Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet
Product codes
ATSAM4L-EK
467
42023E–SAM–07/2013
ATSAM4L8/L4/L2
19.6.8
Wake Enable Register
Name: WER
Access Type:
Read/Write
Offset:
0x1C
Reset Value:
0x00000000
When the SR.BUSY bit is set writes to this register will be discarded and this register will read as zero.
This register enables the wakeup signal from the AST.
• PERn: Periodic n
0: The CPU will not wake up from sleep mode when the selected bit in the prescaler has a 0-to-1 transition.
1: The CPU will wake up from sleep mode when the selected bit in the prescaler has a 0-to-1 transition.
• ALARMn: Alarm n
0: The CPU will not wake up from sleep mode when the counter reaches the selected alarm value.
1: The CPU will wake up from sleep mode when the counter reaches the selected alarm value.
• OVF: Overflow
0: A counter overflow will not wake up the CPU from sleep mode.
1: A counter overflow will wake up the CPU from sleep mode.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
PER0
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
ALARM0
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
OVF