X9313

1

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

Characteristics subject to change without notice

3866-1.5 6/12/96 T5/C1/D8 NS

DESCRIPTION

The Xicor X9313 is a solid state nonvolatile potentiom-

eter and is ideal for digitally controlled resistance

trimming.

The X9313 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 nonvola-

tile memory and then be recalled upon a subsequent

power-up operation.

The resolution of the X9313 is equal to the maximum

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

X9313W (10K

Ω) each tap point represents 323Ω.

All Xicor nonvolatile memories are designed and tested

for applications requiring extended endurance and data

retention.

FEATURES

—Active Current, 3mA Max

—Standby Current, 500

—Temperature Compensated

—

— –5V to +5V Range

—Wiper Positioned via Three-Wire Interface

—Similar to TTL Up/Down Counter

—Wiper Position Stored in Nonvolatile

Memory and Recalled on Power-Up

Ω

Ω

—8-Lead MSOP

—8-Lead PDIP

—8-Lead SOIC

FUNCTIONAL DIAGRAM

3866 FHD F01

X9313

5-BIT

UP/DOWN

COUNTER

5-BIT

NONVOLATILE

MEMORY

STORE AND

RECALL

CONTROL

CIRCUITRY

ONE

OF

THIRTY-

TWO

DECODER

RESISTOR

ARRAY

31

30

29

28

2

1

0

VL

VW

VH

U/D

INC

CS

VCC

GND

TRANSFER

GATES

Terminal Voltage

A V AILABLE

AN42 • AN44–48 • AN50 • AN52 • AN53 • AN71 • AN73