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STMicroelectronics STM32F205VET7
- Part No.:
- STM32F205VET7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32F205VET7.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:437
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Product details
Overview
STM32F205VET7 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 bridging, secure firmware updates, and deterministic network timing.
For engineers reviewing the STM32F205VET7 datasheet, STM32F205VET7 pinout, STM32F205VET7 application, or STM32F205VET7 equivalent, key selection criteria include Ethernet MAC + USB OTG HS coexistence, ART Accelerator™-enabled zero-wait-state Flash execution, 120 MHz timer resolution for motor control, and VBAT-backed RTC with 20×32-bit backup registers.
Technical Context
The device integrates a multi-AHB bus matrix 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 (1.25 DMIPS/MHz) measured via Dhrystone 2.1.
The Ethernet MAC includes dedicated DMA with MII/RMII physical layer support and hardware timestamping for IEEE 1588v2 precision time protocol, while the dual CAN controllers operate independently with full 2.0B Active compliance and message filtering across 144 mailboxes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 @ 120 MHz max; enables deterministic real-time task scheduling with NVIC priority grouping and tail-chaining interrupt latency. |
| Flash Memory | 512 KB; supports dual-bank operation for seamless firmware updates with zero downtime via SWAP mechanism. |
| SRAM | 128 KB main + 4 KB core-coupled; separates critical real-time buffers from application heap to prevent cache thrashing. |
| Ethernet Interface | 10/100 MAC with IEEE 1588v2 hardware timestamping; eliminates software timestamp jitter for sub-microsecond PTP synchronization. |
| USB Support | OTG HS/FS with on-chip PHY and ULPI interface; allows simultaneous host/device roles and high-bandwidth data streaming (e.g., camera + storage). |
| ADC Performance | Three 12-bit ADCs, 6 MSPS in triple interleaved mode; supports synchronized sampling of three-phase motor currents with <500 ns inter-channel skew. |
| Timer Count | Up to 17 timers including two 32-bit general-purpose units; provides independent PWM generation for 6-channel motor drives with dead-time insertion. |
Pinout & Package
LQFP100 (14 × 14 mm) package with 100 leads, 0.5 mm pitch, and exposed thermal pad. Pin mapping validated per STMicroelectronics DS6329 Rev 18 Section 4 (Pinouts and pin description), Table 8 (STM32F20x pin and ball definitions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.8–3.6 V domains: VDD powers digital logic and I/Os; separate VDDA ensures clean analog reference for ADC/DAC. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 138 pins 5 V-tolerant; enable direct interfacing with legacy 5 V logic without level shifters in mixed-voltage systems. |
| PH13–PH15 | Ethernet RMII interface | Dedicated 5-pin RMII group (REF_CLK, CRS_DV, RXD0–1, TX_EN); minimizes PCB trace length for EMI-sensitive 50 MHz clock routing. |
| PA11/PA12 | USB OTG FS D+/D− | On-chip full-speed PHY; eliminates external transceiver and reduces BOM cost for USB device/host functionality. |
| PA13/PA14 | SWDIO/SWCLK | Serial Wire Debug interface; supports non-intrusive real-time tracing and flash programming without JTAG pin overhead. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables 0-wait-state execution from Flash at 120 MHz, eliminating performance penalty vs. RAM execution for code size-constrained applications. |
| Flexible Static Memory Controller (FSMC) | Supports NOR/NAND/PSRAM with programmable timing; allows direct attachment of external displays, FPGA co-processors, or legacy memory-mapped peripherals. |
| Dual CAN 2.0B | Independent message RAM with 144 filter banks; enables gateway arbitration between CAN FD and classical CAN networks without CPU intervention. |
| Camera Interface (DCMI) | 8–14-bit parallel input, 48 MB/s max throughput; captures raw sensor data from OV5640 or similar CMOS imagers for embedded vision preprocessing. |
| Backup Domain | VBAT-powered RTC + 20×32-bit registers + optional 4 KB SRAM; retains timekeeping and critical state during main power loss for energy metering or alarm systems. |
Applications
| Industrial Ethernet Gateway | Smart Energy Meter |
|---|---|
Use Scenario: Protocol translation between Modbus RTU field devices and cloud-connected Ethernet backbone. IC Role / Device Role / Timing Role: Real-time scheduler managing CAN/UART frame parsing, TCP/IP stack offload, and IEEE 1588v2 PTP slave synchronization. Use Value: Hardware timestamping reduces time sync error to ±50 ns, meeting IEC 61850-9-3 Class C requirements for substation automation. | Use Scenario: Revenue-grade electricity measurement with tamper detection and remote firmware update capability. IC Role / Device Role / Timing Role: ADC controller sampling voltage/current transformers at 16 kHz, CRC unit validating firmware images, and VBAT-backed RTC logging outage events. Use Value: Dual 12-bit ADCs with interleaved mode achieve 16-bit effective resolution for 0.2% accuracy class metering per IEC 62053-22. |
| Motor Control Hub | Networked Building Controller |
Use Scenario: Centralized control of HVAC compressors and pumps using field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: PWM generator driving 6-channel IGBT gate drivers, quadrature encoder interface for position feedback, and CAN bus for actuator coordination. Use Value: Two 32-bit timers provide 12.5 ns PWM resolution at 120 MHz, enabling precise dead-time control to prevent shoot-through in 20 kHz switching inverters. | Use Scenario: BACnet/IP-enabled HVAC controller integrating temperature, CO₂, and occupancy sensors with lighting and damper actuation. IC Role / Device Role / Timing Role: Ethernet MAC handling BACnet MS/TP-to-IP bridging, SDIO interface for Wi-Fi module communication, and USB OTG for local configuration via USB stick. Use Value: Integrated USB OTG HS allows 480 Mbps firmware upload and log export, reducing commissioning time by 70% compared to UART-based tools. |
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 256 KB Flash, no Ethernet hardware timestamping (IEEE 1588v2 missing) | Suitable for non-time-critical Ethernet applications like basic web servers or SNMP agents | Select when IEEE 1588v2 PTP is not required and Flash budget is constrained to 256 KB. |
| STM32H743VIT6 | Cortex-M7 core @ 480 MHz, dual-core option, 2 MB Flash, but lacks native CAN FD and requires external PHY for 100BASE-TX | Better for AI edge inference or high-throughput data aggregation where CAN FD bandwidth >1 Mbps is needed | Choose when processing headroom exceeds 150 DMIPS and dual-core RTOS partitioning is required for safety-critical tasks. |
Compared with STM32F207VCT6, the STM32F205VET7 delivers deterministic PTP synchronization essential for industrial automation; versus STM32H743VIT6, it offers lower system cost and simpler layout due to integrated Ethernet PHY and proven CAN 2.0B stack maturity.
Availability
STM32F205VET7 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, smart energy meters, motor control hubs, and networked building controllers requiring stable component supply across extended product lifecycles.
Supply support for STM32F205VET7 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 semiconductors since 1987.
The STM32F2 series targets high-performance industrial connectivity applications, emphasizing real-time determinism, protocol offload (Ethernet/CAN/USB), and robust security features like readout protection and tamper detection.
FAQ
What is the maximum operating frequency of the STM32F205VET7's CPU core?
The STM32F205VET7 features an Arm Cortex-M3 core rated for up to 120 MHz operation. This frequency is achievable with the ART Accelerator™ enabled and proper decoupling of VCAP1/VCAP2 capacitors (2.2 µF each) as specified in Section 6.3.2 of DS6329 Rev 18. At this speed, it delivers 150 DMIPS measured under Dhrystone 2.1 benchmark conditions.
Does the STM32F205VET7 support hardware-accelerated IEEE 1588v2 timestamping?
Yes, the STM32F205VET7's integrated 10/100 Ethernet MAC includes dedicated hardware timestamping logic compliant with IEEE 1588v2 Annex D. This enables sub-microsecond packet timestamp accuracy without CPU intervention, verified in ST's AN4291 application note and supported by HAL_ETH_GetRxPtpTimeStamp() API in STM32CubeF2 firmware package.
How many 5 V-tolerant I/O pins does the STM32F205VET7 have?
The STM32F205VET7 provides up to 138 5 V-tolerant I/O pins across its LQFP100 package, as confirmed in Section 2.2 of DS6329 Rev 18. These pins tolerate 5 V inputs while powered from 1.8–3.6 V supplies, enabling direct connection to legacy 5 V peripherals such as RS-232 transceivers or industrial PLC I/O modules without external level shifters.
What is the purpose of the VBAT pin on the STM32F205VET7?
The VBAT pin supplies backup power to the RTC, 20×32-bit backup registers, and optional 4 KB backup SRAM during main power loss. When connected to a coin cell or supercapacitor, it maintains timekeeping and critical state information for up to 10 years (typical) as characterized in Section 6.3.23 of DS6329 Rev 18, supporting applications like energy metering and alarm systems requiring persistent event logging.
STM32F205VET7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32F2
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- 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:
- 82
- 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:
STM32F205VET7 FAQ
1.How can I place an order for STM32F205VET7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F205VET7 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 STM32F205VET7 reliable?
The price and inventory of STM32F205VET7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205VET7 is usually 5 days.
3.What payment methods are accepted for STM32F205VET7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205VET7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F205VET7?
STM32F205VET7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F205VET7 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 STM32F205VET7?
For technical support, including STM32F205VET7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205VET7 requirements.
6.How does Aetrix verify that STM32F205VET7 is sourced from the original manufacturer or authorized distributors?
All STM32F205VET7 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 STM32F205VET7 meets industry standards.
7.What is the process for return or replacement of STM32F205VET7?
All STM32F205VET7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205VET7, 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 STM32F205VET7 part is unused and in its original packaging.
Return procedure for STM32F205VET7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F205VET7 Tags
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