X9315 Datasheet, PDF (2/13 Pages) Xicor Inc. – E 2 POT TM Nonvolatile Digital Potentiometer

X9315
PIN DESCRIPTIONS
V_H and V_L
The high (V_H) and low (V_L) terminals of the X9315 are
equivalent to the fixed terminals of a mechanical potenti-
ometer. The minimum voltage is V_SS and the maximum is
V_CC. It should be noted that the terminology of V_L and V_H
references the relative position of the terminal in relation
to wiper movement direction selected by the U/D input
and not the voltage potential on the terminal.
V_W
V_w is the wiper terminal, equivalent to the movable
terminal of a mechanical potentiometer. The position
of the wiper within the array is determined by the control
inputs. The wiper terminal series resistance is typically
400Ω.
Up/Down (U/D)
The U/D input controls the direction of the wiper move-
ment and whether the counter is incremented or decre-
mented.
Increment (INC)
The INC input is negative-edge triggered. Toggling INC
will move the wiper and either increment or decrement
the counter in the direction indicated by the logic level on
the U/D input.
Chip Select (CS)
The device is selected when the CS input is LOW. The
current counter value is stored in nonvolatile memory
when CS is returned HIGH while the INC input is also
HIGH. After the store operation is complete the X9315
will be placed in the low power standby mode until the
device is selected once again.
PIN CONFIGURATION
DIP/SOIC/MSOP
INC 1
8
V_CC
U/D 2
7 CS
X9315
V_H
3
6
V_L
V_SS
4
5
V_W
PIN NAMES
Symbol
V_H
V_W
V_L
V_SS
V_CC
U/D
INC
CS
6732 FM2
Description
High Terminal
Wiper Terminal
Low Terminal
Ground
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
6732 FM T01
2