DS80C320-ECD DALLAS [Dallas Semiconductor], DS80C320-ECD Datasheet - Page 54

• Manufacturer Part Number: DS80C320-ECD
• Description: High-Speed Microcontroller User Guide
• Manufacturer: DALLAS [Dallas Semiconductor]

Real Time Alarm Minute Register (RTAM)
Real Time Alarm Hour Register (RTAH)
SFR F4h
Bits 7-6
RTAM.5-0
Bits 5-0
SFR F5h
Bits 7-5
RTAH.4-0
Bits 4-0
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset, * = See Description
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset, * = See Description
R-0
R-0
7
0
7
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.
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.
R-0
R-0
6
0
6
0
RTAM.5
RW-*
R-0
5
5
0
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RTAM.4
RTAH.4
RW-*
RW-*
4
4
RTAM.3
RTAH.3
RW-*
RW-*
3
3
High-Speed Microcontroller User’s Guide
RTAM.2
RTAH.2
RW-*
RW-*
2
2
RTAM.1
RTAH.1
RW-*
RW-*
1
1
RTAM.0
RTAH.0
RW-*
RW-*
0
0