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STMicroelectronics STM32F405RGT7TR
- Part No.:
- STM32F405RGT7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F405RGT7TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:9,110
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Product details
Overview
STM32F405RGT7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 168 MHz (210 DMIPS), featuring 1 MB flash, 192+4 KB SRAM (including 64 KB CCM), USB OTG HS/FS, 10/100 Ethernet MAC with IEEE 1588v2 support, and dual CAN 2.0B interfaces - deployed in industrial gateways requiring real-time connectivity, deterministic timing, and multi-protocol fieldbus integration.
For engineers reviewing the STM32F405RGT7TR datasheet, STM32F405RGT7TR pinout, STM32F405RGT7TR application, or STM32F405RGT7TR equivalent, key selection criteria include Ethernet MAC + USB OTG HS coexistence, ART Accelerator-enabled zero-wait-state flash execution at 168 MHz, CCM RAM for time-critical ISR data, and dual CAN with hardware filtering for automotive diagnostics and industrial control networks.
Technical Context
The STM32F405RGT7TR integrates an Arm Cortex-M4 core with single-precision FPU and Adaptive Real-Time (ART) Accelerator, enabling deterministic 0-wait-state execution from flash memory at full 168 MHz clock speed. Its memory subsystem includes 1 MB of embedded flash, 192 KB main SRAM, 4 KB backup SRAM, and 64 KB core-coupled memory (CCM) accessible only by CPU for latency-sensitive code/data.
Peripheral architecture features a multi-AHB bus matrix supporting concurrent high-bandwidth transfers: dedicated DMA channels for Ethernet MAC, USB OTG HS, SDIO, and DCMI; dual CAN controllers with 144 message objects; and a 10/100 Ethernet MAC with MII/RMII PHY interface and hardware IEEE 1588v2 timestamping for precision time synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 168 MHz max frequency, 210 DMIPS performance - enables real-time signal processing and floating-point math without external coprocessor. |
| Memory | 1 MB flash (0-wait-state via ART Accelerator), 192 KB + 4 KB SRAM (64 KB CCM) - supports large firmware images, dual-bank boot, and low-latency interrupt handling. |
| Connectivity | USB 2.0 OTG HS/FS (dedicated DMA + ULPI), 10/100 Ethernet MAC (MII/RMII, IEEE 1588v2), 2× CAN 2.0B - enables simultaneous wired network stack and fieldbus communication. |
| Analog Peripherals | 3× 12-bit ADCs (2.4 MSPS each, 7.2 MSPS interleaved), 2× 12-bit DACs - suitable for closed-loop motor control and sensor fusion with sub-microsecond sampling. |
| Timers & Control | Up to 17 timers including 2× 32-bit and 12× 16-bit general-purpose units, quadrature encoder inputs, PWM generation up to 168 MHz - meets servo drive and power converter timing requirements. |
| Package & I/O | LQFP64 (10 × 10 mm), 51 I/O pins (136 fast I/Os up to 84 MHz, 138 5 V-tolerant) - fits compact industrial HMI and gateway designs with mixed-voltage peripheral interfacing. |
| Security & Trust | 96-bit unique ID, true random number generator (RNG), CRC calculation unit - provides foundational elements for secure boot, device authentication, and data integrity checks. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant ECOPACK2, with exposed thermal pad for enhanced thermal dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core & I/O supply rails | 1.8–3.6 V operation; separate analog/digital domains enable noise isolation for ADC/DAC accuracy. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/O | 51 total GPIOs; most support multiple alternate functions (USART, SPI, I2C, CAN, TIM), configurable pull-up/down, open-drain, and slew-rate control. |
| PA11/PA12 | USB OTG FS D+/D− | Dedicated full-speed USB transceiver pins with internal pull-ups - eliminates need for external termination resistors. |
| PA13/PA14/PA15 | SWD debug interface | Serial Wire Debug (SWD) port (SWDIO, SWCLK, NRST) - enables non-intrusive debugging and programming with minimal pin count. |
| PH0/PH1 | HSE oscillator input | 4–26 MHz crystal connection for precise system clock generation; supports external clock source or bypass mode. |
| PC10/PC11 | ETH_MDC/ETH_MDIO | Ethernet management interface for PHY configuration via SMI - required for auto-negotiation and link status monitoring. |
| PG11/PG13/PG14 | ETH_TX_EN/ETH_TXD0/ETH_TXD1 | RMII transmit signals - enables 10/100 Mbps Ethernet with minimal pin count (7-pin RMII vs. 25-pin MII). |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables zero-wait-state execution from flash at 168 MHz - eliminates cache misses and guarantees deterministic interrupt latency for real-time control loops. |
| CCM RAM | 64 KB tightly coupled memory accessible only by CPU - stores critical ISR stacks, control algorithms, and real-time buffers without AHB bus contention. |
| Dual CAN 2.0B | Two independent bxCAN controllers with 144 message objects, hardware filtering, and time-triggered communication mode - supports J1939 and CANopen master/slave roles simultaneously. |
| Ethernet MAC + IEEE 1588v2 | Hardware timestamping with nanosecond resolution on Tx/Rx frames - enables precise time-synchronized distributed control in industrial automation and power grid applications. |
| Flexible Static Memory Controller (FSMC) | Supports NOR, PSRAM, NAND, and CompactFlash™ with 8/16-bit data bus - allows direct attachment of external displays, FPGA co-processors, or legacy memory-mapped peripherals. |
Applications
| Industrial Ethernet Gateway | Automotive Diagnostic Tool |
|---|---|
|
Use Scenario: Protocol translation between Modbus TCP, EtherNet/IP, and CAN FD in factory-floor edge nodes. IC Role / Device Role / Timing Role: Central MCU managing concurrent Ethernet stack, dual CAN interfaces, and real-time scheduling via SysTick + NVIC. Use Value: Integrated Ethernet MAC + dual CAN eliminates external bridge ICs; CCM RAM ensures <1 µs jitter on CAN TX scheduling. |
Use Scenario: Handheld OBD-II scanner supporting UDS, KWP2000, and ISO 15765-2 over CAN and USB. IC Role / Device Role / Timing Role: Host controller executing diagnostic protocol stacks while providing USB CDC virtual COM port to PC. Use Value: Dual CAN controllers allow simultaneous vehicle network monitoring and ECU reprogramming; USB OTG HS enables fast firmware updates. |
| Smart Energy Meter Hub | Camera-Based Machine Vision Edge Node |
|
Use Scenario: Aggregating data from PLCs, smart meters, and RTUs via RS485, CAN, and Ethernet before forwarding to cloud via LTE. IC Role / Device Role / Timing Role: Secure data concentrator with AES-128 encryption, RTC calendar, and tamper-detection GPIOs. Use Value: 96-bit unique ID + RNG enables per-device key derivation; backup SRAM retains metering logs during mains failure. |
Use Scenario: Low-latency image preprocessing (edge detection, thresholding) before sending ROI to host processor. IC Role / Device Role / Timing Role: DCMI interface captures 8-bit parallel camera data up to 54 MB/s; DMA offloads pixel transfer to SRAM. Use Value: Parallel DCMI + 2.4 MSPS ADCs allow synchronized trigger capture of analog sensor events with image frames. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-performance ARM Cortex-M4 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F407VGT6 | LQFP100 package (100 pins), adds LCD-TFT controller and additional timers - no Ethernet PHY pins; requires external PHY for MII/RMII. | Better suited for HMI with integrated display driving; lacks native RMII pinout for compact Ethernet designs. | Select when display interface or extra GPIOs outweigh compact LQFP64 footprint and integrated RMII signal routing. |
| STM32H743VIT6 | Arm Cortex-M7 @ 480 MHz, dual-core option, 2 MB flash, 1 MB RAM, DSI host, enhanced crypto - no native CAN FD, higher power consumption. | Targeted at AI inference at edge and high-res graphics; over-spec for deterministic CAN/Ethernet gateway use cases. | Choose only if >200 MHz CPU throughput, hardware crypto acceleration, or DSI display output are mandatory design requirements. |
Compared with STM32F407VGT6, the STM32F405RGT7TR offers superior pin-efficiency for RMII Ethernet and smaller PCB area; versus STM32H743VIT6, it delivers better power efficiency and lower BOM cost for deterministic dual-CAN + Ethernet gateway applications without needing M7-level compute.
Availability
STM32F405RGT7TR is available at Aetrix Electronics and suitable for industrial gateways, automotive diagnostic tools, smart energy hubs, and camera-based machine vision edge nodes requiring stable component supply across extended product lifecycles.
Supply support for STM32F405RGT7TR 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 devices for industrial, automotive, and consumer markets.
The STM32F4 series targets high-performance real-time embedded applications demanding DSP capability, rich connectivity, and deterministic timing - optimized for industrial control, motor drives, and protocol gateway implementations.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F405RGT7TR achieves 168 MHz maximum CPU frequency using its internal PLL with HSE (4–26 MHz) or HSI (16 MHz) as source. The ART Accelerator enables zero-wait-state execution from flash memory at this speed, eliminating instruction fetch stalls and ensuring consistent cycle timing for real-time tasks.
Does this MCU support hardware IEEE 1588 Precision Time Protocol?
Yes - the integrated 10/100 Ethernet MAC includes full IEEE 1588v2 hardware timestamping with nanosecond resolution on both transmit and receive paths. It supports PTP event message capture, fine-grained clock correction, and transparent clock functionality without CPU intervention.
How many CAN interfaces does the STM32F405RGT7TR have, and what version do they support?
The STM32F405RGT7TR integrates two independent bxCAN controllers compliant with ISO 11898-1:2003 (CAN 2.0B Active), supporting both standard (11-bit) and extended (29-bit) identifiers, programmable bit rates up to 1 Mbps, and hardware message filtering across 144 mailboxes.
Is there a dedicated DMA channel for the Ethernet MAC?
Yes - the Ethernet MAC has a dedicated 8-channel DMA controller with descriptor-based packet buffering, automatic checksum offload (IP/TCP/UDP), and scatter-gather support. This enables full-duplex 100 Mbps operation with minimal CPU load and deterministic frame latency under heavy traffic.
STM32F405RGT7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 168MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 192K 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:
STM32F405RGT7TR FAQ
1.How can I place an order for STM32F405RGT7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F405RGT7TR 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 STM32F405RGT7TR reliable?
The price and inventory of STM32F405RGT7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F405RGT7TR is usually 5 days.
3.What payment methods are accepted for STM32F405RGT7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F405RGT7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F405RGT7TR?
STM32F405RGT7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F405RGT7TR 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 STM32F405RGT7TR?
For technical support, including STM32F405RGT7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F405RGT7TR requirements.
6.How does Aetrix verify that STM32F405RGT7TR is sourced from the original manufacturer or authorized distributors?
All STM32F405RGT7TR 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 STM32F405RGT7TR meets industry standards.
7.What is the process for return or replacement of STM32F405RGT7TR?
All STM32F405RGT7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F405RGT7TR, 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 STM32F405RGT7TR part is unused and in its original packaging.
Return procedure for STM32F405RGT7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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