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STMicroelectronics STM32F205RET7TR
- Part No.:
- STM32F205RET7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F205RET7TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,117
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Product details
Overview
STM32F205RET7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 512 KB Flash, 128 + 4 KB SRAM, dual CAN 2.0B interfaces, USB OTG HS/FS with dedicated DMA, and 10/100 Ethernet MAC with IEEE 1588v2 hardware support. It targets industrial connectivity gateways requiring real-time protocol stacking, deterministic Ethernet timing, and multi-interface coexistence.
For engineers reviewing the STM32F205RET7TR datasheet, STM32F205RET7TR pinout, STM32F205RET7TR application, or STM32F205RET7TR equivalent, key selection criteria include its integrated Ethernet MAC with hardware timestamping, dual-CAN bus arbitration capability, 120 MHz ART-accelerated Flash execution, and LQFP64 package compatibility with legacy STM32F1/F2 footprint constraints.
Technical Context
The device integrates a Cortex-M3 core with Adaptive Real-Time Accelerator (ART™) enabling zero-wait-state execution from Flash at 120 MHz, and includes a multi-AHB bus matrix for concurrent access to Flash, SRAM, and peripherals. Its memory protection unit (MPU) supports secure task isolation in RTOS environments.
Peripheral architecture features dual-domain clocking (APB1/APB2), dedicated DMA channels for Ethernet, USB OTG HS, and DCMI, plus flexible alternate function mapping across 140 I/Os - including 138 5 V-tolerant pins and 136 fast I/Os rated to 60 MHz - enabling mixed-voltage system interfacing without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 @ 120 MHz max; ART Accelerator enables 0-wait-state Flash execution, delivering 150 DMIPS performance. |
| Memory | 512 KB Flash + 512 B OTP + 128 KB main SRAM + 4 KB CCM SRAM; CCM RAM is CPU-access-only, ideal for critical ISR code/data. |
| Connectivity | Dual CAN 2.0B controllers, USB 2.0 HS/FS OTG with ULPI interface and on-chip PHY, 10/100 Ethernet MAC with MII/RMII and IEEE 1588v2 hardware timestamping. |
| Analog Peripherals | Three 12-bit ADCs (up to 24 channels, 6 MSPS triple-interleaved), two 12-bit DACs, temperature sensor, and VBAT monitoring. |
| Timers & Control | Up to 17 timers: twelve 16-bit + two 32-bit general-purpose, two advanced-control (TIM1/TIM8), plus SysTick, watchdogs, and RTC with calibration. |
| I/O & Packaging | 140 I/Os (138 5 V-tolerant, 136 up to 60 MHz); LQFP64 (10 × 10 mm, 0.5 mm pitch) with full pin compatibility across STM32F205xx RETx variants. |
Pinout & Package
LQFP64 package: 10 × 10 mm body, 0.5 mm pitch, 64 leads, exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Core & I/O power domains (1.8–3.6 V); separate VDDA/VSSA for analog circuitry ensures noise immunity for ADC/DAC operation. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 140 total GPIOs with interrupt capability; 5 V-tolerant inputs allow direct interfacing with legacy 5 V logic without external buffers. |
| PA11/PA12 | USB FS D+/D− | Dedicated full-speed USB transceiver pins with internal pull-ups; no external PHY required for FS mode. |
| PA13/PA14/PA15 | SWDIO/SWCLK/NRST | Serial Wire Debug interface; NRST is active-low reset with internal pull-up, compatible with standard ST-LINK debuggers. |
| PC1/PC4/PC5 | ETH_MDC/ETH_MDIO/ETH_CRS_DV | Ethernet MAC control and status signals; RMII mode requires only 7 pins (vs. 16 for MII), reducing PCB routing complexity. |
| PB8/PB9 | CAN1_RX/CAN1_TX | Dual CAN controllers share no pins; CAN1 uses PB8/PB9, CAN2 uses PB12/PB13 - enabling independent bus operation. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Eliminates Flash wait states at 120 MHz, enabling deterministic real-time code execution without SRAM shadowing. |
| Flexible Static Memory Controller (FSMC) | Supports NOR, PSRAM, NAND, and CompactFlash with programmable timing - enables direct attachment of external displays or memory-mapped peripherals. |
| Dual CAN 2.0B Controllers | Independent message RAM, filtering, and TX/RX FIFOs per controller - essential for gateway applications bridging multiple CAN networks. |
| IEEE 1588v2 Hardware Timestamping | Sub-microsecond precision timestamping in Ethernet MAC; offloads time-critical PTP processing from CPU, reducing jitter in industrial automation. |
| CCM SRAM (4 KB) | CPU-only accessible memory block; used for time-critical ISR stacks or real-time data buffers without cache coherency overhead. |
Applications
| Industrial Ethernet Gateway | Multi-Protocol Field Controller |
|---|---|
Use Scenario: Aggregating Modbus TCP, EtherNet/IP, and PROFINET traffic across factory floor devices using a single MCU. IC Role / Device Role / Timing Role: Central protocol stack executor with hardware-accelerated Ethernet MAC and dual CAN for fieldbus bridging. Use Value: IEEE 1588v2 timestamping enables synchronized motion control across distributed drives without external timing hardware. |
Use Scenario: Controlling hydraulic valves, pressure sensors, and motor drives in mobile machinery with CAN FD upgrade path. IC Role / Device Role / Timing Role: Real-time I/O manager with deterministic timer-triggered ADC sampling and PWM generation. Use Value: Triple-interleaved ADC achieves 6 MSPS aggregate throughput for high-fidelity sensor fusion in closed-loop control. |
| Secure IoT Edge Node | Human-Machine Interface (HMI) Terminal |
Use Scenario: Remote asset monitoring node with encrypted TLS communication over Ethernet and local CAN diagnostics. IC Role / Device Role / Timing Role: Secure boot initiator with 96-bit unique ID and embedded RNG for key derivation. Use Value: OTP memory stores cryptographic keys and device identity; CCM SRAM isolates sensitive crypto operations from general firmware. |
Use Scenario: Touch-enabled panel PC with parallel LCD interface and camera input for QR/barcode scanning. IC Role / Device Role / Timing Role: Display controller with 8080/6800 interface and 8–14-bit DCMI for real-time image capture. Use Value: Parallel camera interface supports 48 MB/s throughput - sufficient for VGA@30fps raw Bayer data streaming to SRAM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F207VCT6 | LQFP100 package, 256 KB Flash, adds USB HS PHY (no ULPI required), same peripheral set except adds second Ethernet MAC. | Suitable for designs needing higher pin count, larger Flash, or dual-Ethernet redundancy - not drop-in compatible due to package and pinout change. | Select when board layout allows LQFP100 and dual Ethernet or integrated USB HS PHY is preferred over ULPI flexibility. |
| STM32F407VGT6 | Cortex-M4F core @ 168 MHz, FPU, 1 MB Flash, no Ethernet MAC (requires external PHY), adds SPDIF and additional timers. | Better for floating-point intensive tasks (motor control, audio), but lacks native Ethernet - requires external MAC/PHY and increases BOM cost and latency. | Choose for compute-heavy applications where Ethernet is optional or can be added externally; avoid if IEEE 1588 or deterministic MAC timing is mandatory. |
Compared with STM32F205RET7TR, STM32F207VCT6 offers expanded I/O and dual Ethernet but requires PCB redesign, while STM32F407VGT6 trades integrated Ethernet for floating-point performance - making the RET7TR optimal for compact, Ethernet-first industrial edge nodes.
Availability
STM32F205RET7TR is available at Aetrix Electronics and suitable for industrial Ethernet gateways, multi-protocol field controllers, and secure IoT edge nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for STM32F205RET7TR 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 and broad industrial qualification.
This part belongs to the STM32F2 mainstream Arm Cortex-M3 series, designed specifically for industrial connectivity applications demanding integrated high-speed interfaces (Ethernet, USB OTG, CAN), real-time determinism, and robust peripheral integration in space-constrained designs.
FAQ
Does STM32F205RET7TR support hardware encryption?
No, it does not include a dedicated cryptographic accelerator (e.g., AES, SHA, PKA). It relies on software libraries for encryption, though its 96-bit unique ID and true random number generator (RNG) provide foundational security primitives for key derivation and entropy seeding.
What is the maximum operating temperature range for this part?
The STM32F205RET7TR is rated for industrial temperature range: –40 °C to +85 °C ambient, validated per ST's qualified industrial grade specifications (not extended or automotive grade). Thermal derating applies above 70 °C under full peripheral load.
Can the Ethernet MAC operate in RMII mode with this LQFP64 variant?
Yes - RMII mode uses only 7 pins (REF_CLK, CRS_DV, RXD0/1, TXD0/1, TX_EN) and is fully supported on the LQFP64 package. MII mode is not available on this pinout due to insufficient I/O count, making RMII the default and only supported physical layer interface.
Is the ART Accelerator enabled by default after reset?
Yes - the ART Accelerator is enabled by default upon power-on reset and remains active unless explicitly disabled via the FLASH_ACR register. This ensures zero-wait-state Flash execution from startup, critical for deterministic boot and real-time ISR latency.
STM32F205RET7TR 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:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 132K 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:
STM32F205RET7TR FAQ
1.How can I place an order for STM32F205RET7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F205RET7TR 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 STM32F205RET7TR reliable?
The price and inventory of STM32F205RET7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205RET7TR is usually 5 days.
3.What payment methods are accepted for STM32F205RET7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205RET7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F205RET7TR?
STM32F205RET7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F205RET7TR 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 STM32F205RET7TR?
For technical support, including STM32F205RET7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205RET7TR requirements.
6.How does Aetrix verify that STM32F205RET7TR is sourced from the original manufacturer or authorized distributors?
All STM32F205RET7TR 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 STM32F205RET7TR meets industry standards.
7.What is the process for return or replacement of STM32F205RET7TR?
All STM32F205RET7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205RET7TR, 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 STM32F205RET7TR part is unused and in its original packaging.
Return procedure for STM32F205RET7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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