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STMicroelectronics STM32F205RBT6TR
- Part No.:
- STM32F205RBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F205RBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,032
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Product details
Overview
STM32F205RBT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 128 KB Flash, 4 KB SRAM, USB OTG HS/FS, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, and dual CAN 2.0B interfaces - deployed in industrial gateways requiring real-time protocol bridging and deterministic network timing.
For engineers reviewing the STM32F205RBT6TR datasheet, STM32F205RBT6TR pinout, STM32F205RBT6TR application, or STM32F205RBT6TR equivalent, key selection criteria include Ethernet MAC + USB OTG HS coexistence, ART Accelerator™-enabled zero-wait-state Flash execution, 12-bit triple ADC interleaving (6 MSPS), and LQFP64 package compatibility with legacy PCB footprints.
Technical Context
The device integrates a multi-bus AHB matrix enabling concurrent access to Flash, SRAM, and peripherals - critical for sustaining 150 DMIPS throughput during simultaneous Ethernet packet processing, USB data streaming, and camera interface capture. Its ART Accelerator™ eliminates Flash wait states by caching instruction fetches and branch prediction metadata.
Dual USB controllers operate independently: OTG_FS uses on-chip full-speed PHY, while OTG_HS employs dedicated DMA and ULPI interface for external high-speed PHYs. The Ethernet MAC includes MII/RMII physical layer support and hardware timestamping aligned to IEEE 1588v2 for sub-microsecond time synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 @ 120 MHz, 150 DMIPS, with MPU and ART Accelerator™ for zero-wait-state Flash execution |
| Memory | 128 KB Flash (user-programmable), 4 KB SRAM, 512 B OTP, plus flexible static memory controller for NOR/NAND/PSRAM expansion |
| Connectivity | Dual CAN 2.0B, USB 2.0 OTG FS + OTG HS (with dedicated DMA), 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping |
| Analog | Three 12-bit ADCs (24-channel total), 6 MSPS max in triple interleaved mode; two 12-bit DACs |
| Timers & I/O | Up to 17 timers including advanced-control (TIM1/TIM8), general-purpose, and basic types; 51 I/O pins in LQFP64 package, all 5 V-tolerant |
| Package | LQFP64 (10 × 10 mm), 0.5 mm pitch, RoHS-compliant, rated for industrial temperature range (–40°C to +85°C) |
| Power | 1.8–3.6 V supply; Sleep/Stop/Standby low-power modes; VBAT backup for RTC and 20 × 32-bit registers |
Pinout & Package
LQFP64 package with exposed thermal pad (EP), 0.5 mm pitch, 10 × 10 mm body size, compliant with JEDEC MO-110D. Pin 1 marked via corner notch or dot; recommended reflow profile per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground | Separate analog/digital domains ensure ADC/DAC accuracy; VDDA must be ≥ VDD – 0.3 V and ≤ VDD + 0.3 V |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/O | 51 usable I/Os in LQFP64; all 5 V-tolerant, configurable as GPIO, AF, or event inputs; support EXTI interrupt generation |
| PA11/PA12 | USB OTG FS D+/D− | Dedicated full-speed USB transceiver pins; internal pull-ups enabled in device mode; require 27 Ω series resistors for ESD robustness |
| PA13/PA14/PA15 | SWDIO/SWCLK/NRST | Serial Wire Debug interface; NRST is active-low reset with Schmitt trigger; supports low-pin-count debug without JTAG |
| PC1/PC4/PC5 | ETH_MDC/ETH_MDIO/ETH_CRS_DV | Ethernet MAC management and status signals; MDC/MDIO used for PHY register access; CRS_DV indicates carrier sense/data valid |
| PA8/PA9/PA10 | USB_OTG_HS_ULPI_CLK/DIR/NXT | ULPI interface clock and control lines for external high-speed PHY; requires precise 30 ns setup/hold timing relative to CLK |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables 0-wait-state execution from Flash at 120 MHz, eliminating performance penalty vs. RAM execution |
| Flexible Static Memory Controller (FSMC) | Supports NAND/NOR/PSRAM with hardware ECC and wait-state generation - enables direct attachment of external display or storage without FPGA glue logic |
| IEEE 1588v2 Hardware Timestamping | Integrated timestamp unit in Ethernet MAC provides sub-microsecond precision for PTP synchronization in industrial automation networks |
| Triple Interleaved ADC Mode | Combines three 12-bit ADCs into single 6 MSPS sampling stream - suitable for motor phase current sensing with synchronized acquisition |
| USB OTG HS + FS Coexistence | Dual independent USB controllers allow simultaneous host (e.g., USB flash drive) and device (e.g., CDC ACM) operation without resource contention |
Applications
| Industrial Ethernet Gateway | USB-Camera Edge Node |
|---|---|
Use Scenario: Protocol translation between Modbus TCP and CANopen in factory-floor PLC interconnect systems. IC Role / Device Role / Timing Role: MCU executes real-time stack scheduling, manages dual Ethernet/USB traffic, and synchronizes CAN message timestamps using IEEE 1588v2 hardware. Use Value: Eliminates need for external timestamping IC or FPGA; reduces BOM cost by 32% versus discrete PHY + microcontroller solutions. | Use Scenario: Real-time barcode scanning and image preprocessing in automated retail kiosks. IC Role / Device Role / Timing Role: DCMI captures 8-bit parallel video at 48 MB/s; triple ADC samples ambient light sensors; USB OTG FS streams JPEG frames to host PC. Use Value: On-chip JPEG compression not supported, but 6 MSPS ADC sampling enables adaptive exposure control synchronized to frame capture. |
| Smart Energy Meter Hub | Multi-Protocol Field Controller |
Use Scenario: Aggregating data from RS-485 smart meters, LoRaWAN sensors, and local HAN networks for cloud upload. IC Role / Device Role / Timing Role: USARTs handle isolated RS-485 Modbus RTU; SPI drives LoRa transceiver; Ethernet MAC uploads encrypted data via TLS 1.2 stack. Use Value: Dual CAN interfaces enable redundant fieldbus communication; 128 KB Flash accommodates secure boot + OTA update partitioning. | Use Scenario: Centralized control of HVAC, lighting, and security subsystems in commercial buildings. IC Role / Device Role / Timing Role: Runs BACnet/IP stack over Ethernet; manages multiple I²C sensor clusters; generates PWM for fan speed control via TIM channels. Use Value: 17 timers provide independent PWM outputs for 12+ actuators; 5 V-tolerant I/O simplifies interface to legacy 5 V sensor buses. |
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), 1 MB Flash, FPU, no IEEE 1588v2 hardware timestamping; LQFP100 package only | Suitable for floating-point intensive tasks (e.g., FFT-based signal analysis); lacks integrated Ethernet timestamping for deterministic networking | Select when computational throughput > deterministic timing fidelity; requires PCB redesign due to larger footprint |
| STM32H743ZIT6 | Cortex-M7 core (480 MHz), dual-core option, 2 MB Flash, Ethernet with IEEE 1588v2, but no USB OTG HS PHY - requires external ULPI PHY | Targeted at high-end HMI and AI edge inference; USB HS functionality depends on external component sourcing and layout complexity | Choose for future-proof scalability; accept added BOM cost and design effort for USB HS capability |
Compared with STM32F205RBT6TR, the F407 offers higher compute headroom but sacrifices IEEE 1588v2 hardware timestamping and LQFP64 compactness, while the H743 delivers superior performance and memory but introduces external USB PHY dependency and larger package constraints.
Availability
STM32F205RBT6TR is available at Aetrix Electronics and suitable for industrial gateways, smart energy hubs, and multi-protocol field controllers requiring stable component supply across extended product lifecycles.
Supply support for STM32F205RBT6TR 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-grade components since 1987.
The STM32F2 series targets industrial connectivity applications demanding integrated Ethernet, USB OTG, and real-time peripheral control - optimized for deterministic protocol stacks and long-term availability in harsh environments.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F205RBT6TR achieves 120 MHz maximum CPU frequency using its internal PLL with input from HSE (4–26 MHz crystal) or HSI (16 MHz RC). The ART Accelerator™ caches instructions and branch predictions to eliminate Flash wait states, enabling sustained 150 DMIPS performance without external memory.
Does this MCU support hardware encryption for secure boot?
No, the STM32F205RBT6TR does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure ROM for secure boot. It relies on software-based implementations or external secure elements; later families like STM32L4/L5/H7 integrate dedicated crypto peripherals and secure firmware install (SFI) features.
Can the Ethernet MAC operate without an external PHY?
No - the STM32F205RBT6TR contains only the Media Access Control (MAC) layer. An external PHY chip (e.g., LAN8720A or DP83848) is required for physical layer signaling (MII/RMII interface), clock recovery, and line driver/receiver functions; the MCU provides no integrated PHY transceivers.
Is the LQFP64 package pin-compatible with other STM32F2xx variants?
Yes - the LQFP64 pinout is fully compatible across STM32F205RB, STM32F205RC, and STM32F207VB/VB derivatives. Peripheral mapping and alternate function assignments remain identical; only Flash/RAM sizes and feature subsets (e.g., Ethernet presence) differ between variants.
STM32F205RBT6TR 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:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 68K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F205RBT6TR FAQ
1.How can I place an order for STM32F205RBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F205RBT6TR 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 STM32F205RBT6TR reliable?
The price and inventory of STM32F205RBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205RBT6TR is usually 5 days.
3.What payment methods are accepted for STM32F205RBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205RBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F205RBT6TR?
STM32F205RBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F205RBT6TR 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 STM32F205RBT6TR?
For technical support, including STM32F205RBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205RBT6TR requirements.
6.How does Aetrix verify that STM32F205RBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F205RBT6TR 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 STM32F205RBT6TR meets industry standards.
7.What is the process for return or replacement of STM32F205RBT6TR?
All STM32F205RBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205RBT6TR, 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 STM32F205RBT6TR part is unused and in its original packaging.
Return procedure for STM32F205RBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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