CAT5409 Datasheet, PDF (11/17 Pages) Catalyst Semiconductor – Quad Digitally Programmable Potentiometers (DPPTM) with 64 Taps and 2-wire Interface

Figure 10. Increment/Decrement Timing Limits
INC/DEC
Command
Issued
SCL
SDA
R_W
Voltage Out
CAT5409
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
10
0
10
0 P1 P0
C
K
76
5
43
2 10
C
K
T
O
R
00
P
T
Write Wiper Control Register (WCR)
S _{DEVICE ADDRESSES} A
INSTRUCTION
A
DATA
AS
T
A
0 1 0 1 A3 A2 A1 A0
C
K
10
1
00
0 P1 P0
C
K
76
5
43
2 10
C
K
T
O
R
00
P
T
Read Data Register (DR)
S _{DEVICE ADDRESS} A
T
A
0
1 0 1 A3 A2A1 A0
C
K
R
T
INSTRUCTION
A
DATA
AS
1 01
1
R1
R0
P1 P0
C
K
7
6
5
4
3
2
1
0
C
K
T
O
00
P
Write Data Register (DR)
S _{DEVICE ADDRESS} A
INSTRUCTION
A
DATA
AS
T
A
0
1 0 1 A3 A2A1 A0
C
K
1 1 0 0 R1 R0 P1 P0
C
K
7
6
5
4
3
210
C
K
T
O
R
00
P
T
11
Document No. 2010, Rev. I