STMicroelectronics STM32F205VGT6TR

Overview

STM32F205VGT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 1 MB 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 and deterministic network timing.

For engineers reviewing the STM32F205VGT6TR datasheet, STM32F205VGT6TR pinout, STM32F205VGT6TR application, or STM32F205VGT6TR equivalent, key selection criteria include Ethernet MAC DMA latency, dual-CAN bus arbitration capability, DCMI camera interface timing (48 MB/s max), ART Accelerator™ zero-wait-state Flash execution, and VBAT-backed RTC with 20 × 32-bit registers.

Technical Context

The device integrates a multi-AHB bus matrix enabling concurrent access to Flash, SRAM, and peripherals without contention; its ART Accelerator™ eliminates Flash wait states at 120 MHz by caching instruction fetches and branch prediction metadata. The embedded Ethernet MAC supports MII/RMII physical layer interfacing and hardware timestamping for IEEE 1588v2 precision time protocol synchronization.

Dual CAN controllers operate independently with full 2.0B Active compliance, supporting simultaneous CAN FD-ready message filtering and transmission scheduling; the DCMI interface accepts 8–14-bit parallel YUV/RGB video streams with programmable polarity, frame synchronization, and embedded sync codes - all synchronized to the same APB2 clock domain as TIM1/TIM8 advanced timers.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; 100-pin square-outline leaded package optimized for industrial PCB assembly and thermal dissipation under sustained Ethernet/CAN traffic loads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F207VGT6, the STM32F205VGT6TR omits the integrated Ethernet PHY but retains identical peripheral count and pin compatibility - ideal for PHY-flexible designs. Versus STM32H743VIT6, it trades raw compute for deterministic real-time I/O handling and DCMI hardware acceleration, better suited for vision-critical industrial nodes.

Availability

STM32F205VGT6TR is available at Aetrix Electronics and suitable for industrial gateways, smart camera nodes, energy meter hubs, and medical data aggregators requiring stable component supply across extended product lifecycles.

Supply support for STM32F205VGT6TR 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 ICs, sensors, and automotive semiconductors since 1987.

The STM32F2 series targets high-performance industrial and connectivity-focused applications, emphasizing real-time determinism, rich peripheral integration (Ethernet, CAN, USB OTG), and robust operation from -40°C to +105°C.

FAQ

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

The STM32F205VGT6TR achieves 120 MHz maximum CPU frequency using the ART Accelerator™, which caches instruction fetches and branch predictions to eliminate Flash wait states. This allows deterministic 0-wait-state execution directly from internal Flash memory, validated across temperature and voltage ranges per DS6329 Rev 18 Section 6.3.1.

Does this MCU support hardware encryption or secure boot?

No - the STM32F205VGT6TR does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. Security relies on software-based implementations or external secure elements; later families like STM32L4+ or STM32H7 add TRNG and AES-256 peripherals for certified secure boot.

Can the Ethernet MAC operate without an external PHY chip?

No - the STM32F205VGT6TR implements only the Ethernet MAC layer with dedicated DMA and IEEE 1588v2 timestamping logic. An external PHY chip (e.g., LAN8720A or DP83848) is required for physical layer signaling, connected via MII or RMII interface pins.

What is the purpose of the VCAP1 and VCAP2 pins?

VCAP1 and VCAP2 connect to external 2.2 µF ceramic capacitors that stabilize the internal voltage regulator's output. These pins supply filtered power to the core logic and must be placed close to the MCU per layout guidelines in DS6329 Section 6.3.2 to prevent reset instability during transient load conditions.