STMicroelectronics STM32F207IGT7

Overview

STM32F207IGT7 from STMicroelectronics is an Arm® Cortex®-M3-based 32-bit microcontroller with 1 MB Flash, 128 + 4 KB SRAM, dual CAN 2.0B interfaces, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, and USB 2.0 HS/FS OTG controller - deployed in industrial gateways requiring deterministic real-time communication, protocol bridging, and embedded web server functionality.

For engineers reviewing the STM32F207IGT7 datasheet, STM32F207IGT7 pinout, STM32F207IGT7 application, or STM32F207IGT7 equivalent, key selection considerations include Ethernet MAC timing compliance, dual-CAN arbitration latency, DCMI camera interface bandwidth (up to 48 MB/s), ART Accelerator™-enabled zero-wait-state Flash execution at 120 MHz, and VBAT-backed RTC with 20 × 32-bit backup registers.

Technical Context

The STM32F207IGT7 integrates a Cortex-M3 core with Memory Protection Unit (MPU), Adaptive Real-Time Accelerator (ART) for deterministic Flash access, and multi-AHB bus matrix enabling concurrent DMA transfers across Ethernet, USB HS, and DCMI peripherals without bus contention.

Its clock system includes dual PLLs - main PLL for CPU/system clocks up to 120 MHz and audio PLL (PLLI2S) for I2S synchronization - while the Ethernet MAC supports MII/RMII physical layer interfaces and hardware timestamping per IEEE 1588v2 for sub-microsecond time synchronization in industrial automation networks.

Key Specifications

Pinout & Package

LQFP176 (24 × 24 mm) package with 176 pins, 5 V-tolerant I/Os (138 pins), and dedicated power/ground distribution optimized for EMI-sensitive Ethernet and high-speed digital interfaces.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F207IGT7, the STM32F407VGT6 trades Ethernet and dual-CAN for FPU-enhanced math performance, while the STM32H743VIT6 offers higher clock speed and memory but removes DCMI - making STM32F207IGT7 uniquely balanced for cost-sensitive industrial gateways requiring both real-time networking and parallel camera support.

Availability

STM32F207IGT7 is available at Aetrix Electronics and suitable for industrial gateways, protocol translation bridges, embedded vision edge nodes, and secure field device controllers requiring stable component supply across extended product lifecycles.

Supply support for STM32F207IGT7 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 automotive-grade components since 1987.

The STM32F2 series targets high-performance industrial applications requiring rich connectivity (Ethernet, USB HS, CAN), real-time determinism, and robust security features - specifically engineered for gateway, motor control, and HMI platforms operating in harsh environments.

FAQ

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

The STM32F207IGT7 achieves a maximum CPU frequency of 120 MHz using its Arm Cortex-M3 core with the Adaptive Real-Time Accelerator (ART Accelerator™). This hardware prefetcher and branch cache eliminates Flash wait states, enabling deterministic zero-wait-state execution even with complex instruction flows. The system clock derives from the main PLL, which accepts input from the 4–26 MHz HSE oscillator or internal 16 MHz RC source, and is validated across the full temperature and voltage range (1.8–3.6 V).

Does the part support hardware encryption or secure boot?

The STM32F207IGT7 does not integrate dedicated hardware cryptographic accelerators (AES, SHA, PKA) or ROM-based secure boot. It relies on software-implemented cryptography and external secure elements for advanced security. However, it provides foundational security features including a 96-bit unique device ID, one-time-programmable (OTP) memory for key storage, MPU-enforced memory protection, and tamper-detect capable RTC backup registers - enabling developers to build certified secure boot chains compliant with IEC 62443 Level 1.

What are the supported Ethernet physical layer interfaces?

The STM32F207IGT7's integrated 10/100 Ethernet MAC supports both MII (Media Independent Interface) and RMII (Reduced MII) physical layer configurations. MII uses 16 signal lines (including TXD0–TXD3, RXD0–RXD3, TX_EN, RX_DV, CRS, COL, REF_CLK) and operates at 25 MHz, while RMII reduces pin count to 7 signals (TXD0/TXD1, TX_EN, RXD0/RXD1, RX_ER, REF_CLK) running at 50 MHz. Both modes are fully supported in ST's HAL and LL drivers, and hardware timestamping for IEEE 1588v2 is available in either configuration.

Can the USB HS interface operate without an external PHY?

No - the STM32F207IGT7 includes an on-chip full-speed PHY for USB FS/OTG but requires an external ULPI-compliant high-speed PHY for USB HS operation. The ULPI interface (12-pin: DATA0–DATA7, CLK, DIR, NXT, STP, REFCLK) connects directly to PHYs such as the USB334x or USB3320. This architecture decouples HS analog design from the MCU die, improving signal integrity and allowing flexible PHY selection based on ESD rating, power consumption, or USB-IF certification requirements.