AT91M55800A Datasheet, PDF (77/227 Pages) ATMEL Corporation – ARM Thumb Microcontrollers

AT91M55800A
RTC Time Alarm Register
Register Name:RTC_TAR
Access Type:Read/Write
Reset State:0x0
Offset: 0x10
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
HOUREN
AMPM
HOUR
15
14
13
12
11
10
9
8
MINEN
MIN
7
6
5
4
3
2
1
0
SECEN
SEC
• SEC: Second Alarm
This field is the alarm field corresponding to the BCD-coded second counter.
• SECEN: Second Alarm Enable
SECEN
0
1
Selected SECEN
The second matching alarm is disabled.
The second matching alarm is enabled.
Code Label
RTC_SEC_ALARM_DIS
RTC_SEC_ALARM_EN
• MIN: Minute Alarm
This field is the alarm field corresponding to the BCD-coded minute counter.
• MINEN: Minute Alarm Enable
MINEN
0
1
Selected MINEN
The minute matching alarm is disabled.
The minute matching alarm is enabled.
Code Label
RTC_MIN_ALARM_DIS
RTC_MIN_ALARM_EN
• HOUR: Hour Alarm
This field is the alarm field corresponding to the BCD-coded hour counter.
• AMPM: AM/PM Indicator
This bit is the AM/PM indicator in 12-Hour mode. It must be written at 0 if HRMOD in RTC_HMR defines 24-Hour mode.
• HOUREN: Hour Alarm Enable
HOUREN
0
1
Selected HOUREN
The hour matching alarm is disabled.
The hour matching alarm is enabled.
Code Label
RTC_HOUR_ALARM_DIS
RTC_HOUR_ALARM_EN
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1745B–ATARM–04/02