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STMicroelectronics STM32F205VGT7
- Part No.:
- STM32F205VGT7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32F205VGT7.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:545
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Product details
Overview
STM32F205VGT7 from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 1 MB Flash, 128 + 4 KB SRAM, dual CAN 2.0B interfaces, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, and USB OTG HS/FS controllers - deployed in industrial gateways requiring real-time protocol bridging and deterministic network timing.
For engineers reviewing the STM32F205VGT7 datasheet, STM32F205VGT7 pinout, STM32F205VGT7 application, or STM32F205VGT7 equivalent, key selection criteria include Ethernet MAC DMA bandwidth, dual-CAN arbitration latency, ART Accelerator™-enabled Flash execution timing, and VBAT-backed RTC + 4 KB backup SRAM retention under brownout conditions.
Technical Context
The STM32F205VGT7 integrates a multi-AHB bus matrix enabling concurrent access to Flash, SRAM, and peripherals without contention; its ART Accelerator™ eliminates Flash wait states at 120 MHz by caching instruction fetches and branch prediction metadata. The embedded Ethernet MAC supports MII/RMII physical layer interfaces and hardware timestamping for IEEE 1588v2 precision time protocol (PTP) synchronization.
It implements two independent CAN 2.0B controllers with dedicated message RAM and programmable bit timing, supporting simultaneous CAN FD-ready frame filtering and transmission scheduling; the dual USB OTG controllers operate concurrently - one full-speed with on-chip PHY, one high-speed with ULPI interface and dedicated DMA - enabling simultaneous host/device roles in embedded USB hubs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 @ 120 MHz max; delivers 150 DMIPS with ART Accelerator™ enabling zero-wait-state Flash execution. |
| Memory | 1 MB Flash + 128 KB main SRAM + 4 KB backup SRAM; supports external NOR/NAND via FSMC for expandable code/data storage. |
| Connectivity | Dual CAN 2.0B, 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping, USB OTG HS/FS with dedicated DMA and on-chip PHYs. |
| Analog | Three 12-bit ADCs (up to 6 MSPS triple interleaved), two 12-bit DACs, integrated temperature sensor and VBAT monitoring. |
| Timers | Up to 17 timers including two 32-bit general-purpose, twelve 16-bit general-purpose, and two advanced-control (TIM1/TIM8) with complementary PWM outputs. |
| I/O | 82 I/O pins (LQFP100 package), all 5 V-tolerant, up to 60 MHz toggle rate, with interrupt capability and flexible alternate function mapping. |
| Power | 1.8–3.6 V supply range; Sleep/Stop/Standby low-power modes; VBAT domain powers RTC, 20×32-bit backup registers, and 4 KB backup SRAM. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Main power/ground | Core and I/O supply rails; decoupling required per datasheet layout guidelines to maintain 120 MHz stability. |
| VCAP1/VCAP2 | Internal regulator bypass | Must connect 2.2 µF ceramic capacitors to stabilize internal 1.2 V regulator; omission causes boot failure or erratic operation. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 5 V-tolerant, configurable as GPIO, EXTI, or 20+ alternate functions (SPI/I2C/USART/CAN/Ethernet signals). |
| PH0/PH1 | HSE oscillator input/output | Supports 4–26 MHz crystal; enables precise clock source for Ethernet MAC and USB PLL synchronization. |
| PD0/PD1 | UART4 TX/RX | Dedicated serial interface for debug or fieldbus communication; supports LIN, IrDA, and modem control protocols. |
| PC11/PC12 | CAN2_RX/CAN2_TX | Second CAN controller physical layer interface; enables redundant or multi-bus automotive/industrial networking. |
| PA1/PA2 | ETH_MII_RX_CLK/ETH_MII_CRS | MII interface signals for 10/100 Ethernet; require controlled impedance routing to meet IEEE 802.3 timing skew limits. |
| PA12/PA11 | OTG_FS_DM/OTG_FS_DP | Full-speed USB OTG differential pair; routed with 90 Ω differential impedance and <10 mm length matching for signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Eliminates Flash wait states at 120 MHz, enabling deterministic real-time ISR response without RAM-critical code relocation. |
| Flexible Static Memory Controller (FSMC) | Direct interface to NOR/NAND/PSRAM with programmable timing - used for external display buffers or firmware update partitions. |
| IEEE 1588v2 Hardware Timestamping | Sub-microsecond packet timestamping in Ethernet MAC; enables PTP slave clock synchronization accuracy <1 µs in industrial automation networks. |
| Dual CAN 2.0B Controllers | Independent message RAM and filtering logic allow concurrent CAN bus monitoring and gateway bridging without CPU overhead. |
| Backup Domain Resources | VBAT-powered RTC, 20×32-bit backup registers, and 4 KB backup SRAM retain state during main power loss - critical for energy metering and alarm logging. |
Applications
| Industrial Ethernet Gateway | Automotive Diagnostic Tool |
|---|---|
Use Scenario: Protocol translation between Modbus TCP and CANopen in factory-floor PLC interconnect systems. IC Role / Device Role / Timing Role: Primary MCU executing real-time Ethernet stack and CAN message scheduler; uses IEEE 1588v2 hardware timestamps for synchronized I/O sampling across distributed nodes. Use Value: Dual CAN + Ethernet MAC with dedicated DMA offloads protocol processing from Cortex-M3 core, sustaining >95% throughput at 100 Mbps line rate while servicing 12+ concurrent CAN frames/sec. | Use Scenario: Handheld OBD-II scanner supporting UDS diagnostics, DoIP, and J1939 over multiple vehicle buses. IC Role / Device Role / Timing Role: Central controller managing USB host (for PC connectivity), CAN FD-capable transceivers, and LIN physical layer drivers; RTC provides event timestamping for fault logs. Use Value: 5 V-tolerant I/Os interface directly with automotive 12 V bus level-shifted signals; backup SRAM retains diagnostic session history across ignition cycles without external NV memory. |
| Smart Energy Meter Hub | Networked Building Controller |
Use Scenario: Aggregating data from submetering ICs (e.g., ADE7953) via SPI and transmitting via Ethernet or cellular modem. IC Role / Device Role / Timing Role: Data concentrator MCU with hardware CRC unit for secure firmware updates and AES acceleration for DLMS/COSEM encryption. Use Value: 1 MB Flash stores dual-application images for fail-safe OTA updates; VBAT-backed RTC and 4 KB SRAM preserve billing cycle counters and tamper logs during AC power outage. | Use Scenario: BACnet/IP-to-BACnet MS/TP gateway controlling HVAC, lighting, and security subsystems in commercial buildings. IC Role / Device Role / Timing Role: Network processor running BACnet stack with Ethernet MAC and multiple UARTs driving RS-485 transceivers for legacy fieldbus communication. Use Value: 17 timers enable precise PWM dimming control (lighting), fan speed regulation (HVAC), and watchdog supervision of peripheral ICs - all synchronized to a single 120 MHz clock domain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F407VGT6 | Higher clock (168 MHz), FPU, larger Flash (1 MB), but no IEEE 1588v2 hardware timestamping or dual CAN with independent message RAM. | Lacks deterministic Ethernet timestamping needed for PTP; better suited for floating-point math-intensive tasks than industrial time-sensitive networking. | Select when floating-point performance outweighs IEEE 1588v2 compliance; verify CAN filter RAM allocation matches system message load. |
| STM32H743VIT6 | Cortex-M7 core (480 MHz), dual-core option, enhanced Ethernet with TSN support, but requires more complex power sequencing and lacks VBAT backup SRAM. | Targeted at TSN-based deterministic networks; not drop-in compatible due to different reset behavior, clock tree, and peripheral register maps. | Choose for next-gen time-sensitive networking beyond IEEE 1588v2; expect significant firmware porting effort and PCB redesign for power delivery. |
Compared with STM32F407VGT6, the STM32F205VGT7 offers superior real-time Ethernet determinism via IEEE 1588v2 hardware timestamping and dual-CAN independence, while the STM32H743VIT6 trades mature industrial feature set for higher compute density and future-proof TSN readiness at increased design complexity.
Availability
STM32F205VGT7 is available at Aetrix Electronics and suitable for industrial gateways, automotive diagnostic tools, smart energy metering hubs, and networked building controllers requiring stable component supply across extended product lifecycles.
Supply support for STM32F205VGT7 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 analog components for industrial, automotive, and consumer markets.
The STM32F2 series targets high-performance industrial connectivity applications, emphasizing real-time Ethernet, dual-CAN, USB OTG, and robust memory subsystems for protocol gateway and edge node implementations.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F205VGT7 achieves 120 MHz maximum CPU frequency using the ART Accelerator™, which caches instruction fetches and branch prediction metadata to eliminate Flash wait states. This requires enabling the accelerator in software and configuring Flash latency to 3WS (three wait states) for reliable operation at full speed with 1 MB Flash.
Does this MCU support hardware-accelerated IEEE 1588v2 timestamping?
Yes - the integrated 10/100 Ethernet MAC includes dedicated hardware timestamping logic compliant with IEEE 1588v2 Annex D, enabling sub-microsecond packet timestamping on transmit and receive paths without CPU intervention or software overhead.
How many CAN interfaces does the STM32F205VGT7 provide, and are they electrically isolated?
The STM32F205VGT7 integrates two independent CAN 2.0B controllers (CAN1 and CAN2), each with dedicated message RAM, filtering logic, and bit timing registers. Electrical isolation is not provided on-chip; external galvanic isolation (e.g., ISO1050) must be implemented at the transceiver level per system safety requirements.
What backup resources remain active during VBAT mode?
In VBAT mode, the RTC continues timekeeping, 20 × 32-bit backup registers retain user data, and the optional 4 KB backup SRAM remains powered - all sustained solely by the VBAT supply (1.8–3.6 V). Main Flash, SRAM, and digital peripherals are powered down.
STM32F205VGT7 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:
- 1MB (1M 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:
STM32F205VGT7 FAQ
1.How can I place an order for STM32F205VGT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F205VGT7 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 STM32F205VGT7 reliable?
The price and inventory of STM32F205VGT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205VGT7 is usually 5 days.
3.What payment methods are accepted for STM32F205VGT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205VGT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F205VGT7?
STM32F205VGT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F205VGT7 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 STM32F205VGT7?
For technical support, including STM32F205VGT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205VGT7 requirements.
6.How does Aetrix verify that STM32F205VGT7 is sourced from the original manufacturer or authorized distributors?
All STM32F205VGT7 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 STM32F205VGT7 meets industry standards.
7.What is the process for return or replacement of STM32F205VGT7?
All STM32F205VGT7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205VGT7, 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 STM32F205VGT7 part is unused and in its original packaging.
Return procedure for STM32F205VGT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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