STMicroelectronics STM32F405RGT6TR

STM32F405RGT6TR Product Summary

The STM32F405RGT6TR from STMicroelectronics is a 32-bit ARM Cortex-M4-based microcontroller targeting applications that demand high computational performance and advanced peripheral integration. It is part of the STM32F4 series, which is well recognized in the industry for blending real-time processing with extensive connectivity options. Housed in a 64-pin LQFP package measuring 10mm x 10mm, the STM32F405RGT6TR comes with 1MB embedded flash memory and 192KB SRAM, positioning it as a robust choice for compact yet powerful embedded designs.

Key Specifications and Architecture of STM32F405RGT6TR

At the heart of the STM32F405RGT6TR lies an ARM 32-bit Cortex-M4 CPU, integrated with a floating-point unit (FPU) and running at up to 168 MHz. This architecture enables execution speeds up to 210 DMIPS with DSP instructions and a memory protection unit for enhanced application safety.

ST’s patented Adaptive Real-Time (ART) Accelerator technology allows zero-wait state execution from flash memory, ensuring fast response times crucial for control and signal processing systems. The Cortex-M4 core is also supplemented with an embedded Trace Macrocell for advanced application debug and analysis, supporting both Serial Wire Debug (SWD) and JTAG interfaces.

Memory Integration and Peripheral Support of STM32F405RGT6TR

Memory architecture on the STM32F405RGT6TR is designed for versatility. It offers 1MB of embedded Flash and 192KB of SRAM, including 64KB of Core Coupled Memory (CCM) for latency-critical code, plus 512 bytes of OTP memory and flexible static memory controller support for external Compact Flash, SRAM, PSRAM, NOR, and NAND interfaces.

On the peripheral side, the device features up to 17 timers (a mix of 16- and 32-bit), with configurable functions for IC/OC/PWM, pulse counting, and quadrature encoder input. There is also an LCD parallel interface and comprehensive DMA capability (16-stream, FIFO-equipped) to offload the CPU during high-speed data operations.

Communication Interfaces and Connectivity Options of STM32F405RGT6TR

The STM32F405RGT6TR provides engineers with an extensive range of connectivity features, making it well suited for applications that require versatile communication protocols. It offers three I²C interfaces (with SMBus/PMBus support), four USARTs and two UARTs (including IrDA, LIN, and modem control capabilities), three SPIs (with two supporting full-duplex I²S for audio applications), two CAN 2.0B controllers, an SDIO interface, and both USB OTG full-speed and high-speed controllers.

For networked applications, an integrated Ethernet MAC (with IEEE 1588v2 hardware timestamping and dedicated DMA) provides native support for industrial Ethernet communications. The flexible pin-mapping allows most of these functions to be realized simultaneously, being supported by up to 140 IOs with 5V tolerance and high-speed operation.

Analog Features and Timing Capabilities of STM32F405RGT6TR

The STM32F405RGT6TR includes three 12-bit ADCs, capable of up to 2.4 MSPS each and 7.2 MSPS in triple interleaved mode (24 total channels), making it suitable for precision data acquisition and DSP-coupled real-time control. Two 12-bit DACs provide precision analog output capability. Internal voltage and temperature sensors, as well as RTC/calendaring and true random number generation capabilities, support advanced system diagnostics and security applications.

Further, advanced timing functions are supported with up to 17 configurable timers—an essential feature for industrial automation, motor control, and synchronized communication systems. The device also supports both low-power and backup operation modes, maintaining RTC and user data during power loss through VBAT and optional backup SRAM.

Environmental Requirements and Packaging Details for STM32F405RGT6TR

Engineered for robustness, the STM32F405RGT6TR operates from 1.8V to 3.6V supply, with an ambient temperature range from -40°C to +85°C, suiting it to both consumer electronics and industrial environments. The 64-pin LQFP (10x10mm) package optimizes board space without sacrificing IO accessibility, while offering RoHS and REACH compliance for lead-free and environmentally conscious designs.

Key electrical characteristics include robust ESD ratings, detailed static and dynamic IO characteristics, and low-power consumption profiles in Sleep, Stop, and Standby modes. Accurate oscillator and clocking options enable reliable RTC and communication timing.

Comparable or Substitute Models for STM32F405RGT6TR

When selecting a microcontroller for a new design or legacy product update, engineers may consider equivalent or pin-compatible alternatives. Within STMicroelectronics’ portfolio, close equivalents to the STM32F405RGT6TR include other STM32F405xx variants (such as STM32F405VG or STM32F405ZG) and models from the STM32F407xx family. The STM32F407 series adds additional peripherals—such as enhanced connectivity and camera interfaces—should higher feature integration be required.

It is essential to review the specific timer, communication, and flash memory configurations of these models, as peripheral mapping and package pinouts may influence migration effort. For procurement and supply chain considerations, checking availability, lifecycle status, and environmental compliance (RoHS3, REACH) is recommended for all selected models.

Conclusion

: Selecting STM32F405RGT6TR for Advanced Embedded Applications

The STM32F405RGT6TR stands out as a feature-rich, high-performance microcontroller for embedded system designs requiring real-time processing, rich connectivity, and robust analog integration. Its extensive on-chip peripherals, flexible power and clocking schemes, and environmental resilience make it highly adaptable for both industrial and consumer applications. Whether as a centerpiece for a new platform or as a direct replacement in ongoing projects, the STM32F405RGT6TR provides engineers with a reliable, future-ready solution for demanding embedded electronics.