X9312TPI XICOR [Xicor Inc.], X9312TPI Datasheet - Page 2

• Manufacturer Part Number: X9312TPI
• Manufacturer: XICOR [Xicor Inc.]

X9312
PIN DESCRIPTIONS
V
The high (V
are equivalent to the fixed terminals of a mechanical
potentiometer. The minimum voltage is 0V and the
maximum is +15V. It should be noted that the
terminology of V
of the terminal in relation to wiper movement direction
selected by the U/D input and not the voltage potential on
the terminal.
V
Vw 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 40 .
Up/Down (U/D)
The U/D input controls the direction of the wiper move-
ment and whether the counter is incremented or
decremented.
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 X9312
will be placed in the low power standby mode until the
device is selected once again.
H
W
and V
L
H
) and low (V
L
and V
H
references the relative position
L
) terminals of the X9312
2
PIN CONFIGURATION
PIN NAMES
Symbol
V
V
V
V
V
U/D
INC
CS
H
W
L
SS
CC
V SS
INC
U/D
V H
1
2
3
4
DIP/SOIC
X9312
High Terminal
Wiper Terminal
Low Terminal
Ground
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
Description
8
7
6
5
V CC
CS
V L
V W
3863 FHD F02.1
3865 PGM T01