Rainbow Electronics MAX5439 - Manual (Page 8)

MAX5436–MAX5439
±15V, 128-Tap, Low-Drift Digital Potentiometers
8 _______________________________________________________________________________________
DATA WORD
D7 D6 D5 D4 D3 D2 D1 D0
Don’t Care (MSB) (LSB)
First Bit
Loaded
Last Bit Loaded
Figure 1. Serial Data Format
WIPER POSITION UPDATED
MSB LOADED
SCLK
DIN
MSB LSB
D0 D1 D2 D3 D4 D5 D6 D7
LAST BIT LOADED
TIME
CS
Figure 2. Serial Interface Timing Diagram
SCLK
DIN
t CSO
t CSS
t CH
t CL
t DS
t DH
t CP t CSH
t CS1
t CSW
CS
Figure 3. Detailed Serial Interface Timing Diagram