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參數(shù)資料
| 型號： | S-3531A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實時時鐘芯片) |
| 中文描述： | CMOS實時時鐘IC支持一個IIC總線（支持IIC總線的實時時鐘芯片的CMOS） |
| 文件頁數(shù)： | 7/31頁 |
| 文件大?。?/td> | 185K |
| 代理商： | S-3531A |
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REAL-TIME CLOCK
S-3531A
6
Seiko Instruments Inc.
1-7.
Data writing
After a start condition is detected from the outside, the device code and command are received. At this point, the
real-time data writing mode or other register writing mode is entered when the read/write bit is "0". Data must be
entered in the order from LSB of the real-time data writing mode or status register writing mode.
In real-time data writing, the count of a calender and time is reset when the ACK signal rises following the real-time
writing command, and any update operation is disabled. After a minute data is received, the end of a month is
corrected while a second data is imported. Then, the count is started when the ACK signal rises after the second
data is received.
S
T
A
R
T
0
1 1
0
W
R
I
T
E
S
T
O
P
DEVICE
ADDRES
R
/
W
M
S
B
SDA LINE
0
1 0
A
C
K
L
S
B
A
C
K
A
C
K
0
Command
Real-time data
access 1
command
(1)Real-time data writing 1
Year data
L
S
B
M
S
B
L
S
B
M
S
B
Second data
S
T
A
R
T
0
1 1
0
S
T
O
P
DEVICE
ADDRES
R
/
W
M
S
B
SDA LINE
0
1 1
A
C
K
L
S
B
A
C
K
A
C
K
0
Command
Real-time data
access 2 command
(2)Real-time data writing 2
Hour data
L
S
B
M
S
B
L
S
B
M
S
B
Second data
S
T
A
R
T
0
1 1
0
DEVICE
ADDRES
R
/
W
M
S
B
SDA LINE
0
1
A
C
K
L
S
B
A
C
K
0
Command
Status register
access command
(3)Status register writing
Status data
L
S
B
M
S
B
0
S
T
O
P
W
R
I
T
E
W
R
I
T
E
Figure 8 Write communication
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