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AD5170 Datasheet(PDF) 19 Page - Analog Devices

Part # AD5170
Description  256-Position Two-Time Programmable I2C Digital Potentiometer
PDF  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5170 Datasheet(HTML) 19 Page - Analog Devices

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AD5170
Rev. A | Page 19 of 24
t1
t2
t3
t8
t8
t9
t9
t6
t4
t7
t5
t2
t10
PS
S
SCL
SDA
P
Figure 44. I2C Interface Detailed Timing Diagram
SCL
START BY
MASTER
SDA
01
1
FRAME 1
SLAVE ADDRESS BYTE
0
1
1
AD1 AD0
FRAME 2
INSTRUCTION BYTE
ACK BY
AD5170
R/W
A0
SD
0
OW
X
X
X
1
9
D7
D6
D5
D4
D3
ACK BY
AD5170
FRAME 3
DATA BYTE
1
9
T
STOP BY
MASTER
9
D2
D1
D0
ACK BY
AD5170
Figure 45. Writing to the RDAC Register
SCL
START BY
MASTER
SDA
01
1
FRAME 1
SLAVE ADDRESS BYTE
0
1
1
AD1 AD0
FRAME 2
INSTRUCTION BYTE
ACK BY
AD5170
R/W
D7
D6
D4
D3
D2
D1
D0
1
9
E1
E0
X
X
X
ACK BY
MASTER
FRAME 3
DATA BYTE
1
9
D5
STOP BY
MASTER
9
XX
X
NO ACK
BY MASTER
Figure 46. Reading Data from the RDAC Register



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