Rtc Alarm Register; Table 11-4 Rtc Alarm Register Description - Motorola MC68VZ328 User Manual

11.2.3

RTC Alarm Register

The real-time clock alarm (RTCALRM) register is used to configure the alarm. The hours, minutes, and
seconds can be read or written at any time. After a write, the current time assumes the new values. The
settings for the RTCTIME register are described in Table 11-4.
RTCALRM
BIT
30 29
31
TYPE
0 0
RESET
15 14 13
TYPE
0 0
RESET
Name
Reserved Reserved
Bits 31–29
HOURS Hours—These bits indicate the value of the
Bits 28–24 hours field in the current alarm setting.
Reserved Reserved
Bits 23–22
MINUTES Minutes—These bits indicate the value of
Bits 21–16 the minutes field in the current alarm setting.
Reserved Reserved
Bits 15–6
SECONDS Seconds—These bits indicate the value of
Bit 5–0 the seconds field in the current alarm setting.
RTC Alarm Register
28 27 26 25
HOURS
rw rw rw rw
0 0 0 0
12 11 10
0 0 0 0
Table 11-4. RTC Alarm Register Description
Description
Real-Time Clock
24 23 22 21
rw rw
0 0 0 0 0
0x00000000
9 8 7 6 5
rw
0 0 0 0 0
0x00000000
These bits are reserved and should be set to
0.
This field can be set to any value between 0
and 23. Default is value 0.
These bits are reserved and should be set to
0.
This field can be set to any value between 0
and 59. Default is value 0.
These bits are reserved and should be set to
0.
This field can be set to any value between 0
and 59. Default is value 0.
Programming Model
0x(ff)FFFB04
BIT
20 19 18 17
16
MINUTES
rw rw rw rw rw
0 0 0 0
4 3 2 1
SECONDS
rw rw rw rw rw
0 0 0 0
Setting
11-7
0
0
0