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STCF05 Datasheet(PDF) 19 Page - STMicroelectronics

Part # STCF05
Description  High power white LED driver with I²C interface
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STCF05 Datasheet(HTML) 19 Page - STMicroelectronics

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STCF05
I²C bus interface
Doc ID 15257 Rev 4
19/33
acknowledge pulse and starts to send the data to the master. No acknowledge pulse from
the master is required after receiving the data. Then the master generates a STOP bit to
terminate the communication. See Figure 10.
8.9
Reading from multiple registers with incremental addressing
Reading from multiple registers starts in the same way like reading from a single register. As
soon as the first register is read, the register address is automatically incremented. If the
master generates an acknowledge pulse after receiving the data from the first register, then
reading of the next register can start immediately without sending the device address and
the register address again. The last acknowledge pulse before the STOP bit is not required.
See Figure 11.
Figure 10.
Reading from a single register
S
T
A
R
T
DEVICE
ADDRESS
7 bits
A
C
K
W
R
I
T
E
M
S
B
L
S
B
R
/
W
ADDRESS
OF
REGISTER
A
C
K
M
S
B
L
S
B
S
T
A
R
T
A
C
K
R
/
W
R
E
A
D
DEVICE
ADDRESS
7 bits
DATA
L
S
B
S
T
O
P
N
O
A
C
K
SDA LINE
S
T
A
R
T
DEVICE
ADDRESS
7 bits
A
C
K
W
R
I
T
E
M
S
B
L
S
B
R
/
W
ADDRESS
OF
REGISTER
A
C
K
M
S
B
L
S
B
S
T
A
R
T
A
C
K
R
/
W
R
E
A
D
DEVICE
ADDRESS
7 bits
DATA
L
S
B
S
T
O
P
N
O
A
C
K
SDA LINE
Figure 11.
Reading from multiple registers
S
T
A
R
T
DEVICE
ADDRESS
7 bits
A
C
K
W
R
I
T
E
M
S
B
L
S
B
R
/
W
ADDRESS OF
REGISTER i
A
C
K
M
S
B
L
S
B
S
T
A
R
T
A
C
K
R
/
W
R
E
A
D
DEVICE
ADDRESS
7 bits
DATA i
A
C
K
S
T
O
P
L
S
B
DATA i+1
A
C
K
L
S
B
DATA i+2
A
C
K
L
S
B
DATA i+2
L
S
B
DATA i+n
M
S
B
M
S
B
M
S
B
M
S
B
A
C
K
L
S
B
N
O
A
C
K
SDA LINE
S
T
A
R
T
DEVICE
ADDRESS
7 bits
A
C
K
W
R
I
T
E
M
S
B
L
S
B
R
/
W
ADDRESS OF
REGISTER i
A
C
K
M
S
B
L
S
B
S
T
A
R
T
A
C
K
R
/
W
R
E
A
D
DEVICE
ADDRESS
7 bits
DATA i
A
C
K
S
T
O
P
L
S
B
DATA i+1
A
C
K
L
S
B
DATA i+2
A
C
K
L
S
B
DATA i+2
L
S
B
DATA i+n
M
S
B
M
S
B
M
S
B
M
S
B
A
C
K
L
S
B
N
O
A
C
K
SDA LINE



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