X9221 datasheet(1/14 Pages) XICOR

Nome de Peças	X9221

Descrição Electrónicos	Dual E2POT??Nonvolatile Digital Potentiometer

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X9221

1

Dual E2POT™ Nonvolatile Digital Potentiometer

Characteristics subject to change without notice

3079-1.6 6/12/96 T1/C1/D0 NS

FEATURES

• Two E2POTs in One Package

• Two-Wire Serial Interface

• Register Oriented Format

—Directly Write Wiper Position

—Read Wiper Position

—Store as Many as Four Positions per Pot

• Instruction Format

—Quick Transfer of Register Contents to

Resistor Array

• Low Power CMOS

• Direct Write Cell

—Endurance - 100,000 Writes per Register

—Register Data Retention - 100 years

• 8 Bytes of E2PROM memory

• 3 Resistor Array Values

—2K

Ω to 50KΩ Mask Programmable

• Resolution: 64 Taps each Pot

• 20-Lead Plastic DIP and 20-Lead SOIC Packages

Advance Information

X9221

DESCRIPTION

The X9221 integrates two nonvolatile E2POT™ digitally

controlled potentiometers on a monolithic CMOS micro-

circuit.

The X9221 contains two resistor arrays, each com-

posed of 63 resistive elements. Between each element

and at either end are tap points accessible to the wiper

elements. The position of the wiper element on the array

is controlled by the user through the two-wire serial bus

interface.

Each resistor array has associated with it a wiper counter

register and four 8-bit data registers that can be directly

written and read by the user. The contents of the wiper

counter register control the position of the wiper on the

resistor array.

The data register may be read or written by the user. The

contents of the data registers can be transferred to the

wiper counter register to position the wiper. The current

wiper position can be transferred to any one of its

associated data registers.

FUNCTIONAL DIAGRAM

Terminal Voltage

±5V, 64 Taps

R0 R1

R2 R3

WIPER

COUNTER

REGISTER

(WCR)

RESISTOR

ARRAY

POT 1

VH1

VL1

VW1

R0 R1

R2 R3

WIPER

COUNTER

REGISTER

(WCR)

INTERFACE

AND

CONTROL

CIRCUITRY

SCL

SDA

A0

A1

A2

A3

VH0

VL0

VW0

DATA

3079 ILL F07.1

8

APPLICATION NOTES

A V AILABLE

AN20 • AN42 • AN44–48 • AN50 • AN52 • AN53 • AN73

Nº de peça semelhante - X9221

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Intersil Corporation	X9221A	259Kb / 15P	64 Taps, 2-Wire Serial Bus
Intersil Corporation	X9221A	1Mb / 8P	DIGITAL POTENTIOMETERS
Renesas Technology Corp	X9221A	638Kb / 15P	64 Taps, 2-Wire Serial Bus Dual Digitally Controlled Potentiometer (XDCP??
Intersil Corporation	X9221A	292Kb / 15P	Dual Digitally Controlled Potentiometer August 30, 2006
Intersil Corporation	X9221AUP	259Kb / 15P	64 Taps, 2-Wire Serial Bus

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