Datasheet
26
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
9.2 Clock Generator
The Clock Generator embeds one low-power RC Oscillator, one Main Oscillator and one PLL with the following 
characteristics:
 RC Oscillator ranges between 22 KHz and 42 KHz
 Main Oscillator frequency ranges between 3 and 20 MHz
 Main Oscillator can be bypassed
 PLL output ranges between 80 and 200 MHz
It provides SLCK, MAINCK and PLLCK.
Figure 9-2. Clock Generator Block Diagram 
Embedded 
RC
Oscillator
Main 
Oscillator
PLL and 
Divider
Clock Generator
Power 
Management 
Controller
XIN
XOUT
PLLRC
Slow Clock 
SLCK
Main Clock
MAINCK
PLL Clock
PLLCK
Control
Status










