Renesas rl78 User Manual
RL78/G1A
CHAPTER 7 REAL-TIME CLOCK
Here is an example of setting the alarm.
Jul 04, 2013
Day
12-Hour Display
24-Hour Display
Time of Alarm
Hour
10
Hour
1
Minute
1
Hour
10
Hour
1
Monday
W
W
1
Tuesday
W
W
2
Sunday
W
W
0
Friday
W
W
5
Minute
10
Minute
10
Minute
1
Saturday
W
W
6
Thursday
W
W
4
Wednesday
W
W
3
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
7.3.16 Port mode register 3 (PM3)
<R>
The PM3 register can be set by a 1-bit or 8-bit manipulation instruction.
Reset signal generation sets this register to FFH.
When using the port 3 as the RTC1HZ pin for output of 1 Hz, set the PM30 bit to 0.
Figure 7-17. Format of Port Mode Register 3 (PM3)
Address: FFF23H After reset: FFH R/W
Symbol
7 6 5 4 3 2 1 0
PM3
1 1 1 1 1 1
PM31
PM30
7.3.17 Port register 3 (P3)
<R>
The P3 register can be set by a 1-bit or 8-bit manipulation instruction.
Reset signal generation sets this register to 00H.
When using the port 3 as 1-Hz output to the RTC1Hz pin, set the P30 bit to 0.
Figure 7-18. Format of Port Register 3 (P3)
Address: FFF03H After reset: 00H R/W
Symbol
7 6 5 4 3 2 1 0
P3 0 0 0 0 0 0
P31
P30
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