Torwards
AT8563
be set. This will indicate that the time may have been corrupted.
Fig 4 Voltage-low detection
2.7
Register organization
Table 4
Registers overview
b6
0
0
-
-
b5
STOP
0
-
-
b4
0
TI/TP
-
-
b3
TESTC
AF
-
-
b2
0
TF
-
-
b1
0
AIE
FD1
TD1
b0
0
TIE
FD0
TD0
Register name
Control/Status 1
Control/Status 2
CLKOUT frequency
Timer control
Timer countdownvalue
b7
TEST1
0
FE
TE
Address
00H
01H
0DH
0EH
0FH
<timer countdown value>
Note: Bit positions labeled as ‘− ’are not implemented; those labeled with ‘0’ should always be written with
logic 0.
Table 5
Address
Register name
Seconds
BCD formatted registers overview
b7
VL
-
-
-
-
C
b6
b5
b4
b3
b2
b1
b0
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
ten seconds(0-5)
ten minutes(0-5)
-
-
-
-
ten hours
(0-2)
ten days(0-3)
-
-
-
ten month
(0-1)
seconds(0-9)
minutes(0-9)
hours(0-9)
days(0-9)
-
weekdays(0-6)
month(0-9)
years(0-9)
minutes(0-9)
hours(0-9)
days(0-9)
-
weekdays(0-6)
minutes
hours
days
weekday
months/century
years
minute alarm
hour alarm
day alarm
weekday alarm
ten years(0-9)
———
AE
ten minutes(0-5)
-
-
-
ten hours
(0-2)
ten days(0-3)
-
-
———
AE
AE
———
———
AE
Note: Bit positions labelled as ‘− ’are not implemented.
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5
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