Datasheet

78K0/Kx2-L CHAPTER 10 REAL-TIME COUNTER
R01UH0028EJ0400 Rev.4.00 385
Sep 27, 2010
Here is an example of setting the alarm.
Day 12-Hour Display 24-Hour Display Time of Alarm
Sunday
W
W
0
Monday
W
W
1
Tuesday
W
W
2
Wednesday
W
W
3
Thursday
W
W
4
Friday
W
W
5
Saturday
W
W
6
Hour
10
Hour
1
Minute
10
Minute
1
Hour
10
Hour
1
Minute
10
Minute
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,
Friday, 11:59 p.m.
0 1 0 1 0 1 0 3 1 5 9 2 3 5 9
(17) Port mode register 4 (PM4)
This register sets port 4 input/output in 1-bit units.
When using the P40/RTCDIV/RTCCL(/SCK11) and P41/RTC1HZ(/SI11) pins for clock output of real-time counter,
clear PM40 and PM41 and the output latches of P40 and P41 to 0.
PM4 is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to FFH.
Figure 10-18. Format of Port Mode Register 4 (PM4)
Address: FF24H After reset: FFH R/W
Symbol 7 6 5 4 3 2 1 0
PM4 1 1 1 1 1 PM42 PM41 PM40
PM4n P4n pin I/O mode selection (n = 0 to 2)
0 Output mode (output buffer on)
1 Input mode (output buffer off)