The microcontroller in question is the ARM Cortex-M3, integrated into the STM32F1. This particular chip features a 32-bit single-core processor with a maximum clock speed of 72MHz. It also boasts a substantial memory capacity, including 768KB (768K x 8) of FLASH storage. The STM32F1 microcontroller is packaged in a 100-LQFP (14x14) lead count format.