©Xicor, Inc. 1994, 1995, 1996 Patents Pending

7000-1.5 7/16/97 T6/C0/D6 SH

1

Characteristics subject to change without notice

X9316

FEATURES

• Low Micropower CMOS

—Active Current, 50

µA (Increment) Max

—Standby Current, 400

µA (Store) Max

• Low Noise

• 31 Resistive Elements

—Temperature Compensated

—

± 20% End to End Resistance Range

—–5V to +5V

• 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

• X9316Z = 1K

Ω

• X9316W = 10K

Ω

• Packages

—14-Lead PDIP

—14-Lead SOIC

DESCRIPTION

The Xicor X9316 is a solid state “micropower” nonvolatile

potentiometer and is ideal for digitally controlled resis-

tance trimming in battery-powered systems.

The X9316 is a resistor array composed of 31 resistive

elements. Between each element and at either end are

tap points accessible to the wiper element. 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 subse-

quent power-up operation.

The resolution of the X9316 is equal to the maximum

resistance value divided by 31. As an example, for the

X9316W (10K

Ω) each tap point represents 323Ω.

All Xicor nonvolatile memories are designed and tested

for applications requiring extended endurance and data

retention.

Low Noise, Low Power, 32 Taps

FUNCTIONAL DIAGRAM

7000 FRM F01

5-BIT

UP/DOWN

COUNTER

5-BIT

NONVOLATILE

MEMORY

STORE AND

RECALL

CONTROL

CIRCUITRY

ONE

OF

THIRTY-

TWO

WIPER

POSITION

DECODER

RESISTOR

ARRAY

U/D

INC

CS

CMOS SWITCH

V+

V–

E2POT™ is a trademark of Xicor, Inc.