Datasheet X9511WPM, X9511WPI, X9511WP, X9511ZSM, X9511ZSI Datasheet (XICOR)



A

PPLICATION

N

OTES

AVAILABLE

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

Terminal Voltage ± 5V, 32 Taps

X9511

PushPot



Potentiometer (Push Button Controlled)

FEATURES

• Push Button Controlled

• Low Power CMOS
—Active Current, 3mA Max
—Standby Current, 200 µ A Max

• 31 Resistive Elements
—Temperature Compensated
— ± 20% End to End Resistance Range
—–5V to +5V Range

• 32 Wiper T ap Points
—Wiper Positioned via Two Push Button Inputs
—Slow & Fast Scan Modes
—AUTOSTORE



Option
—Manual Store Option
—Wiper Position Stored in Nonvolatile Memory

and Recalled on Power-Up

• 100 Year Wiper Position Data Retention

• X9511Z = 1K Ω

• X9511W = 10K Ω

• Packages
—8-Lead PDIP
—8-Lead SOIC

DESCRIPTION

The Xicor X9511 is a push button controlled, potentiom­eter and is ideal for push button controlled resistance
trimming.

The X9511 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 PU

and PD
inputs. The position of the wiper can be automatically
stored in E

2

memory and then be recalled upon a subse-

quent power-on operation.
The resolution of the X9511 is equal to the maximum

resistance value divided by 31. As an example, for the
X9511W (10K Ω ) each tap point represents 323 Ω .

All Xicor nonvolatile products are designed and tested f or
applications requiring extended endurance and data
retention.

FUNCTIONAL DIAGRAM

PU
PD

STORE AND

ASE

CIRCUITRY

AUTOSTORE is a registered trademark of Xicor, Inc.

2

E

POT  and PushPot  are trademarks of Xicor, Inc.

5-BIT
UP/DOWN
COUNTER

5-BIT

EEPROM

MEMORY

RECALL

CONTROL

ONE

OF

THIRTY -

TWO

DECODER

31

30

29

28

V

H

TRANSFER

GATES

2

1

0

RESISTOR

ARRAY

V
V

3067 ILL F01.1

L
W

Xicor, Inc. 1994, 1995, 1996 Patents Pending

3067-3.5 8/9/97 T2/C0/D0 NS

1

Characteristics subject to change without notice

X9511

V

CC

ASE
V

L

V

W

3067 ILL F02.1

PU
PD
V

H

V

SS

1
2
3
4

8
7
6
5

X9511

DIP/SOIC

PIN DESCRIPTIONS
V

and V

H

The high (V

L

) and low (V

H

) terminals of the X9511 are

L

equivalent to the fixed terminals of a mechanical potenti­ometer. The minimum voltage is –5V and the maximum
is +5V. It should be noted that the terminology of V
V

references the relative position of the terminal in rela-

H

tion to wiper movement direction selected by the PU

and

L

and

PD inputs and not the voltage potential on the terminal.

PU

The debounced PU

input is for incrementing the wiper
position. An on-chip pull-up holds the PU input HIGH. A
switch closure to ground or a LOW logic level will, after a
debounce time, move the wiper to the next adjacent
higher tap position.

PD

The debounced PD

input is for decrementing the wiper
position. An on-chip pull-up holds the PD input HIGH. A
switch closure to ground or a LOW logic level will, after a
debounce time, move the wiper to the next adjacent
lower tap position.

ASE

The debounced ASE

(AUTOSTORE enable) pin can be

in one of two states:

– Autostore is enabled. When V

V

IL

powers-down an

CC

automatic store cycle takes place.
V

– AUTOSTORE is disabled. A LOW to HIGH will ini-

IH

tiate a manual store operation. This is for a user who
wishes to connect a push button switch to this pin. For
every valid push, the X9511 will store the current wiper
position to the E

2

PROM.

PIN CONFIGURATION

PIN NAMES

Symbol Description

V
V
V
V
V
PU

H
W
L
SS
CC

High Terminal
Wiper Terminal
Low Terminal
Ground
Supply Voltage

Push Up Input
PD Push Down Input
ASE AUTOSTORE Enable Input

3067 FRM T01.1

2

X9511

DEVICE OPERATION

There are three sections of the X9511: the input control,
counter and decode section; the E

2

PROM memory; and
the resistor array. The input control section operates just
like an up/down counter. The output of this counter is
decoded to turn on a single electronic switch connecting
a point on the resistor array to the wiper output. Under
the proper conditions the contents of the counter can be
stored in E

2

PROM memory and retained for future use.
The resistor array is comprised of 31 individual resistors
connected in series. At either end of the array and
between each resistor is an electronic switch that trans­fers the potential at that point to the wiper .

The X9511 is designed to interface directly to two push
button switches for effectively moving the wiper up or
down. The PU

and PD inputs increment or decrement a
5-bit counter respectively. The output of this counter is
decoded to select one of the thirty-two wiper positions
along the resistive array. The wiper increment input, PU
and the wiper decrement input, PD are both connected
to an internal pull-up so that they normally remain HIGH.
When pulled LOW by an e xternal push button s witch or a
logic LOW level input, the wiper will be switched to the
next adjacent tap position.

Internal debounce circuitry prevents inadvertent switch­ing of the wiper position if PU or PD remain LOW f or less
than 40ms, typical. Each of the buttons can be pushed
either once for a single increment/decrement or continu­ously for a multiple increments/decrements. The number
of increments/decrements of the wiper position depend

on how long the button is being pushed. When making a
continuous push, after the first second, the increment/
decrement speed increases. For the first second the
device will be in the slow scan mode. Then if the b utton is
held for longer than 1 second the device will go into the
fast scan mode. As soon as the button is released the
X9511 will return to a standby condition.

The wiper, when at either fixed terminal, acts like its
mechanical equivalent and does not move beyond the
last position. That is, the counter does not wrap around
when clocked to either e xtreme.

AUTOSTORE

The value of the counter is stored in E
whenever the chip senses a power-down of V

is enabled (held LOW). When pow er is restored, the

ASE

2

PROM memory

while

CC

content of the memory is recalled and the counter reset
to the last value stored.

If AUTOSTORE is to be implemented, ASE is typically
hard wired to V

. If ASE

SS

is held HIGH during power-up
and then taken LOW, the wiper will not respond to the PU
or PD inputs until ASE is brought HIGH and held HIGH.

Manual (Push Button) Store

When ASE is not enabled (held HIGH) a push button
switch may be used to pull ASE LOW and released to
perform a manual store of the wiper position.

R

TOTAL

with V

Removed

CC

The end to end resistance of the array will fluctuate once
V

is removed.

CC

Typical circuit with ASE
push button switch

V

CC

store pin controlled by

8

V

CC

1

PU

2

PD

7

ASE

VH

VW

VL

V

SS

3067 ILL F05a

3
5
6

Typical circuit with ASE
AUTOSTORE mode

V

CC

3

store pin used in

3.3µF

8

V

CC

1

PU

2

PD

7

ASE

V

VH

VW

VL

4

SS

3
5
6

3067 ILL F05.2

X9511

∆

ABSOLUTE MAXIMUM RATINGS*

Temperature under Bias......................–65 ° C to +135 ° C

Storage Temperature...........................–65 ° C to +150 ° C

V oltage on PU

with Respect to V

V oltage on V

Referenced to V

V = |V

–V

H

, PD , and V

and V

H

|

L

CC

................................–1V to +7V

SS

L

..................................–8V to +8V

SS

X9511Z..................................................................4V

X9511W ............................................................ 10V

Lead Temperature (Soldering 10 seconds)...........300 ° C

Wiper Current ................................................................± 1mA

ANALOG CHARACTERISTICS
Electrical Characteristics

End-to-End Resistance Tolerance ...........................± 20%

Pow er Rating at 25 ° C

X9511Z........................................................... 16mW

X9511W ......................................................... 10mW

Wiper Current .....................................................± 1mA Max.

Typical Wiper Resistance ........................... 40 Ω at 1mA

Typical Noise............................... < –120dB/ √ Hz Ref: 1V

Resolution

Resistance .................................................................3%

Linearity

Absolute Linearity
Relative Linearity

(1)

...............................................± 1.0 Ml

(3)

.................................................± 0.2 Ml

(2)
(2)

*COMMENT

Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation of
the device at these or any other conditions above those
listed in the operational sections of this specification is
not implied. Exposure to absolute maxim um rating condi­tions for extended periods ma y affect de vice reliability.

Temperature Coefficient

–40 ° C to +85 ° C

X9511Z...........................................+600 ppm/ ° C Typical

X9511W .........................................+300 ppm/ ° C Typical

Ratiometric Temperature Coefficient ................. ± 20 ppm

Wiper Adjustability

Unlimited Wiper Adjustment (Non-Store operation)

Wiper Position Store Operations....................100,000

Data Changes

Physical Characteristics

Marking Includes

Manufacturer’ s Trademark
Resistance Value or Code
Date Code

Notes: (1) Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage

= (V

(actual) – V

w(n)

(2) 1 Ml = Minimum Increment = R
(3) Relative Linearity is a measure of the error in step size between taps = V

(expected)) = ± 1 Ml Maximum.

w(n)

TOT

/31.

W(n+1)

– [V

w(n)

SYMBOL TABLE

WAVEFORM

4

+ Ml] = +0.2 Ml.

INPUTS

Must be
steady

May change
from LOW to
HIGH

May change
from HIGH to
LOW

Don’t Care:
Changes
Allowed

N/A

OUTPUTS

Will be
steady

Will change
from LOW to
HIGH

Will change
from HIGH to
LOW

Changing:
State Not
Known

Center Line
is High
Impedance

X9511

RECOMMENDED OPERATING CONDITIONS

Temperature Min. Max.

Commercial 0 ° C +70 ° C

Supply Voltage Limits

X9511 5V ± 10%
Industrial –40 ° C +85 ° C
Military –55 ° C +125 ° C

3067 FRM T03

D.C. OPERA TING CHARA CTERISTICS (Over recommended operating conditions unless otherwise specified.)

Limits

Symbol Parameter

I

I
I

V

V
R

V
V

C

CC

SB

LI

IH

lL

VH
VL

W

IN

(5)

VCC Active Current 1 3 mA PU or PD held at VIL the other at V

Standby Supply Current 100 200 µA
PU, PD, ASE Input

Leakage Current
PU, PD, ASE Input

HIGH Voltage
PU, PD, ASE Input

LOW Voltage
Wiper Resistance 40 100 Ω Max. Wiper Current ±1mA
VH Terminal Voltage –5 +5 V
VL Terminal Voltage –5 +5 V

ASE, PU, PD Input
Capacitance

2

–1 0.8 V

(4)

Max.

10 µA

V

+ 1

CC

10 pF

Units Test ConditionsMin. Typ.

PU = PD = V
V

= VSS to V

IN

IH

CC

V

V

= 5V, VIN = 0V,

CC

T

= 25°C, f = 1MHz

A

3067 FRM T04.1

IH

3067 FRM T05.4

STANDARD PARTS

Part Number Maximum Resistance Wiper Increments Minimum Resistance

X9511Z 1KW 32.3Ω 40Ω

X9511W 10KW 323Ω 40Ω

Notes: (4) Typical v alues are f or T

(5) This parameter is periodically sampled and not 100% tested.

= 25°C and nominal supply voltage.

A

3067 FRM T08.1

5

X9511

A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)

Limits

Symbol Parameter

t

GAP

t

DB

t

S SLOW

t

S FAST

(7)

t

PU

t

R VCC

t

ASTO

V

ASTH

V

ASEND

(7)

(7)

(7)

(7)

(7)

Time Between Two Separate Push Button Events 0 µs
Debounce Time 30 60 ms
After Debounce to Wiper Change on a Slow Mode 100 250 375 ms

Wiper Change on a Fast Mode 25 50 75 ms
Power Up to Wiper Stable 500 µs
VCC Power-up Rate
AUTOSTORE Cycle Time 2 ms
AUTOSTORE Threshold Voltage 4 V
AUTOSTORE Cycle End Voltage 3.5 V

AUTOSTORE Cycle Timing Diagram

0.2 50 mV/µs

(6)

Max.

UnitsMin. Typ.

3067 FRM T07.3

5

VOLTS (V)

Notes: V

– AUT OST ORE threshold voltage

ASTH

V

– AUT OST ORE cycle end voltage

ASEND

t

– AUT OST ORE cycle time

ASTO

(6) Typical values are f or TA = 25°C and nominal supply voltage.
(7) This parameter is periodically sampled and not 100% tested.

V

CC

t

ASTO

STORE TIME

TIME (ms)

V

ASTH

AUTOSTORE CYCLE IN PROGRESS

V

ASEND

3067 ILL F04.2

6

X9511

Slow Mode Timing

t

DB

PU

V

W

Notes: (1) MI in the A.C. timing diagram ref ers to the minimum incremental change in the wiper voltage .

t

GAP

MI

3067 ILL F07.1

(1)

Fast Mode Timing

t

DB

PU

t

S FAST

t

S SLOW

V

W

1 Second

Notes: (1) MI in the A.C. timing diagram ref ers to the minimum incremental change in the wiper voltage .

(1)

MI

7

3067 ILL F08

X9511

PACKAGING INFORMATION

8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P

0.430 (10.92)

0.360 (9.14)

0.260 (6.60)

0.240 (6.10)

PIN 1 INDEX

PIN 1

0.300

(7.62) REF.

0.060 (1.52)

0.020 (0.51)

HALF SHOULDER WIDTH ON

ALL END PINS OPTIONAL

SEATING

PLANE

0.150 (3.81)

0.125 (3.18)

0.015 (0.38)
MAX.

TYP. 0.010 (0.25)

0.110 (2.79)

0.090 (2.29)

0.325 (8.25)

0.300 (7.62)

0.065 (1.65)

0.045 (1.14)

0.020 (0.51)

0.016 (0.41)

NOTE:

1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)

2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH

0.145 (3.68)

0.128 (3.25)

0.025 (0.64)

0.015 (0.38)

0°

15°

3926 FHD F01

8

X9511

PACKAGING INFORMATION

8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S

PIN 1 INDEX

(4X) 7°

0.050 (1.27)

0.010 (0.25)

0.020 (0.50)

X 45°

PIN 1

0.014 (0.35)

0.019 (0.49)

0.188 (4.78)

0.197 (5.00)

0.150 (3.80)

0.158 (4.00)

0.004 (0.19)

0.010 (0.25)

0.228 (5.80)

0.244 (6.20)

0.053 (1.35)

0.069 (1.75)

0.050" TYPICAL

0° – 8°

0.0075 (0.19)

0.010 (0.25)

0.016 (0.410)

0.037 (0.937)

0.250"

FOOTPRINT

NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)

3926 FHD F22.1

9

0.050"
TYPICAL

0.030"

TYPICAL

8 PLACES

X9511

ORDERING INFORMATION

X9511X X X

Temperature Range

Blank = Commercial = 0°C to +70°C
I = Industrial = –40°C to +85°C
M = Military = –55°C to +125°C

Package

P = 8-Lead Plastic DIP
S = 8-Lead SOIC

End to End Resistance

Z = 1KΩ
W = 10KΩ

LIMITED WARRANTY

Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc.
makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the
described devices from patent infringement. Xicor, Inc. mak es no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the
right to discontinue production and change specifications and prices at any time and without notice.

Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents,
licenses are implied.

U.S. PA TENTS

Xicor products are covered by one or more of the following U.S. Patents: 4,263,664; 4,274,012; 4,300,212; 4,314,265; 4,326,134; 4,393,481;
4,404,475; 4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829, 482; 4,874, 967;
4,883, 976. Foreign patents and additional patents pending.

LIFE RELA TED POLICY

In situations where semiconductor component failure may endanger life, system designers using this product should design the system with
appropriate error detection and correction, redundancy and back-up features to prev ent such an occurence.

Xicor's products are not authorized for use in critical components in life support devices or systems.

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain
life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably
expected to result in a significant injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or system, or to affect its saf ety or effectiveness.

10