Datasheet

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)
050
175
2100
3125
4150
5175
6200
7225
8250
9275
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.
2Reserved
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.
6Reserved
7Reserved