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Field
31–13
Reserved, must be cleared.
12–8
Hours setting of the alarm. Set to any value between 0 and 23 (0x17).
HOURS
7–6
Reserved, must be cleared.
5–0
Minutes setting of the alarm. Set to any value between 0 and 59 (0x3B).
MINUTES
25.3.4
RTC Seconds Alarm Register (RTC_ALRM_SEC)
The RTC_ALRM_SEC register configures the seconds setting for the alarm. The alarm settings can be
read or written at any time.
Address: 0xFC0A_800C (RTC_ALRM_SEC)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 25-5. RTC Seconds Alarm Register (RTC_ALRM_SEC)
Field
31–6
Reserved, must be cleared.
5–0
Seconds setting of the alarm. Set to any value between 0 and 59 (0x3B).
SECONDS
25.3.5
RTC Control Register (RTC_CR)
The RTC_CR register enables the real-time clock module and software reset, and specifies the reference
frequency information for the prescaler.
Address: 0xFC0A_8010 (RTC_CR)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Freescale Semiconductor
Table 25-5. RTC_ALRM_HM Field Descriptions
Description
Table 25-6. RTC_ALRM_SEC Field Descriptions
Description
Figure 25-6. RTC Control Register (RTC_CR)
MCF5329 Reference Manual, Rev 3
Real-Time Clock
Access: User read/write
8
7
6
5
4
3
2
1
0
SECONDS
Access: User read/write
8
7
6
5
4
3
2
1
0
0 0 0 0
EN XTL
SWR
1
0 0 0 0 0 0
0
25-5
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