Table of Contents
Advertisement
(12) RTC (Real time clock)
Symbol
Name
Address
Second
SECR
320H
register
Minute
MINR
321H
register
Hour
HOURR
322H
register
Day
DAYR
323H
register
Date
DATER
324H
register
325H
Month
MONTHR
register
Page 0
Page 1
326H
Year
YEARR
register
Page 0 80 years
Page 1
327H
Page
PAGER
(Prohibit
register
RMW)
328H
Reset
RESTR
(Prohibit
register
RMW)
7
6
5
SE6
SE5
0 is read
40 s
20 s
MI6
MI5
0 is read
40 min
20 min
HO5
0 is read
20 H
(PM/AM)
0 is read
DA5
0 is read
20 days
0 is read
YE7
YE6
YE5
40 years
20 years
0 is read
INTENA
R/W
0
INTRTC
0 is read
0: Disable
1: Enable
DIS1HZ
DIS16HZ
RSTTMR
1 Hz
16 Hz
1: Clock
0: Enable
0: Enable
reset
1: Disable
1: Disable
91C824-253
4
3
2
SE4
SE3
SE2
R/W
Undefined
10 s
8 s
4 s
MI4
MI3
MI2
R/W
Undefined
10 min
8 min
4 min
HO4
HO3
HO2
R/W
Undefined
10 H
8 H
4 H
WE2
W2
DA4
DA3
DA2
R/W
Undefined
10 days
8 days
4 days
MO4
MO3
MO2
R/W
Undefined
10 month
8 month
4 month
0 is read
YE4
YE3
YE2
R/W
Undefined
10 years
8 years
4 years
Adjust
ENATMR
ENAALM
W
R/W
Undefined
Undefined
0:Don't
Clock
Alarm
care
0: Disable
0: Disable
1: Adjust
1: Enable
1: Enable
RSTALM
RE3
RE2
W
Undefined
1:Alarm
Always write 0
reset
TMP91C824
1
0
SE1
SE0
2 s
1 s
MI1
MI0
2 min
1min
HO1
HO0
2 H
1 H
WE1
WE0
R/W
Undefined
W1
W0
DA1
DA0
2 days
1 day
MO1
MO0
2 month
1 month
0: Indicator for
1: Indicator for
YE1
YE0
2 years
1 year
Leap year setting
PAGE
R/W
Undefined
0 is read
select
PAGE
RE1
RE0
2008-02-20
Advertisement
Table of Contents
