鈩?/div>
鈥?Packages
鈥?-lead SOIC, MSOP and DIP
DESCRIPTION
The Xicor X9313 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, a control section, and nonvolatile memory.
The wiper position is controlled by a 3-wire interface.
The potentiometer is implemented by a resistor array
composed of 31 resistive elements and a wiper
switching network. Between each element and at
either end are tap points accessible to the wiper
terminal. The position of the wiper element is
controlled by the CS, U/D, and INC inputs. The
position of the wiper can be stored in nonvolatile
memory and then be recalled upon a subsequent
power-up operation.
The device can be used as a three-terminal
potentiometer or as a two-terminal variable resistor in
a wide variety of applications including:
鈥?control
鈥?parameter adjustments
鈥?signal processing
BLOCK DIAGRAMS
V
CC
(Supply Voltage)
U/D
INC
CS
5-Bit
Up/Down
Counter
31
30
29
R
H
/V
H
Up/Down
(U/D)
Increment
(INC)
Device Select
(CS)
Control
and
Memory
R
H
/V
H
R
W
/V
W
R
L
/V
L
Store and
Recall
Control
Circuitry
5-Bit
Nonvolatile
Memory
28
One
of
Thirty
Two
Decoder
2
Transfer
Gates
Resistor
Array
V
SS
(Ground)
General
V
CC
V
SS
1
0
R
L
/V
L
R
W
/V
W
Detailed
REV 1.1 10/23/00
www.xicor.com
Characteristics subject to change without notice.
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