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CMS32L051 User Manual |Chapter 7 Real-Time Clock
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The relationship between the config value of the AMPM bit, the value of the hour count register (HOUR),
and the time is shown in Table 7-2.
Table 7-2 Representation of the time bits
24-hour (AMPM=1)
12-hour (AMPM=0)
Time
HOUR register
Time
HOUR register
0 o'clock
00H
AM 12 o'clock
12H
1 o'clock
01H
AM 1 o'clock
01H
2 o'clock
02H
AM 2 o'clock
02H
3 o'clock
03H
AM 3 o'clock
03H
4 o'clock
04H
AM 4 o'clock
04H
5 o'clock
05H
AM 5 o'clock
05H
6 o'clock
06H
AM 6 o'clock
06H
7 o'clock
07H
AM 7 o'clock
07H
8 o'clock
08H
AM 8 o'clock
08H
9 o'clock
09H
AM 9 o'clock
09H
10 o'clock
10H
AM 10 o'clock
10H
11 o'clock
11H
AM 11 o'clock
11H
12 o'clock
12H
PM 12 o'clock
32H
13 o'clock
13H
PM 1 o'clock
21H
14 o'clock
14H
PM 2 o'clock
22H
15 o'clock
15H
PM 3 o'clock
23H
16 o'clock
16H
PM 4 o'clock
24H
17 o'clock
17H
PM 5 o'clock
25H
18 o'clock
18H
PM 6 o'clock
26H
19 o'clock
19H
PM 7 o'clock
27H
20 o'clock
20H
PM 8 o'clock
28H
21 o'clock
21H
PM 9 o'clock
29H
22 o'clock
22H
PM 10 o'clock
30H
23 o'clock
23H
PM 11 o'clock
31H
When the AMPM bit is 0, the value of the HOUR register is 12 hours; When the AMPM bit is 1, the
value of the HOUR register is 24 hours.
At 12 hours, bit5 of the HOUR register indicates morning/afternoon. The morning (AM) is 0 and the
afternoon (PM) is 1.