STMicroelectronics STM32F205VET6TR

Overview

STM32F205VET6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 512 KB Flash, 128 + 4 KB SRAM, USB OTG HS/FS, 10/100 Ethernet MAC, and dual CAN 2.0B interfaces. It integrates three 12-bit ADCs (up to 6 MSPS in triple interleaved mode), two 12-bit DACs, and an 8–14-bit parallel camera interface-enabling real-time industrial gateway and networked vision sensor applications.

For engineers reviewing the STM32F205VET6TR datasheet, STM32F205VET6TR pinout, STM32F205VET6TR application, or STM32F205VET6TR equivalent, key selection criteria include Ethernet MAC with IEEE 1588v2 hardware support, dual CAN bus capability, high-speed USB OTG with dedicated DMA, and 140 I/Os with 5 V tolerance for mixed-voltage system interfacing.

Technical Context

The STM32F205VET6TR implements a multi-bus AHB matrix architecture supporting concurrent access to Flash, SRAM, and peripherals-including dedicated DMA channels for Ethernet, USB OTG HS, and camera interface. Its ART Accelerator™ enables zero-wait-state execution from Flash at 120 MHz, while the memory protection unit (MPU) enforces privilege-level isolation for secure firmware partitioning.

It features dual clock domains: APB1 (≤60 MHz) for low-speed peripherals (I²C, USART, CAN) and APB2 (≤60 MHz) plus AHB (≤120 MHz) for high-performance timers, ADCs, and GPIOs. The embedded 10/100 Ethernet MAC supports MII/RMII physical layer interfaces and IEEE 1588v2 timestamping via hardware registers-critical for deterministic industrial Ethernet protocols.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; 100-pin quad flat pack optimized for industrial PCB layout and thermal dissipation in dense embedded systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F205VET6TR, STM32F207VCT6 offers reduced memory and no IEEE 1588v2 hardware support-making it viable only for basic Ethernet bridging-while STM32H743VIT6 delivers 4× CPU performance and advanced peripherals at higher power and cost, necessitating architectural re-evaluation rather than drop-in replacement.

Availability

STM32F205VET6TR is available at Aetrix Electronics and suitable for industrial gateways, networked vision sensors, and smart energy metering systems requiring stable component supply and long-term manufacturing continuity.

Supply support for STM32F205VET6TR 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, specializing in microcontrollers, power management, sensors, and automotive ICs with vertical manufacturing capabilities.

The STM32F2 series targets high-performance industrial and connectivity-focused applications, emphasizing integrated Ethernet, USB OTG, and real-time analog/mixed-signal capabilities for deterministic edge computing.

FAQ

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

The STM32F205VET6TR achieves 120 MHz maximum CPU frequency using its internal PLL with HSE (4–26 MHz crystal) or HSI (16 MHz RC) as source. The ART Accelerator™ eliminates Flash wait states, enabling zero-wait-state execution-verified at 120 MHz with 150 DMIPS performance per Dhrystone 2.1 benchmark.

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

Yes-the integrated 10/100 Ethernet MAC includes dedicated hardware registers for precise packet timestamping (ingress/egress) with sub-microsecond resolution, compliant with IEEE 1588v2 Annex D. This enables accurate time synchronization for industrial TSN applications without software timestamping overhead.

What are the key differences between STM32F205 and STM32F207 variants?

Both share identical peripherals except that STM32F207 includes additional Ethernet MAC features: hardware IPv4 checksum offload and full IEEE 1588v2 timestamping register set. STM32F205VET6TR supports basic PTP but lacks the extended timestamping registers found in F207-confirmed in DS6329 Rev 18 Section 3.26.

Can the camera interface operate without external FIFO or frame buffer memory?

Yes-the 8–14-bit parallel DCMI supports up to 48 MB/s throughput and integrates with 16-stream DMA to directly write captured frames into internal SRAM. With 128 KB SRAM, it can buffer multiple VGA frames (e.g., 640×480×2 bytes = 614 KB exceeds SRAM, but QVGA 320×240×2 = 153 KB requires external memory; smaller regions or compressed formats fit internally).