frame - offloading CPU bandwidth and ensuring deterministic capture timing.