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Chapter 12
Real Time Clock (RTC)
Alarm 0 Hours Setting Register (AL0IRQH: 0x03ED5)
bp
7
Bit name
-
At reset
0
Access
R
bp
7
6
AL0IRQH6
5 to 0
AL0IRQH5-0
Alarm 0 Day of Week Setting Register (AL0IRQW: 0x03ED6)
bp
Bit name
At reset
Access
bp
7 to 3
2 to 0
AL0IRQW2-0
Alarm 0 interrupt is not guaranteed if the prohibited value is set in AL0IRQMI, AL0IRQH, and
AL0IRQW.
RTCAL0IRQ, AL0IRQMI, AL0IRQH and AL0IRQW must be set when
..
RTCAL0IRQ.AL0IRQSET is "0".
..
XII - 6
Control Registers
6
5
AL0IRQH6
0
0
R/W
R/W
Bit name
-
Always read as 0.
Alarm 0 "AM/PM" setting
0: AM
1: PM
* This bit must be set in 12-hour clock mode.
In 24-hour clock mode, this bit must be set to "0".
Alarm 0 "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
Bit name
-
Always read as 0.
Alarm 0 "Day of the week" setting
000: Sunday
001: Monday
010: Tuesday
011: Wednesday
100: Thursday
101: Friday
110: Saturday
111: Setting Prohibited
4
3
0
0
R/W
R/W
Description
5
4
-
-
0
0
R
R
Description
2
AL0IRQH5-0
0
R/W
R/W
3
2
-
AL0IRQW2-0
0
0
R
R/W
R/W
1
0
0
0
R/W
1
0
0
0
R/W
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