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ADP1649ACBZ-R7 Datenblatt(PDF) 18 Page - Analog Devices

Teilenummer ADP1649ACBZ-R7
Bauteilbeschribung  1.0 A LED Flash Driver with I2C-Compatible Interface
PDF  28 Pages
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP1649ACBZ-R7 Datenblatt(HTML) 18 Page - Analog Devices

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ADP1649
Data Sheet
Rev. 0 | Page 18 of 28
I²C INTERFACE
The ADP1649 includes an I2C-compatible serial interface for
control of the LED current, as well as for readback of the system
status registers. The I2C chip address is 0x30 (0x60 in write
mode and 0x61 in read mode). Additional I2C addresses are
available on request.
Figure 39 illustrates the I2C write sequence to a single register.
The subaddress content selects which of the nine ADP1649
registers is written to. The ADP1649 sends an acknowledgment
to the master after the 8-bit data byte has been written. Figure 40
shows the I2C read sequence of a single register. See the I²C
Register Map section for a list of register definitions.
Figure 39. I2C Single Register Write Sequence
Figure 40. I2C Single Register Read Sequence
SUBADDRESS
CHIP ADDRESS
0
1
1
0
0
0
0
0
0
0
0 = WRITE
0
ADP1649 RECEIVES
DATA
S
T
S
P
MASTER
STOP
CHIP ADDRESS
0
1
1
0
0 0
0
0
0
1
0
MASTER
STOP
CHIP ADDRESS
S
T
S
T
0 1
1
0
0
0
0
0
1
0
0 = WRITE
1 = READ
S
P
ADP1649 SENDS
DATA
SUBADDRESS



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