TMP91C824
91C824-199
2008-02-20
3.13.3 Control
Registers
Table 3.13.1 PAGE 0 (Clock function) Registers
Symbol
Address
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Function Read/Write
SECR 0320H
40 s
20 s
10 s
8 s
4 s
2 s
1 s
Second column
R/W
MINR 0321H
40 min. 20 min.
10 min.
8 min.
4 min.
2 min.
1 min.
Minute column
R/W
HOURR
0322H
20
/PM/AM
10 hours 8 hours
4 hours
2 hours
1 hour
Hour column
R/W
DAYR 0323H
W2 W1 W0
Day of the week
column
R/W
DATER 0324H
Day 20
Day 10
Day 8
Day 4
Day 2
Day 1
Day column
R/W
MONTHR 0325H
Oct. Aug.
Apr. Feb. Jan. Month
column R/W
YEARR
0326H
Year 80 Year 40 Year 20 Year 10
Year 8
Year 4
Year 2
Year 1
Year column
(Lower two
columns)
R/W
PAGER 0327H
Interrupt
enable
Adjust-
ment
function
Clock
enable
Alarm
enable
PAGE
setting
PAGE register
W, R/W
RESTR 0328H
1HZ
enable
16HZ
enable
Clock
reset
Alarm
reset
Always write “0”
Reset register
Write only
Note: As for SECR, MINR, HOURR, DAYR, MONTHR, YEARR of PAGE0, current state is read when
read it.
Table 3.13.2 PAGE 1 (Alarm function) Registers
Symbol
Address
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Function Read/Write
SECR
0320H
R/W
MINR
0321H
40 min. 20 min.
10 min.
8 min.
4 min.
2 min.
1 min.
Minute column
for alarm
R/W
HOURR 0322H
20
/PM/AM
10 hours 8 hours
4 hours
2 hours
1 hour
Hour column
for alarm
R/W
DAYR
0323H
W2
W1
W0
Day of the week
column for
alarm
R/W
DATER
0324H
Day 20
Day 10
Day 8
Day 4
Day 2
Day 1
Day column for
alarm
R/W
MONTHR
0325H
24/12
24-hour clock
mode
R/W
YEARR
0326H
Leap-year
setting Leap-year
mode
R/W
PAGER 0327H
Interrupt
enable
Clock
enable
Alarm
enable
PAGE
setting
PAGE register
W, R/W
RESTR 0328H
1HZ
enable
16HZ
enable
Clock
reset
Alarm
reset
Always write “0”
Reset register
Write only
Note: As for MINR, HOURR, DAYR, MONTHR, YEARR of PAGE1, current state is read when read it.