The STM32F105 is a high-performance, feature-rich microcontroller from STMicroelectronics. It is part of the STM32F1 series, which is based on the ARM Cortex-M3 core. The STM32F105 offers a wide range of features, making it suitable for a variety of applications including industrial controls, medical devices, and consumer electronics. It has a maximum clock speed of 72 MHz and offers up to 512 KB of Flash memory and 64 KB of RAM, providing ample resources for demanding applications. This microcontroller comes with a comprehensive set of peripherals, including UART, SPI, I2C, USB, and CAN interfaces, making it easy to interface with a wide range of external devices. It also has built-in support for Ethernet, providing a convenient solution for networking applications. The STM32F105 is designed for low-power operation, featuring various power-saving modes that enable efficient energy management. It also has a robust safety and security feature set, including a hardware-based CRC calculation unit and a memory protection unit. Overall, the STM32F105 offers a powerful and versatile solution for a wide range of embedded applications, making it a popular choice among developers and engineers.