CAT5221 Datasheet, PDF (11/16 Pages) Catalyst Semiconductor – Dual Digitally Programmable Potentiometers (DPP) with 64 Taps and 2-wire Interface

Figure 10. Increment/Decrement Timing Limits
INC/DEC
Command
Issued
SCL
SDA
R_W
Voltage Out
CAT5221
t_WRID
INSTRUCTION FORMAT
Read Wiper Control Register (WCR)
S _{DEVICE ADDRESSES} A
INSTRUCTION ^A
DATA
AS
T
A
0 1 0 1 A3 A2 A1 A0
C
K
1 0 0 1 0 P0 0 0
C
K
76
5
43
2 10
C
K
T
O
R
P
T
Write Wiper Control Register (WCR)
S _{DEVICE ADDRESSES} A
T
A
0
1 0 1 A3 A2 A1 A0
C
K
R
T
INSTRUCTION ^A
1 0 1 0 0 P0 0 0
C
K
DATA
AS
76
5
43
2 10
C
K
T
O
P
Read Data Register (DR)
S _{DEVICE ADDRESSES} A
INSTRUCTION
A
DATA
AS
T
A
0
1 0 1 A3 A2 A1 A0
C
K
1011
0
P0 R1 R0
C
K
76
5
43
2 10
C
K
T
O
R
P
T
Write Data Register (DR)
S _{DEVICE ADDRESSES} A
INSTRUCTION
A
DATA
AS
T
A
0
1 0 1 A3 A2 A1 A0
C
K
1100
0
P0 R1 R0
C
K
76
5
43
2 10
C
K
T
O
R
P
T
11
Document No. 2113, Rev. I