Principle of Operation

The GCLK module is comprised of five Generic Clock Generators (Generators) sourcing up to 64 Peripheral Channels and the Main Clock signal CLK_MAIN.

A clock source selected as input to a Generator can either be used directly, or it can be prescaled in the Generator. A generator output is used by one or more Peripheral Channels to provide a peripheral generic clock signal (GCLK_PERIPH) to the peripherals.