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Chapter 12
Real Time Clock (RTC)
Alarm 1 Hours Setting Register (AL1IRQH: 0x03ED9)
bp
Bit name
At reset
Access
bp
Bit name
7
6
AL1IRQH6
5 to 0
AL1IRQH5-0
Alarm 1 Day Setting Register (AL1IRQD: 0x03EDA)
bp
Bit name
At reset
Access
bp
Bit name
7 to 6
5 to 0
AL1IRQD5-0
XII - 8
Control Registers
7
6
-
AL1IRQH6
0
0
R
R/W
R/W
-
Always read as 0.
Alarm 1 "AM/PM" setting
0: AM
1: PM
* This bit must be set in 12-hour clock mode.
When 24-hour clock mode, this bit must be set to "0".
Alarm 1 "Hour" setting
<24-hour clock mode>
Set a value within the range of "00" to "23" using the BCD format.
<In 12-hour clock>
Set a value within the range of "00" to "11" using the BCD format.
* The value which doesn't exist must not be set.
7
6
-
-
0
0
R
R
R/W
-
Always read as 0.
Alarm 1 "Day" setting
Set a value within the range of "01" to "31" using the BCD format.
* The value which doesn't exist must not be set.
5
4
0
0
R/W
R/W
Description
5
4
0
0
R/W
R/W
Description
3
2
AL1IRQH5-0
0
0
R/W
R/W
3
2
AL1IRQD5-0
0
0
R/W
R/W
1
0
0
0
R/W
1
0
0
0
R/W
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