3.1 Objectives All STM32 peripherals are driven by the clock, and every module uses independent clock to meet the low-power requirement. So STM32 clock system must be studied in detail to use peripherals properl4 • 3.1 Objectives All STM32 peripherals are driven by the clock, and every module uses independent clock to meet the low-power requirement. So STM32 clock system must be studied in detail to use peripherals properly