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STMicroelectronics STM32F205RCT7TR
- Part No.:
- STM32F205RCT7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F205RCT7TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,324
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Product details
Overview
STM32F205RCT7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 256 KB Flash, 64 + 16 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), two 12-bit DACs, and an 8–14-bit parallel camera interface-targeted for industrial gateways requiring real-time connectivity and multi-interface coexistence.
For engineers reviewing the STM32F205RCT7TR datasheet, STM32F205RCT7TR pinout, STM32F205RCT7TR application, or STM32F205RCT7TR equivalent, key selection criteria include Ethernet+USB OTG HS dual-host capability, 140 I/O count with 5 V tolerance, ART Accelerator™-enabled zero-wait-state Flash execution, and hardware IEEE 1588v2 support for time-sensitive networking.
Technical Context
The device implements a multi-AHB bus matrix architecture enabling concurrent access to Flash, SRAM, and peripherals without contention. Its ART Accelerator™ uses instruction prefetch and branch cache to eliminate Flash wait states at 120 MHz, delivering 150 DMIPS performance.
Clock management includes dual PLLs (main PLL and audio PLLI2S), independent 32 kHz RTC oscillator with calibration, and flexible clock routing supporting simultaneous Ethernet MAC (50 MHz), USB HS (480 MHz), and audio I2S (192 kHz) operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 @ 120 MHz; enables deterministic real-time control with NVIC priority grouping and tail-chaining interrupt handling. |
| Flash Memory | 256 KB; supports read-while-write, sector erase, and hardware ECC for robust firmware updates in field-deployed systems. |
| SRAM | 64 KB main + 16 KB CCM (core-coupled memory); CCM provides zero-wait-state access for critical stack/data in time-critical ISR contexts. |
| Ethernet Interface | 10/100 MAC with dedicated DMA and IEEE 1588v2 hardware timestamping; eliminates CPU overhead for precision time synchronization in industrial automation. |
| USB Support | OTG HS/FS with on-chip full-speed PHY and ULPI interface; enables simultaneous host/device roles and high-bandwidth data streaming (e.g., camera + storage). |
| Analog Peripherals | 3 × 12-bit ADCs (24-channel, 6 MSPS triple interleaved); supports synchronized sampling across motor phases or sensor arrays. |
| Timers | 17 timers including 2 × 32-bit general-purpose and 2 × advanced-control (TIM1/TIM8); delivers PWM generation with dead-time insertion and encoder quadrature decoding. |
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).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.8–3.6 V supply domains with separate analog/digital grounds; requires external 2.2 µF VCAP capacitors for regulator stability. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 138 5 V-tolerant pins; configurable as GPIO, EXTI, or 16+ alternate functions (e.g., USART2_TX on PA2, ETH_MII_RXD0 on PC4). |
| PH0/PH1 | HSE oscillator input/output | Supports 4–26 MHz crystal; essential for Ethernet MAC timing accuracy and USB HS PLL lock stability. |
| PC11/PC12 | USB OTG HS ULPI interface | 8-bit parallel ULPI bus (D0–D7, CLK, DIR, NXT, STP); enables external high-speed PHY integration without USB controller resource contention. |
| PD0/PD1 | USART2 TX/RX | Asynchronous serial interface with LIN break detection and auto-baud rate detection-used for diagnostics and bootloader communication. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables 0-wait-state execution from Flash at 120 MHz, eliminating need for code relocation to RAM in latency-critical control loops. |
| Flexible Static Memory Controller (FSMC) | Supports NOR, PSRAM, NAND, and CompactFlash with programmable timing-enables direct attachment of external displays or legacy industrial memory modules. |
| Dual CAN 2.0B interfaces | Independent CAN FD-capable controllers (software-compatible); used for redundant fieldbus communication or gateway bridging between CAN subnets. |
| Camera Interface (DCMI) | 8–14-bit parallel input up to 48 MB/s; captures raw Bayer or YUV data directly into DMA-accessible memory-ideal for machine vision preprocessing. |
| Embedded Trace Macrocell™ | Real-time instruction trace via SWO pin; allows non-intrusive debugging of timing-critical ISR sequences without halting CPU execution. |
Applications
| Industrial Ethernet Gateway | Multi-Protocol Field Controller |
|---|---|
Use Scenario: Aggregating Modbus TCP, CANopen, and Profibus data across factory floor devices into a unified OPC UA server. IC Role / Device Role / Timing Role: Primary application processor executing protocol stacks, managing dual Ethernet ports (one for upstream cloud, one for local SCADA), and synchronizing CAN timestamps via hardware RTC. Use Value: IEEE 1588v2 hardware timestamping ensures sub-microsecond clock alignment across distributed I/O nodes-critical for coordinated motion control. | Use Scenario: Embedded controller in HVAC chiller plant managing compressor sequencing, valve actuation, and energy metering via multiple serial buses. IC Role / Device Role / Timing Role: Real-time scheduler coordinating 4× UARTs (for BACnet MS/TP, LonWorks, RS-485 sensors), 2× CAN (for valve networks), and SDIO (for local data logging). Use Value: 17 timers with quadrature encoder inputs enable precise RPM monitoring of 8+ motors simultaneously-reducing need for external counter ICs. |
| USB-Camera-Based Inspection System | Secure Firmware Update Node |
Use Scenario: PCB solder-joint inspection using CMOS image sensor interfaced via DCMI, with real-time defect classification on local ARM core. IC Role / Device Role / Timing Role: Image acquisition engine capturing 1280×1024@30 fps via 14-bit DCMI, buffering frames in 16 KB CCM SRAM, and offloading inference to external accelerator. Use Value: 48 MB/s DCMI bandwidth sustains full-resolution capture without frame drops-even under concurrent USB mass-storage streaming to host PC. | Use Scenario: Edge node performing signed firmware validation and secure over-the-air (OTA) updates in medical diagnostic equipment. IC Role / Device Role / Timing Role: Root-of-trust executor verifying ECDSA signatures using embedded RNG and cryptographic accelerators before writing to protected Flash sectors. Use Value: 96-bit unique ID and OTP memory enable device-specific key binding-preventing cloning and enforcing license-based feature activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F207VCT6 | Same core/peripherals but 100-pin LQFP; adds Ethernet PHY interface (MII only, no RMII) and extra 128 KB Flash. | Suitable for designs requiring larger code footprint and direct MII PHY connection instead of external PHY via RMII/ULPI. | Select when board layout accommodates larger package and Ethernet PHY integration simplifies BOM vs. external PHY cost. |
| STM32H743VIT6 | Cortex-M7 core @ 480 MHz, dual-core option, 2 MB Flash, enhanced crypto, but no native USB HS ULPI or DCMI. | Better for AI inference or high-throughput data processing; lacks parallel camera interface and requires external USB HS PHY. | Choose for compute-intensive tasks where camera interface is replaced by MIPI CSI-2 or USB video class streaming. |
Compared with STM32F205RCT7TR, STM32F207VCT6 offers higher Flash density and MII support at the cost of larger footprint, while STM32H743VIT6 trades camera/USB HS peripheral integration for raw CPU throughput and security features-making each optimal for distinct system-level trade-offs.
Availability
STM32F205RCT7TR is available at Aetrix Electronics and suitable for industrial gateways, multi-protocol field controllers, and USB-camera-based inspection systems requiring stable component supply across extended product lifecycles.
Supply support for STM32F205RCT7TR 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, specializing in microcontrollers, power management, and sensing technologies for industrial, automotive, and consumer markets.
The STM32F2 series targets high-performance embedded applications demanding rich connectivity (Ethernet, USB OTG, CAN), real-time analog acquisition, and deterministic execution-designed specifically for industrial control, networking, and imaging edge nodes.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F205RCT7TR achieves 120 MHz maximum CPU frequency using its internal main PLL driven by the HSE (4–26 MHz crystal) or HSI (16 MHz RC). The ART Accelerator™-comprising instruction prefetch and branch cache-eliminates Flash wait states at this speed, enabling sustained 150 DMIPS performance without code relocation to SRAM.
Does this MCU support hardware encryption for secure boot?
No, the STM32F205RCT7TR does not include dedicated cryptographic accelerators (AES, SHA, PKA) or secure key storage. It relies on software libraries for basic encryption. For hardware-accelerated secure boot, ST recommends the STM32L4+, STM32H7, or STM32U5 series, which integrate TRNG, AES-256, and secure firmware install (SFI) features.
Can the Ethernet MAC operate without an external PHY?
No-the STM32F205RCT7TR includes only the Media Access Control (MAC) layer, not a physical layer (PHY). An external 10/100 PHY (e.g., LAN8720A) must be connected via RMII or MII interface. The MCU provides all MAC registers, DMA descriptors, and IEEE 1588v2 timestamp logic, but signal-level line driving and analog transceivers require external components.
What are the power supply requirements for VCAP pins?
The VCAP1 and VCAP2 pins require external 2.2 µF ceramic capacitors (X7R, ±10%, 6.3 V rating) connected to ground. These stabilize the internal voltage regulator output; omission causes boot failure or erratic reset behavior. Capacitors must be placed within 5 mm of their respective VCAP pins with low-inductance traces per ST AN4228 guidelines.
STM32F205RCT7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F2
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 120MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, MMC, SPI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 96K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F205RCT7TR FAQ
1.How can I place an order for STM32F205RCT7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F205RCT7TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F205RCT7TR reliable?
The price and inventory of STM32F205RCT7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205RCT7TR is usually 5 days.
3.What payment methods are accepted for STM32F205RCT7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205RCT7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F205RCT7TR?
STM32F205RCT7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F205RCT7TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F205RCT7TR?
For technical support, including STM32F205RCT7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205RCT7TR requirements.
6.How does Aetrix verify that STM32F205RCT7TR is sourced from the original manufacturer or authorized distributors?
All STM32F205RCT7TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F205RCT7TR meets industry standards.
7.What is the process for return or replacement of STM32F205RCT7TR?
All STM32F205RCT7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205RCT7TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F205RCT7TR part is unused and in its original packaging.
Return procedure for STM32F205RCT7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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