DS80C320-MCG Datasheet, PDF (54/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

Real Time Alarm Minute Register (RTAM)
7
6
5
4
SFR F4h
0
0
RTAM.5 RTAM.4
R-0
R-0
RW-* RW-*
High-Speed Microcontroller User’s Guide
3
RTAM.3
RW-*
2
RTAM.2
RW-*
1
RTAM.1
RW-*
0
RTAM.0
RW-*
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset, * = See Description
Bits 7-6
RTAM.5-0
Bits 5-0
Reserved. These bits will be 0 when read.
Real Time Alarm Minute. These bits represent the minute alarm which will be
compared against the RTC Minute register (RTCM;FCh). The ability of a match
between the two registers to cause an alarm is controlled by the RTC Minute
Register Compare Enable bit (RTCC.5). This register should only be loaded
with values from 0 to 3Bh (0 to 59 minutes). The contents of this register will be
indeterminate following a no-battery reset (except bits 7, 6), and unchanged by
all other forms of reset.
Real Time Alarm Hour Register (RTAH)
7
6
5
4
SFR F5h
0
0
0
RTAH.4
R-0
R-0
R-0
RW-*
3
RTAH.3
RW-*
2
RTAH.2
RW-*
1
RTAH.1
RW-*
0
RTAH.0
RW-*
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset, * = See Description
Bits 7-5
RTAH.4-0
Bits 4-0
Reserved. These bits will be 0 when read.
Real Time Alarm Hour. These bits represent the hour alarm which will be
compared against the RTC Hour register (RTCH;FDh). The ability of a match
between the two registers to cause an alarm is controlled by the RTC Hour
Register Compare Enable bit (RTCC.4). This register should only be loaded
with values from 0 to 17h (0 to 23 hours). The day of week bits DOW2-0,
located in RTCH.7-5 do not have a corresponding alarm feature. The contents
of this register will be indeterminate following a no-battery reset (except bits 7,
6, 5), and unchanged by all other forms of reset.
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