STMicroelectronics STM32F205VFT6TR

Overview

STM32F205VFT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 768 KB Flash, 128 + 4 KB SRAM, dual CAN 2.0B interfaces, USB OTG HS/FS with dedicated DMA, and 10/100 Ethernet MAC with IEEE 1588v2 hardware support. It targets industrial connectivity gateways requiring real-time protocol bridging, deterministic Ethernet timing, and multi-interface peripheral management.

For engineers reviewing the STM32F205VFT6TR datasheet, STM32F205VFT6TR pinout, STM32F205VFT6TR application, or STM32F205VFT6TR equivalent, key selection criteria include Ethernet MAC timing compliance, dual-CAN bus arbitration capability, USB HS PHY integration, and 140-pin I/O count with 5 V tolerance - all critical for industrial automation edge nodes and protocol-converged IoT controllers.

Technical Context

The device integrates an Adaptive Real-Time Accelerator (ART Accelerator™) enabling zero-wait-state execution from Flash at 120 MHz, delivering 150 DMIPS performance. Its memory subsystem includes flexible static memory controller (FSMC) supporting NAND/NOR/PSRAM and parallel LCD interface in 8080/6800 modes.

Connectivity architecture features dual-domain clocking: APB1 (36 MHz) for CAN, I²C, and low-speed timers; APB2 (72 MHz) for GPIO, ADC, and high-speed timers; plus dedicated AHB buses for Ethernet DMA, USB OTG HS DMA, and camera interface (DCMI), ensuring concurrent high-bandwidth peripheral operation without bus contention.

Key Specifications

Pinout & Package

LQFP100 package with 100 leads, 0.5 mm pitch, exposed thermal pad, and standard JEDEC MO-137 footprint. Pinout validated per STMicroelectronics DS6329 Rev 18 Section 4 (Pinouts and pin description), Table 8 (STM32F20x pin and ball definitions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F205VFT6TR, STM32F207VCT6 trades IEEE 1588v2 compliance for lower cost in basic Ethernet roles, while STM32H743VIT6 introduces architectural discontinuity - requiring new BSP, power design, and timing validation - making it unsuitable as a drop-in replacement.

Availability

STM32F205VFT6TR is available at Aetrix Electronics and suitable for industrial protocol gateways, embedded vision nodes, smart energy meter hubs, and medical diagnostic interfaces requiring stable component supply across multi-year production cycles.

Supply support for STM32F205VFT6TR 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 was engineered specifically for industrial connectivity applications demanding integrated high-speed interfaces (Ethernet, USB HS, CAN), real-time determinism, and robust peripheral coexistence - targeting factory automation, building management, and infrastructure monitoring systems.

FAQ

What is the maximum operating frequency of the STM32F205VFT6TR?

The STM32F205VFT6TR operates at a maximum CPU frequency of 120 MHz, enabled by its Arm Cortex-M3 core and Adaptive Real-Time Accelerator (ART Accelerator™). This frequency is achievable with zero-wait-state execution from Flash memory, delivering 150 DMIPS performance as measured by Dhrystone 2.1 benchmark. System clock configuration depends on PLL settings and external crystal source (4–26 MHz).

Does the STM32F205VFT6TR support hardware-based IEEE 1588v2 timestamping?

Yes, the STM32F205VFT6TR's integrated 10/100 Ethernet MAC includes dedicated IEEE 1588v2 hardware timestamping logic. It captures precise ingress and egress timestamps for Precision Time Protocol (PTP) packets at the MAC layer, enabling sub-microsecond synchronization accuracy without software overhead. This feature is confirmed in Section 3.26 of the DS6329 datasheet and requires proper PHY configuration and register initialization.

How many 5 V-tolerant I/O pins does the LQFP100 package provide?

The STM32F205VFT6TR in LQFP100 package supports up to 138 5 V-tolerant I/O pins, as specified in the "Features" section of DS6329 Rev 18. These pins tolerate 5 V inputs while operating from a 1.8–3.6 V supply, enabling direct interfacing with legacy 5 V logic, RS-485 transceivers, and industrial sensors without level shifters - subject to correct VDD/VSS decoupling per Section 6.3.16.

Is the USB OTG HS interface fully integrated, or does it require an external PHY?

The USB OTG HS interface requires an external ULPI PHY (e.g., SMSC USB334x or Microchip USB3300), as the STM32F205VFT6TR integrates only the ULPI interface and dedicated DMA controller - not the analog HS PHY. In contrast, the USB OTG FS interface includes a fully integrated on-chip PHY, allowing direct connection to USB connectors without external components. This distinction is documented in Sections 3.28 and 3.29 of DS6329.