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STMicroelectronics STM32F205ZET7TR
- Part No.:
- STM32F205ZET7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
STM32F205ZET7TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,910
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Product details
Overview
STM32F205ZET7TR 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 and deterministic network timing.
For engineers reviewing the STM32F205ZET7TR datasheet, STM32F205ZET7TR pinout, STM32F205ZET7TR application, or STM32F205ZET7TR equivalent, key selection criteria include Ethernet MAC + USB HS coexistence, DCMI camera interface bandwidth (48 MB/s), ART Accelerator™-enabled zero-wait-state Flash execution, and 138 5 V-tolerant I/Os for mixed-voltage system interfacing.
Technical Context
The device integrates a multi-AHB bus matrix enabling concurrent access to Flash, SRAM, and peripherals-including simultaneous Ethernet DMA, USB HS DMA, and DCMI transfers without arbitration stall. Its ART Accelerator™ uses prefetch and branch cache to eliminate Flash wait states at 120 MHz, delivering 150 DMIPS sustained performance.
It supports full-duplex 10/100 Ethernet via MII/RMII with hardware timestamping for IEEE 1588v2 PTP, while the dual CAN 2.0B controllers operate independently with dedicated message RAM and flexible filtering-enabling gateway applications that bridge CAN FD (via external transceiver) and Ethernet networks.
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. |
| Memory | 512 KB Flash + 128 KB SRAM + 4 KB backup SRAM; supports XIP execution and retains critical state during Stop mode with VBAT. |
| Connectivity | Dual CAN 2.0B + USB 2.0 HS/FS OTG + 10/100 Ethernet MAC; allows concurrent fieldbus-to-IP protocol translation in single-chip gateways. |
| Analog Peripherals | Three 12-bit ADCs (6 MSPS triple interleaved) + two 12-bit DACs; supports synchronized motor current sensing and analog output control loops. |
| Timing & Clock | 4–26 MHz HSE + 32 kHz LSE + audio PLL (PLLI2S); enables precise RTC calibration and high-fidelity I2S audio clock generation. |
| I/O Capability | 140 GPIOs, 138 of which are 5 V-tolerant; simplifies level-shifting in legacy industrial systems interfacing with 5 V sensors and logic. |
| Camera Interface | 8–14-bit parallel DCMI supporting 48 MB/s throughput; directly connects CMOS image sensors for embedded vision preprocessing. |
Pinout & Package
LQFP144 (20 × 20 mm) package with 144 pins, 0.5 mm pitch, exposed thermal pad, RoHS-compliant, rated for industrial temperature range (–40°C to +105°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Configurable as digital input/output, alternate function (AF), or analog input; 5 V-tolerant on all except ADC/DAC pins. |
| PA12/PA11 | USB FS D+/D− | Integrated full-speed PHY; requires no external transceiver for USB device/host operation. |
| PA13/PA14/PA15 | SWDIO/SWCLK/NRST | Serial Wire Debug interface; enables non-intrusive real-time debugging and flash programming via standard J-Link or ST-Link. |
| PC1–PC4, PD0–PD7 | Ethernet MII/RMII | Direct connection to PHY chip; RMII mode reduces pin count to 9 signals (TXD0/TXD1/TXEN/RXD0/RXD1/CRS_DV/REF_CLK/MDC/MDIO). |
| PD3–PD12 | DCMI D0–D7 + HSYNC/VSYNC/PCLK | Parallel 8-bit camera data bus with frame sync signaling; supports progressive scan CMOS sensors up to VGA@60 fps. |
| PB8/PB9 | CAN1_RX/CAN1_TX | Dedicated CAN controller pins with internal pull-up/pull-down and slew-rate control for robust automotive/industrial bus termination. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Static Memory Controller (FSMC) | Supports NOR, PSRAM, NAND, and CompactFlash with programmable timing-enables direct attachment of external display controllers or FPGA co-processors. |
| Adaptive Real-Time Accelerator (ART) | Eliminates Flash wait states at 120 MHz; delivers consistent 150 DMIPS performance without code relocation to SRAM. |
| Embedded Trace Macrocell (ETM) | Enables instruction-level trace capture over SWO pin; essential for root-cause analysis of timing-critical ISR latency issues. |
| Backup Domain Resources | 20 × 32-bit registers + 4 KB SRAM powered by VBAT; preserves configuration and sensor history across full power cycles. |
| CRC Calculation Unit | Hardware-accelerated CRC-32 (IEEE 802.3) and CRC-8/16; offloads checksum computation from CPU during firmware OTA updates or Ethernet frame processing. |
Applications
| Industrial Ethernet Gateway | Multi-Protocol PLC Controller |
|---|---|
|
Use Scenario: Bridging Modbus RTU over RS-485 to EtherNet/IP or PROFINET via software stack. IC Role / Device Role / Timing Role: Central protocol translator with deterministic Ethernet MAC timestamping and dual CAN for fieldbus side. Use Value: Eliminates need for external FPGA or dual-chip architecture; IEEE 1588v2 hardware timestamping ensures sub-microsecond synchronization accuracy. |
Use Scenario: Compact PLC executing ladder logic while managing analog I/O, motion control, and HMI communication. IC Role / Device Role / Timing Role: Real-time controller running FreeRTOS with hardware timer-triggered ADC sampling and PWM generation. Use Value: 12-bit triple-interleaved ADCs achieve 6 MSPS aggregate rate for synchronized current/voltage acquisition in servo drives. |
| Smart Camera Node | Secure IoT Edge Gateway |
|
Use Scenario: Low-latency vision preprocessing node capturing VGA video and extracting metadata before cloud upload. IC Role / Device Role / Timing Role: Image acquisition engine using DCMI interface and hardware JPEG encoder (via firmware library). Use Value: 48 MB/s DCMI bandwidth supports 60 fps VGA (640×480×2 bytes) without frame dropping; 512 KB Flash stores optimized vision algorithms. |
Use Scenario: Cellular-connected edge device aggregating sensor data, performing local anomaly detection, and signing firmware updates. IC Role / Device Role / Timing Role: Secure host managing TLS handshake acceleration, AES-128 encryption, and secure boot verification. Use Value: 96-bit unique ID and hardware RNG enable cryptographically strong key derivation; VBAT-backed registers store secure counters across reboots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F207ZGT6 | Same LQFP144 package, but with 1 MB Flash and full-speed USB OTG only (no USB HS); lacks ULPI interface and dedicated USB HS DMA. | Suitable for Ethernet-only gateways without high-bandwidth USB peripheral hosting. | Select when USB HS functionality is unnecessary and larger Flash is required for complex protocol stacks. |
| STM32F407VGT6 | Cortex-M4 core @ 168 MHz, FPU, 1 MB Flash, but no Ethernet MAC; USB OTG HS supported via external ULPI PHY only. | Better for floating-point intensive tasks (e.g., motor control algorithms), but requires external PHY for Ethernet. | Choose when computational throughput outweighs integrated connectivity, and external PHY integration is acceptable. |
Compared with STM32F205ZET7TR, the STM32F207ZGT6 trades USB HS capability for doubled Flash capacity, while the STM32F407VGT6 upgrades CPU performance and adds FPU at the cost of removing on-chip Ethernet-requiring external PHY and increasing BOM complexity for networked applications.
Availability
STM32F205ZET7TR is available at Aetrix Electronics and suitable for industrial gateways, PLC controllers, smart camera nodes, and secure IoT edge devices requiring stable component supply across extended product lifecycles.
Supply support for STM32F205ZET7TR 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, MEMS, and automotive ICs.
The STM32F2 series targets high-performance industrial connectivity applications, emphasizing integrated Ethernet, USB, and CAN with deterministic real-time behavior and robust memory protection for mission-critical systems.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F205ZET7TR achieves 120 MHz maximum CPU frequency using its internal 16 MHz factory-trimmed RC oscillator multiplied by the main PLL, or an external 4–26 MHz crystal oscillator. The Adaptive Real-Time Accelerator (ART) eliminates Flash wait states at this speed, enabling sustained 150 DMIPS performance without code relocation to SRAM.
Does this MCU support hardware encryption or secure boot?
The STM32F205ZET7TR does not include dedicated cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It provides a 96-bit unique ID and hardware RNG for key derivation, but cryptographic operations must be implemented in software or augmented with external secure elements. Secure boot requires external validation or custom bootloader implementation.
Can the Ethernet MAC operate in RMII mode with external PHY?
Yes-the Ethernet MAC supports both MII and RMII physical layer interfaces. In RMII mode, it uses 9 pins (TXD0/TXD1/TXEN/RXD0/RXD1/CRS_DV/REF_CLK/MDC/MDIO) to connect to standard RMII-compliant PHYs such as the LAN8720A or DP83848, reducing PCB routing complexity and pin count versus full MII.
What is the purpose of the VCAP1/VCAP2 pins and what capacitor value is required?
VCAP1 and VCAP2 are internal voltage regulator decoupling pins for the 1.2 V core supply. Each requires a 2.2 µF ±10% ceramic capacitor (X7R or better) placed as close as possible to the pin with low-inductance layout. Failure to populate these capacitors correctly causes unstable core voltage and unpredictable reset behavior or lockup.
STM32F205ZET7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-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:
- 114
- 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 24x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F205ZET7TR FAQ
1.How can I place an order for STM32F205ZET7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F205ZET7TR 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 STM32F205ZET7TR reliable?
The price and inventory of STM32F205ZET7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205ZET7TR is usually 5 days.
3.What payment methods are accepted for STM32F205ZET7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205ZET7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F205ZET7TR?
STM32F205ZET7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F205ZET7TR 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 STM32F205ZET7TR?
For technical support, including STM32F205ZET7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205ZET7TR requirements.
6.How does Aetrix verify that STM32F205ZET7TR is sourced from the original manufacturer or authorized distributors?
All STM32F205ZET7TR 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 STM32F205ZET7TR meets industry standards.
7.What is the process for return or replacement of STM32F205ZET7TR?
All STM32F205ZET7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205ZET7TR, 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 STM32F205ZET7TR part is unused and in its original packaging.
Return procedure for STM32F205ZET7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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