參數(shù)資料
型號(hào)： S-3531AECA-TB-01
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, UUC8
封裝： DIE-8
文件頁(yè)數(shù)： 25/29頁(yè)
文件大?。?/td> 236K
代理商： S-3531AECA-TB-01
REAL-TIME CLOCK
S-3531A
4
Seiko Instruments Inc.
n
n Description of Operation
1.
Serial interface
S-3531A receives various commands through the I
2C-BUS-based serial interface to read/write data.
The method of I
2C-BUS-based transfer is described here.
1-1. Start condition
Changing the SDA line from “H” to “L” when the SCL line is “H” activates the start condition.
All the operations begin at the start condition.
1-2. Stop condition
Changing the SDA line from “L” to “H” when the SCL line is “H” activates the stop condition.
During a read sequence, any read operation is stopped and a device enters its stand-by mode
when a stop condition is received.
tSU.STA
tHD.STA
tSU.STO
Start condition
Stop condition
SCL
SDA
Figure 3 Start/Stop condition
1-3. Data transfer
When the SDA line is changed while the SCL line is on “L”, data transfer is performed.
When the SDA line is changed while the SCL line is on “H”, a start or stop condition is recognized.
tSU.DAT
tHD.DAT
SCL
SDA
Figure 4 Data transfer timing
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