STMicroelectronics STM32F205VCT6TR

Overview

STM32F205VCT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 256 KB Flash, 64 + 4 KB SRAM, USB OTG HS/FS, 10/100 Ethernet MAC with IEEE 1588 support, and dual CAN 2.0B interfaces. It targets industrial connectivity gateways requiring real-time control, networked I/O, and multi-protocol communication.

For engineers reviewing the STM32F205VCT6TR datasheet, STM32F205VCT6TR pinout, STM32F205VCT6TR application, or STM32F205VCT6TR equivalent, key selection criteria include its 100-pin LQFP package, 120 MHz CPU with ART Accelerator™ enabling zero-wait-state Flash execution, integrated Ethernet MAC with dedicated DMA, and dual CAN bus support for automotive and factory automation systems.

Technical Context

The device integrates a Cortex-M3 core with Memory Protection Unit (MPU), Adaptive Real-time Accelerator (ART) for deterministic Flash access, and a multi-AHB bus matrix enabling concurrent peripheral access. Its clock system includes dual PLLs - main PLL for CPU/system clocks and audio PLL (PLLI2S) for high-fidelity I2S timing.

Peripheral architecture features dedicated DMA channels for Ethernet, USB OTG HS/FS, and SDIO; flexible static memory controller (FSMC) supporting NOR/NAND/PSRAM; and parallel camera interface (DCMI) capable of 48 MB/s throughput. Debug uses SWD/JTAG with Embedded Trace Macrocell™ for cycle-accurate profiling.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad. Pin count: 100 leads; body size: 14.0 mm × 14.0 mm; max height: 1.6 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F205VCT6TR, STM32F407VGT6 trades integrated connectivity for computational headroom, while STM32F207VCT6 extends networking capability without changing footprint - making the F205 optimal for cost-sensitive, connectivity-dense industrial gateways.

Availability

STM32F205VCT6TR is available at Aetrix Electronics and suitable for industrial gateways, smart building controllers, medical data loggers, and networked test equipment requiring stable component supply and long-term manufacturability.

Supply support for STM32F205VCT6TR 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 devices, sensors, and analog ICs 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 control systems requiring Ethernet, USB, and CAN in a single chip.

FAQ

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

The STM32F205VCT6TR achieves 120 MHz CPU operation using its internal main PLL driven by either the HSE (4–26 MHz crystal) or HSI (16 MHz RC). The ART Accelerator™ eliminates Flash wait states at this frequency, enabling deterministic 150 DMIPS performance without external cache or SRAM booting.

Does this MCU support hardware encryption or secure boot?

No - the STM32F205VCT6TR does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. Security relies on software-implemented algorithms and external secure elements; later series (e.g., STM32L5, STM32H5) add TrustZone and crypto peripherals.

Can the Ethernet MAC operate in RMII mode with this part?

Yes - the integrated 10/100 Ethernet MAC supports both MII and RMII physical layer interfaces. RMII mode uses 9 pins (including REF_CLK, CRS_DV, RXD0/1, TXD0/1, TX_EN) and requires an external 50 MHz clock source, reducing PCB complexity versus full MII.

What is the purpose of the VCAP1/VCAP2 pins and what capacitor value is required?

VCAP1 and VCAP2 connect to external 2.2 µF ceramic capacitors (X7R, 10% tolerance) that stabilize the internal voltage regulator's output. These capacitors must be placed within 1 cm of their respective pins and use short, low-inductance traces to prevent startup failure or brownout during high-current transients.