CAT5401WI-25 Datasheet, PDF (10/15 Pages) ON Semiconductor – Quad Digitally Programmable Potentiometers with 64 Taps and SPI Interface

CAT5401
Figure 6. Increment/Decrement Timing Limits
INC/DEC
Command
Issued
SCK
SI
R_W
Voltage Out
t_WRID
INSTRUCTION FORMAT
Read Wiper Control Register (WCR)
DEVICE ADDRESSES
INSTRUCTION
DATA
¯C¯S¯
0
1
0
1
0
0
A1
A0
1
0
0
1
0
0
P1
P0
7
0
6
0
5
4
3
2
1
0
¯C¯S¯
Write Wiper Control Register (WCR)
DEVICE ADDRESSES
INSTRUCTION
DATA
¯C¯S¯
0
1
0
1
0
0
A1
A0
1
0
1
0
0
0
P1
P0
7
0
6
0
5
4
3
2
1
0
¯C¯S¯
Read Data Register (DR)
DEVICE ADDRESSES
INSTRUCTION
DATA
¯C¯S¯ ^{0 1 0 1 0 0 A1 A0 1 0 1 1 R1 R0 P1 P0 7 6 5 4 3 2 1 0} ¯C¯S¯
Write Data Register (DR)
DEVICE ADDRESSES
INSTRUCTION
DATA
High
¯C¯S¯
0
1
0
1
0
0
A1
A0
1
1
0
0
R1
R0
P1
P0
7
6
5
4
3
2
1
0
¯C¯S¯
Voltage
Write
Cycle
Read (WIP) Status
DEVICE ADDRESSES
INSTRUCTION
¯C¯S¯ ^{0 1 0 1 0 0 A1 A0 0 1 0 1 0 0 0}
DATA
1
7
0
6
0
5
0
4
0
3
0
2
0
1
0
W
I
¯C¯S¯
P
Doc. No. MD-2012 Rev. I
10
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Characteristics subject to change without notice