The STM32F103RBT6 is an ARM Microcontroller (MCU) manufactured by STMicroelectronics. It offers a 32-bit Cortex M3 core, with 128KB of Flash (ROM) memory and 20KB of RAM memory. This MCU also features advanced analog and communication peripherals, making it ideal for a range of embedded applications, including IoT products, consumer electronics, or industrial applications. The STM32F103RBT6 comes with an embedded debug system, multiple clock sources, and extended temperature range support (from -40 to +105°C). It offers excellent stability and reliability, and is suitable for automotive and aerospace applications.