Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
254
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
18.8.22 Clock Value - MODE2
Name:
CLOCK
Offset:
0x10
Reset:
0x00000000
Property:
Read-Synchronized, Write-Protected, Write-Synchronized
z
Bits 31:26 – YEAR[5:0]: Year
The year offset with respect to the reference year (defined in software).
The year is considered a leap year if YEAR[1:0] is zero.
The year offset with respect to the reference year (defined in software).
The year is considered a leap year if YEAR[1:0] is zero.
z
Bits 25:22 – MONTH[3:0]: Month
1 – January
2 – February
...
12 – December
1 – January
2 – February
...
12 – December
z
Bits 21:17 – DAY[4:0]: Day
Day starts at 1 and ends at 28, 29, 30 or 31, depending on the month and year.
Day starts at 1 and ends at 28, 29, 30 or 31, depending on the month and year.
z
Bits 16:12 – HOUR[4:0]: Hour
When CTRL.CLKREP is zero, the Hour bit group is in 24-hour format, with values 0-23. When CTRL.CLKREP is
one, HOUR[3:0] has values 1-12 and HOUR[4] represents AM (0) or PM (1).
When CTRL.CLKREP is zero, the Hour bit group is in 24-hour format, with values 0-23. When CTRL.CLKREP is
one, HOUR[3:0] has values 1-12 and HOUR[4] represents AM (0) or PM (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