STMicroelectronics STM32F205RGT6TR

Overview

STM32F205RGT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 1 MB Flash, 128 + 4 KB SRAM, USB OTG HS/FS, 10/100 Ethernet MAC, and dual CAN 2.0B interfaces. It targets industrial gateways, motor control systems, and networked embedded devices requiring real-time processing, connectivity, and analog signal acquisition.

For engineers reviewing the STM32F205RGT6TR datasheet, STM32F205RGT6TR pinout, STM32F205RGT6TR application, or STM32F205RGT6TR equivalent, key selection criteria include its 64-pin LQFP package, 120 MHz CPU with ART Accelerator™ enabling zero-wait-state Flash execution, triple 12-bit ADCs (6 MSPS in interleaved mode), Ethernet MAC with IEEE 1588v2 hardware support, and dual CAN controllers for robust fieldbus integration.

Technical Context

The device implements a multi-AHB bus matrix architecture supporting concurrent access to Flash, SRAM, and peripherals, with a dedicated DMA controller (16-stream, centralized FIFOs) enabling high-throughput data movement without CPU intervention. Its clock system integrates multiple oscillators - 4–26 MHz HSE, 32 kHz LSE for RTC, and factory-trimmed 16 MHz HSI - plus main PLL and audio PLL (PLLI2S) for precise frequency synthesis across domains.

Peripheral subsystems are partitioned across APB1 (low-speed: timers, I²C, CAN, USB FS) and APB2 (high-speed: GPIO, USART, SPI, ADC, TIM1/TIM8) buses, with advanced timer features including quadrature encoder input, PWM generation, and complementary outputs with dead-time insertion - critical for motor control and power conversion.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and STM32H743ZIT6, the STM32F205RGT6TR uniquely balances real-time determinism, integrated Ethernet with IEEE 1588v2 hardware, and dual CAN - making it optimal for time-sensitive industrial networking where hardware timestamping and fieldbus coexistence are non-negotiable.

Availability

STM32F205RGT6TR is available at Aetrix Electronics and suitable for industrial gateways, motor control systems, and networked medical devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production programs.

Supply support for STM32F205RGT6TR 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 for industrial, automotive, and consumer markets.

The STM32F2 series was engineered specifically for industrial connectivity applications demanding integrated high-speed interfaces (Ethernet, USB OTG HS, CAN), real-time analog acquisition, and deterministic execution - bridging the gap between basic MCUs and application processors.

FAQ

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

The STM32F205RGT6TR achieves a maximum CPU frequency of 120 MHz using its internal main PLL, which multiplies the input clock (from HSE or HSI). The Adaptive Real-time Accelerator™ (ART Accelerator™) eliminates Flash wait states at this speed, enabling deterministic zero-wait-state execution. This requires proper VCAP capacitor placement and stable 1.8–3.6 V supply with adequate decoupling.

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

Yes, the integrated 10/100 Ethernet MAC includes dedicated hardware for IEEE 1588v2 timestamping, allowing precise sub-microsecond synchronization without CPU intervention. This is confirmed in Section 3.26 of the DS6329 datasheet and enables use in Time-Sensitive Networking (TSN) and industrial Ethernet protocols like PROFINET IRT.

How many ADC channels are available and what is their maximum aggregate sampling rate?

The device integrates three independent 12-bit ADCs with up to 24 total channels. In triple interleaved mode, they achieve up to 6 MSPS aggregate sampling rate with 0.5 µs conversion time per sample. Each ADC supports hardware triggers from timers or external events, enabling synchronized multi-channel acquisition for motor current sensing or power quality monitoring.

What are the key differences between STM32F205RGT6TR and STM32F207VGT6?

The STM32F207VGT6 adds a second Ethernet MAC port and increases GPIO count (up to 140 vs. 51 in RGT6), but shares identical CPU, memory, USB, CAN, and peripheral specs. The RGT6 variant uses LQFP64 packaging optimized for space-constrained designs where single Ethernet and moderate I/O suffice - reducing BOM cost and PCB area without sacrificing core connectivity or real-time capability.