Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet
Product codes
ATSAM4L-EK
180
42023E–SAM–07/2013
ATSAM4L8/L4/L2
12.7.8
32KHz Oscillator Control Register
Name:
OSCCTRL32
Access Type:
Read/Write
Reset Value:
0x00000004
Note: This register is only reset by Power-On Reset
• RESERVED
This bit must always be written to zero.
• STARTUP: Oscillator Start-up Time
Select start-up time for 32 KHz oscillator
• SELCURR: Current Selection
31
30
29
28
27
26
25
24
RESERVED
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
STARTUP[2:0]
15
14
13
12
11
10
9
8
SELCURR[3:0]
-
MODE[2:0]
7
6
5
4
3
2
1
0
-
-
-
-
EN1K
EN32K
-
OSC32EN
Table 12-4.
Start-up Time for 32 KHz Oscillator
STARTUP
Number of RCSYS Clock
Cycle
Cycle
Approximative Equivalent Time
(RCOSC = 115 kHz)
(RCOSC = 115 kHz)
0
0
0
1
128
1.1 ms
2
8192
72.3 ms
3
16384
143 ms
4
65536
570 ms
5
131072
1.1 s
6
262144
2.3 s
7
524288
4.6 s