Rainbow Electronics MAX5484 User Manual
Page 15
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MAX5481–MAX5484
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
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15
Figure 4. Serial SPI-Compatible Interface Format
ACTION
WIPER
REGISTER
UPDATED
0
0
0
0
0
0
0
0
D9 D8 D7 D6
D5 D4 D3 D2
D1 D0
1
2
3
4
5
6
7
8
9
10
11 12 13
14
15
16
17
18
19 20 21 22
23
24
X
X
X
X
X
X
CS
C1 C0
SCLK(
INC)
DIN(U/
D)
1
2
3
4
5
6
7
8
9
10
D9
D8
D7
D6
D5
D4
D3
D2
a) 24-BIT COMMAND/DATA WORD
1
2
3
4
5
6
7
8
C1 C0
b) 8-BIT COMMAND WORD
D1
D0
CS
11
12
13
14
15
16
17
18
19
20
21
22
23
24
CS
C1 C0
SCLK(
INC)
DIN(U/
D)
DIN(U/
D)
SCLK(
INC)
Figure 5. Write Wiper Register Operation
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