X9313
2
PIN DESCRIPTIONS
V
H
and V
L
The high (V
H
) and low (V
L
) terminals of the X9313 are
equivalent to the fixed terminals of a mechanical potenti-
ometer. The minimum voltage is –5V and the maximum is
+5V. 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
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 X9313
will be placed in the low power standby mode until the
device is selected once again.
PIN CONFIGURATION
PIN NAMES
Symbol
Description
V
H
V
W
V
L
V
SS
V
CC
U/
D
INC
CS
High Terminal
Wiper Terminal
Low Terminal
Ground
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
3866 PGM T01
U/D
INC
VCC
CS
3866 ILL F02.2
VH
VSS
VW
VL
1
2
3
4
8
7
6
5
X9313
8-LEAD MSOP
VCC
CS
VL
VW
INC
U/D
VH
VSS
1
2
3
4
8
7
6
5
X9313
8-LEAD DIP/SOIC