wms7171 Winbond Electronics Corp America, wms7171 Datasheet - Page 6

• Manufacturer Part Number: wms7171
• Description: Non-volatile Digital Potentiometers With Up/down 3-wire Interface, 10kohm, 50kohm, 100kohm Resistance 100 Taps Without / With Output Buffer
• Manufacturer: Winbond Electronics Corp America

6. PIN DESCRIPTION
Notes: The terminology of high and low terminals above references to the relative
Pin Name
R
R
R
U/ D
INC
V
V
CS
W
position of the terminal with respect to the wiper moving direction and not the
voltage potential of the terminal.
A
B
/V
/V
/V
SS
DD
A
B
W
Chip Select: When CS is LOW, the device is enabled.
When CS is HIGH, the part is deselected and is in
standby mode
Up/Down Control: HIGH state enables the wiper to
move towards the R
implies the wiper moves towards the R
Increment Control: When CS is LOW, a HIGH-LOW
transition on INC will move the wiper one increment
either up or down based on the U/ D input
High terminal of the device
Low terminal of the device
Wiper Terminal: Output of the resistor array is determined
by the INC , U/ D and CS inputs
Ground pin, logic ground reference
Power Supply
TABLE 1 – PIN DESCRIPTION
A
- 6 -
Description
/ V
A
terminal, while LOW state
B
/ V
B
terminal
WMS7170 / 7171