Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
181
42023E–SAM–07/2013
ATSAM4L8/L4/L2
Select current driven into the crystal.
• MODE: Oscillator Mode
• EN1K: 1 KHz output Enable
0: The 1 KHz output is disabled.
1: The 1 KHz output is enabled.
• EN32K: 32 KHz output Enable
0: The 32 KHz output is disabled.
1: The 32 KHz output is enabled.
• OSC32EN: 32 KHz Oscillator Enable
0: The 32 KHz Oscillator is disabled
Table 12-5.
Crystal Current selection
SELCURR
Current Value (nA)
0
50
1
75
2
100
3
125
4
150
5
175
6
200
7
225
8
250
9
275
10
300 (recommended value)
11
325
12
350
13
375
14
400
15
425
Table 12-6.
Operation Mode for 32 KHz Oscillator
MODE
Description
0
External clock connected to XIN32
1
Crystal mode. Crystal is connected to XIN32/XOUT32.
2
Reserved
3
Crystal mode with amplitude controlled mode. Crystal is connected to XIN32/XOUT32.
4
Crystal and high current mode. Crystal is connected to XIN32/XOUT32.
5
Crystal with high current mode and amplitude controlled mode. Crystal is connected to XIN32/XOUT32.
6
Reserved
7
Reserved