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參數(shù)資料
| 型號： | R2025D |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | High precision I2C-Bus Real-Time Clock Module |
| 中文描述： | REAL TIME CLOCK, DSO20 |
| 封裝： | 6.10 X 5 MM, 1.30 MM HEIGHT, SON-22/20 |
| 文件頁數(shù)： | 25/47頁 |
| 文件大?。?/td> | 524K |
| 代理商： | R2025D |
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R2025S/D
25
S
0
A
A
Data
/A
P
Example 1 of Data Read (when data is read from 2h to 4h)
Master to slave
Slave to master
S
Start Condition
Sr
Repeated Start
Condition
A
A
/A
Acknowledge signal
Address
Pointer
←
2h
Repeated Start Condition
0
1
0
0
0
1
1
0 0 0
0
0
0
1
Transmission
Format
Register
←
0h
Sr
1
0
A
Slave Address
←
(0110010)
1
0
0 0
0
1
A
Data
A
Data
Reading of data from
the internal address 3h
R/W=1(Read)
R/W=0(Write)
P
Stop Condition
Slave Address
←
(0110010)
Reading of data from
the internal address 4h
Reading of data from
the internal address 2h
1
The second method to reading data from the internal register is to start reading immediately after writing to the
Internal Address Pointer and the Transmission Format Register. Although this method is not based on I
2
C-Bus
standard in a strict sense it still effective to shorten read time to ease load to the master. Set 4h to the transmission
format register when this method used.
Example 2 of data read (when data is read from internal addresses Eh to 1h)
1
S
A
A
Data
/A P
Master to slave
Slave to Master
S
Start Condition
A
A
/A
Acknowledge Signal
Address
Pointer
←
Eh
0 1
1
0 0
0
1
Transmission
Format
Register
←
4h
1
0
A
Slave Address
←
(0110010)
1
0
0 0
0
1
A
Data
A
Data
Reading of data from
the internal address Eh
R/W=0(Write)
P
Stop Condition
Data
Reading of data from
the internal address Fh
Reading of data from
the internal address 0h
Reading of data from
the internal address 1h
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
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