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