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BU1574GUW Datasheet(PDF) 9 Page - Rohm

No. de pieza BU1574GUW
Descripción Electrónicos  Real Time Video Processor IC
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Fabricante Electrónico  ROHM [Rohm]
Página de inicio  http://www.rohm.com
Logo ROHM - Rohm

BU1574GUW Datasheet(HTML) 9 Page - Rohm

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Technical Note
9/12
BU1574GUW
www.rohm.com
2009.06 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
9. I
2C Interface format
The slave address is 42h when I2CDEV0 = 0 and 43h when I2CDEV0 = 1.
When both of the write and read accesses are respectively executed successively 2 times or more, the sub-address is
automatically incremented.
SDA
SDC
Data transfer
1-7
8
S
1-789
STOP
condition
91-7
8
9
P
ACK
ACK
ACK
Sub address
Data
Slave
address
R/W
START
condition
Write
sequence
Read
sequence
S = START condition
A(S) = acknowledge by slave
A(S) = not acknowledge by slave
P = STOP condition
A(M) = acknowledge by master
A(M) = not acknowledge by master
S
Slave address
(42h or 43h)
W
(0)
A(S) Sub address A(S)
Data
A(S)
Data
A(S)
Data
A(S)/
A(S)
A(M)/
A(M)
P
P
S
Slave address
(42h or 43h)
A(S) Sub address A(S) S
Slave address
(42h or 43h)
W
(0)
R
(1)
A(M)
Data
A(S)
Data
Fig.9 I
2C Interface format
Timing chart
1. Data input interface timing
CAMVSI
CAMHSI
CAMDI0
-CAMDI7
CAMCKI
(CKPOL-“0”)
CAMCKI
(CKPOL-“1”)
tDS
tDH
Fig.10 Data input interface timing
Symbol
Descriptions
MIN
TYP
MAX
Unit
tDS
Setup time to CAMCKI rising / falling edge
8
-
-
ns
tDH
Hold time to CAMCKI rising / falling edge
8
-
-
ns


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