Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
538
42023E–SAM–07/2013
ATSAM4L8/L4/L2
Table 22-5.
Clock Sources for CLK_REF
REFSEL
Clock/Oscillator
Description
0
RCSYS
System RC oscillator clock
1
CLK32K
32kHz Output clock from OSC32K or RC32K
2
CLK1K
1kHz Output clock from OSC32K or RC32K
3
GCLK11
Generic clock 11
4-7
Reserved