Data Sheet

265
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
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.
z Bits 25:22 – MONTH[3:0]: Month
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.
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).
Bit 3130292827262524
YEAR[5:0] MONTH[3:2]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000
Bit 2322212019181716
MONTH[1:0] DAY[4:0] HOUR[4]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000
Bit 151413121110 9 8
HOUR[3:0] MINUTE[5:2]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000
Bit 76543210
MINUTE[1:0] SECOND[5:0]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000