UPD78F0411GA-GAM-AX Datasheet, PDF (277/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 9 REAL-TIME COUNTER
(16) Alarm week register (ALARMWW)
This register is used to set date of alarm.
ALARMWW can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Caution Set a decimal value of 00 to 23, 01 to 12, or 21 to 32 to this register in BCD code. If a value
outside the range is set, the alarm is not detected.
Figure 9-17. Format of Alarm Week Register (ALARMWW)
Address: FF88H After reset: 00H R/W
Symbol
7
6
ALARMWW
0
WW6
5
WW5
4
WW4
3
WW3
2
WW2
1
WW1
0
WW0
Here is an example of setting the alarm.
Time of Alarm
Day
12-Hour Display
24-Hour Display
Sunday Monday Tuesday Wednesday Thursday Friday Saturday Hour
10
WWWWWWW
WWWWWWW
0
1
2
3
4
5
6
Hour Minute Minute Hour
1 10 1 10
Hour Minute Minute
1 10 1
Every day, 0:00 a.m.
1
1
1
1
1
1
1
1
2
0
0
0
0
0
0
Every day, 1:30 a.m.
1
1
1
1
1
1
1
0
1
3
0
0
1
3
0
Every day, 11:59 a.m.
1
1
1
1
1
1
1
1
1
5
9
1
1
5
9
Monday through
Friday, 0:00 p.m.
0
1
1
1
1
1
0
3
2
0
0
1
2
0
0
Sunday, 1:30 p.m.
1
0
0
0
0
0
0
2
1
3
0
1
3
3
0
Monday, Wednesday,
0
1
0
1
0
1
0
3
1
5
9
2
3
5
9
Friday, 11:59 p.m.
User’s Manual U18698EJ1V0UD
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