Техническая Спецификация для Atmel MCU Evaluation Kit AT91SAM7X-EK AT91SAM7X-EK

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SAM7X Series [SUMMARY DATASHEET]
6120IS–ATARM–14-Nov-13
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
Di ider
Cloc Generator
Power
Management
Controller
XIN
XOUT
PLLRC
Slow Cloc
SLCK
Main Cloc
MAINCK
PLL Cloc
PLLCK
Control
Status