APPLICATION NOTES
A V A I L A B L E
AN42 • AN44–48 • AN50 • AN52 • AN53 • AN71 • AN73
TXe9r3m13inal Voltage ±5V, 32 Taps
X9313
E2POT™ Nonvolatile Digital Potentiometer
FEATURES
DESCRIPTION
• Low Power CMOS
The Xicor X9313 is a solid state nonvolatile potentiom-
eter and is ideal for digitally controlled resistance
trimming.
—V = 3V to 5.5V
CC
—Active Current, 3mA Max
—Standby Current, 500µA Max
• 31 Resistive Elements
The X9313 is a resistor array composed of 31 resistive
elements. Between each element and at either end are
tappointsaccessibletothewiperelement. Thepositionof
the wiper element is controlled by the CS, U/D, and INC
inputs. The position of the wiper can be stored in nonvola-
tile memory and then be recalled upon a subsequent
power-up operation.
—Temperature Compensated
—±20% End to End Resistance Range
— –5V to +5V Range
• 32 Wiper Tap Points
—Wiper Positioned via Three-Wire Interface
—Similar to TTL Up/Down Counter
—Wiper Position Stored in Nonvolatile
Memory and Recalled on Power-Up
• 100 Year Wiper Position Data Retention
• X9313Z = 1KΩ
The resolution of the X9313 is equal to the maximum
resistance value divided by 31. As an example, for the
X9313W (10KΩ) each tap point represents 323Ω.
All Xicor nonvolatile memories are designed and tested
for applications requiring extended endurance and data
retention.
• X9313W = 10KΩ
• Packages
—8-Lead MSOP
—8-Lead PDIP
—8-Lead SOIC
FUNCTIONAL DIAGRAM
U/D
INC
CS
5-BIT
UP/DOWN
COUNTER
31
V
H
30
29
28
5-BIT
NONVOLATILE
MEMORY
ONE
OF
THIRTY-
TWO
TRANSFER
GATES
RESISTOR
ARRAY
DECODER
2
1
0
STORE AND
RECALL
CONTROL
CIRCUITRY
V
CC
GND
V
V
L
W
3866 FHD F01
E2POT™ is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
3866-1.5 6/12/96 T5/C1/D8 NS
Characteristics subject to change without notice
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