https://www.st.com/en/microcontrollers-microprocessors/stm32f2-series.html
STM32F2 - ARM Cortex-M3 Microcontrollers - High-Performance MCUs - STMicroelectronics
ST's STM32F2 series features ARM Cortex M3-based high-performance 32-bit microcontrollers, offering an unprecedented trade-off in price and performance....
arm cortex m3high performancestm32f2microcontrollersmcus