Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Hoja De Datos
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ATSAMD20-XPRO
236
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
18.8.14 Alarm n Value
18.8.14.1 Mode 2
Name:
ALARMn
Offset:
0x18 + n*0x8 [n=0..3]
Reset:
0x00000000
Property:
Write-Protected, Write-Synchronized
The 32-bit value of ALARMn is continuously compared with the 32-bit CLOCK value, based on the masking set by
MASKn.SEL. When a match occurs, the Alarm n interrupt flag in the Interrupt Flag Status and Clear register
(INTFLAG.ALARMn) is set on the next counter cycle, and the counter is cleared if CTRL.MATCHCLR is one.
MASKn.SEL. When a match occurs, the Alarm n interrupt flag in the Interrupt Flag Status and Clear register
(INTFLAG.ALARMn) is set on the next counter cycle, and the counter is cleared if CTRL.MATCHCLR is one.
z
Bits 31:26 – YEAR[5:0]: Year
The alarm year. Years are only matched if MASKn.SEL is 6.
The alarm year. Years are only matched if MASKn.SEL is 6.
z
Bits 25:22 – MONTH[3:0]: Month
The alarm month. Months are matched only if MASKn.SEL is greater than 4.
The alarm month. Months are matched only if MASKn.SEL is greater than 4.
z
Bits 21:17 – DAY[4:0]: Day
The alarm day. Days are matched only if MASKn.SEL is greater than 3.
The alarm day. Days are matched only if MASKn.SEL is greater than 3.
z
Bits 16:12 – HOUR[4:0]: Hour
The alarm hour. Hours are matched only if MASKn.SEL is greater than 2.
The alarm hour. Hours are matched only if MASKn.SEL is greater than 2.
z
Bits 11:6 – MINUTE[5:0]: Minute
The alarm minute. Minutes are matched only if MASKn.SEL is greater than 1.
The alarm minute. Minutes are matched only if MASKn.SEL is greater than 1.
Bit
31
30
29
28
27
26
25
24
YEAR[5:0]
MONTH[3:2]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
MONTH[1:0]
DAY[4:0]
HOUR[4]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
HOUR[3:0]
MINUTE[5:2]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
MINUTE[1:0]
SECOND[5:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0