STCF05 STMicroelectronics, STCF05 Datasheet - Page 19

• Manufacturer Part Number: STCF05
• Description: HIGH POWER WHITE LED DRIVER WITH I2C INTERFACE
• Manufacturer: STMicroelectronics

Specifications of STCF05

• Flash Mode: up to 400 mA
• Torch Mode: up to 120 mA

STCF05
Figure 10. Reading from a single register
8.9
Figure 11. Reading from multiple registers
S
S
T
T
A
A
R
R
T
T
M
M
S
S
B
B
ADDRESS
ADDRESS
DEVICE
DEVICE
7 bits
7 bits
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
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
S
S
B
B
L
L
R
R
W
W
W
W
R
R
T
T
E
E
I
I
/
/
A
A
C
C
K
K
M
M
S
S
B
B
Figure
ADDRESS OF
ADDRESS OF
REGISTER i
REGISTER i
S
S
T
T
A
A
R
R
T
T
M
M
S
S
B
B
ADDRESS
ADDRESS
DEVICE
DEVICE
11.
7 bits
7 bits
S
S
B
B
L
L
A
A
C
C
K
K
S
S
A
A
R
R
T
T
T
T
ADDRESS
ADDRESS
L
L
S
S
B
B
DEVICE
DEVICE
7 bits
7 bits
W
W
R
R
I
I
T
T
E
E
R
R
/
/
W
W
A
A
C
C
K
K
M
M
S
S
B
B
R
R
E
E
A
A
D
D
R
R
W
W
/
/
ADDRESS
ADDRESS
REGISTER
REGISTER
A
A
C
C
K
K
OF
OF
Doc ID 15257 Rev 4
DATA i
DATA i
SDA LINE
SDA LINE
SDA LINE
SDA LINE
Figure
L
L
S
S
B
B
A
A
C
C
K
K
L
L
S
S
B
B
A
A
C
C
K
K
S
S
T
T
A
A
R
R
T
T
M
M
S
S
B
B
10.
ADDRESS
ADDRESS
DATA i+1
DATA i+1
DEVICE
DEVICE
7 bits
7 bits
S
S
B
B
L
L
A
A
C
C
K
K
M
M
S
S
B
B
R
R
E
E
A
A
D
D
R
R
/
/
W
W
A
A
C
C
K
K
DATA i+2
DATA i+2
DATA
DATA
L
L
S
S
B
B
A
A
C
C
K
K
M
M
S
S
B
B
DATA i+2
DATA i+2
L
L
S
S
B
B
N
N
O
O
A
A
C
C
K
K
S
S
T
T
O
O
P
P
L
L
S
S
B
B
A
A
C
C
K
K
I²C bus interface
M
M
S
S
B
B
DATA i+n
DATA i+n
L
L
S
S
B
B
N
N
O
O
A
A
C
C
K
K
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S
S
T
T
O
O
P
P