10.2 Overview

The Generic Clock Controller (GCLK) features four Generic Clock Generators that can provide a wide range of clock frequencies.

The generators can use six different external and internal oscillators as clock sources. The clock source of each generator can be divided down.

The outputs from the generators are used as generic clocks for the peripheral channels. There are 13 peripheral channels. Generator 0 is also the clock source for the main clock, as shown in the GCLK Block Diagram.