X9313
PIN DESCRIPTIONS
PIN CONFIGURATION
V and V
H
L
8-LEAD DIP/SOIC
The high (V ) and low (V ) terminals of the X9313 are
H
L
INC
U/D
1
2
3
4
8
7
6
5
V
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 and V
CC
CS
X9313
V
H
L
H
V
L
V
references the relative position of the terminal in relation
towipermovementdirectionselectedbytheU/Dinputand
not the voltage potential on the terminal.
V
SS
W
8-LEAD MSOP
V
W
1
8
7
6
5
V
H
U/D
INC
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 40Ω.
2
3
4
V
SS
X9313
V
W
CC
V
CS
L
3866 ILL F02.2
Up/Down (U/D)
The U/D input controls the direction of the wiper move-
ment and whether the counter is incremented or
decremented.
PIN NAMES
Symbol
Description
V
High Terminal
Wiper Terminal
Low Terminal
Ground
Increment (INC)
H
V
V
V
V
W
The INC input is negative-edge triggered. Toggling INC
will move the wiper and either increment or decrement
thecounterinthedirectionindicatedbythelogiclevelon
the U/D input.
L
SS
CC
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
U/D
INC
CS
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.
3866 PGM T01
2
XICOR [ XICOR INC. ]
