AD5170 Analog Devices, AD5170 Datasheet - Page 19

• Manufacturer Part Number: AD5170
• Description: 256-Position Two-Time Programmable I2C Digital Potentiometer
• Manufacturer: Analog Devices

START BY
MASTER
START BY
MASTER
SDA
SCL
SCL
SDA
SCL
SDA
P
1
0
1
0
t
1
SLAVE ADDRESS BYTE
SLAVE ADDRESS BYTE
1
1
S
FRAME 1
FRAME 1
0
0
t
2
1
1
1
1
t
3
AD1 AD0
AD1 AD0
t
8
t
8
R/W
R/W
Figure 44. I
Figure 46. Reading Data from the RDAC Register
t
ACK BY
AD5170
ACK BY
AD5170
9
9
9
Figure 45. Writing to the RDAC Register
A0
D7
t
1
1
6
2
C Interface Detailed Timing Diagram
SD
D6
t
Rev. 0 | Page 19 of 24
t
4
9
INSTRUCTION BYTE
INSTRUCTION BYTE
D5
T
FRAME 2
D4
FRAME 2
0
D3
OW X
t
7
D2
D1
X
D0
X
S
ACK BY
AD5170
ACK BY
MASTER
9
9
t
5
D7
E1
1
1
D6
E0
t
2
D5
X
DATA BYTE
DATA BYTE
FRAME 3
FRAME 3
D4
X
D3
X
D2
X
D1
X
D0
X
ACK BY
AD5170
NO ACK
BY MASTER
P
9
9
STOP BY
STOP BY
MASTER
MASTER
t
10
AD5170