參數(shù)資料
型號(hào): S-35399A03-J8T2G
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝: LEAD FREE, SOP-8
文件頁(yè)數(shù): 27/53頁(yè)
文件大?。?/td> 472K
代理商: S-35399A03-J8T2G
2-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35399A03
Seiko Instruments Inc.
33
The followings are Read/Write in the S-35399A03.
(1) Data Read in S-35399A03
After detecting a start condition, the S-35399A03 receives device code and command. The S-35399A03 enters the
Read-data mode by the Read/Write bit “1”. The data is output from B7 in 1-byte. Input an acknowledgment signal
from the master device every moment that the S-35399A03 outputs 1-byte data. However, do not input an
acknowledgment signal (input NO_ACK) for the last data-byte output from the master device. This procedure
notifies the completion of Read. Next, input a stop condition to the S-35399A03 to finish access.
18
9
1
ACK
0
1
0
ST
AR
T
SCL
SDA
B7
B0
Code + command
NO_A
CK
ST
O
P
: Output from S-35399A03
: Input from master device
0 1
R/W
Input NO_ACK after the 1st byte
of data has been output.
1-byte data
Figure 35 Example of Data Read 1 (1-Byte Data Register)
36
9
1
ACK
1
0
1
0
ST
A
R
T
SCL
SDA
B7
B0
B7
B0
NO_ACK
ST
OP
1
0
ACK
B0
B7
18
27
ACK
1
: Output from S-35399A03
: Input from master device
Input NO_ACK after the 3rd byte of data
has been output.
R/W
3-byte data
Code + command
Figure 36 Example of Data Read 2 (3-Byte Data Register)
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