參數(shù)資料
型號(hào): AD5172BRM2.5
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字電位計(jì)
英文描述: Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
中文描述: DUAL 2.5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10
封裝: 3 X 4.90 MM, MO-187BA, MSOP-10
文件頁(yè)數(shù): 19/24頁(yè)
文件大?。?/td> 948K
代理商: AD5172BRM2.5
AD5172/AD5173
Rev. A | Page 19 of 24
0
t
1
t
2
t
3
t
8
t
8
t
9
t
9
t
6
t
4
t
7
t
5
t
2
t
10
P
S
S
SCL
SDA
P
Figure 49. I
2
C Interface Detailed Timing Diagram
0
SCL
START BY
MASTER
SDA
0
1
1
FRAME 1
SLAVE ADDRESS BYTE
0
1
1
1
1
FRAME 2
INSTRUCTION BYTE
ACK BY
AD5172
R/W
A0
SD
0
OW
X
X
X
1
9
D7
D6
D5
D4
D3
ACK BY
AD5172
FRAME 3
DATA BYTE
1
9
T
STOP BY
MASTER
9
D2
D1
D0
ACK BY
AD5172
Figure 50. Writing to the RDAC Register—AD5172
0
SCL
START BY
MASTER
SDA
0
1
1
FRAME 1
SLAVE ADDRESS BYTE
0
1
1
AD1 AD0
FRAME 2
INSTRUCTION BYTE
ACK BY
AD5173
R/W
A0
SD
0
OW
X
X
X
1
9
D7
D6
D5
D4
D3
ACK BY
AD5173
FRAME 3
DATA BYTE
1
9
T
STOP BY
MASTER
9
D2
D1
D0
ACK BY
AD5173
Figure 51. Writing to the RDAC Register—AD5173
0
SCL
START BY
MASTER
SDA
0
1
1
FRAME 1
SLAVE ADDRESS BYTE
0
1
1
1
1
FRAME 2
INSTRUCTION BYTE
ACK BY
AD5172
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
X
X
X
NO ACK
BY MASTER
Figure 52. Reading Data from a Previously Selected RDAC Register in Write Mode—AD5172
0
SCL
START BY
MASTER
SDA
0
1
1
FRAME 1
SLAVE ADDRESS BYTE
0
1
1
AD1 AD0
FRAME 2
INSTRUCTION BYTE
ACK BY
AD5173
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
X
X
X
NO ACK
BY MASTER
Figure 53. Reading Data from a Previously Selected RDAC Register in Write Mode—AD5173
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