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1745D–ATARM–04-Nov-05
AT91M55800A
13.3.5 RTC Time Alarm Register
Register Name: RTC_TAR
Access Type: Read/Write
Reset State: 0x0
Offset: 0x10
• SEC: Second Alarm
This field is the alarm field corresponding to the BCD-coded second counter.
• SECEN: Second Alarm Enable
• MIN: Minute Alarm
This field is the alarm field corresponding to the BCD-coded minute counter.
• MINEN: Minute Alarm Enable
• 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
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
76543210
SECEN SEC
SECEN Selected SECEN Code Label
0 The second matching alarm is disabled. RTC_SEC_ALARM_DIS
1 The second matching alarm is enabled. RTC_SEC_ALARM_EN
MINEN Selected MINEN Code Label
0 The minute matching alarm is disabled. RTC_MIN_ALARM_DIS
1 The minute matching alarm is enabled. RTC_MIN_ALARM_EN
HOUREN Selected HOUREN Code Label
0 The hour matching alarm is disabled. RTC_HOUR_ALARM_DIS
1 The hour matching alarm is enabled. RTC_HOUR_ALARM_EN