intersil X9511 DATA SHEET

®

www.BDTIC.com/Intersil

X9511

Single Push Button Controlled Potentiometer (XDCP™)

Data Sheet FN8205.3February 2, 2007

Linear, 32 Taps, Push Button Controlled,
Terminal Voltage ±5V

FEATURES

• Push button controlled

• Low power CMOS
—Active current, 3mA max
—Standby current, 100µA typical

• 31 resistive elements
—Temperature compensated
—±20% end to end resistance range
—-5V to +5V range

• 32 wiper tap points
—Wiper positioned via two push button inputs
—Slow and fast scan modes
—AUTOSTORE
—Manual store option
—Wiper position stored in nonvolatile memory

and recalled on power-up

• 100 year wiper position data retention

• X9511W = 10kΩ

• Packages
—8 Ld PDIP
—8 Ld SOIC

• Pb-free plus anneal available (RoHS compliant)

®

option

DESCRIPTION

The Intersil X9511 is a push button controlled potenti­ometer that 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 subsequent power-on operation.
The resolution of the X9511 is equal to the maximum

resistance value divided by 31. As an example, for the
X9511W (10kΩ) each tap po int represent s 323Ω.

All Intersil nonvolatile products are designed and
tested for applications requiring extended endurance
and data retention.

ORDERING INFORMATION

R

PART NUMBER PART MARKING

X9511WP X9511WP 10 0 to +70 8 Ld PDIP MDP0031
X9511WPZ (Note) X9511WP Z 0 to +70 8 Ld PDIP*** (Pb-free) MDP0031
X9511WPI X9511WP I -40 to +85 8 Ld PDIP MDP0031
X9511WPIZ (Note) X9511WP Z I -40 to +85 8 Ld PDIP*** (Pb-free) MDP0031
X9511WS** X9511W 0 to +70 8 Ld SOIC MDP0027

,

X9511WSZ*
X9511WSI*
X9511WSIZ*

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials
and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering
operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.

*Add "T1" suffix for tape and reel.
**Add "T2" suffix for tape and reel.
***Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder

processing applications.

**(Note) X9511W Z 0 to +70 8 Ld SOIC (Pb-free) MDP0027

,

** X9511W I -40 to +85 8 Ld SOIC MDP0027

,

** (Note) X9511W Z I -40 to +85 8 Ld SOIC (Pb-free) MDP0027

TOTAL

(kΩ)

TEMPERATURE

RANGE (°C) PACKAGE PKG. DWG. #

1

XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006, 2007. All Rights Reserved

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

BLOCK DIAGRAM

www.BDTIC.com/Intersil

X9511

PU
PD

ASE

5-BIT
UP/DOWN
COUNTER

5-BIT

EEPROM
MEMORY

STORE AND

RECALL

CONTROL

CIRCUITRY

31

30

29

28

ONE

OF

THIRTY-TWO

DECODER

V

H

TRANSFER

GATES

2

1

0

RESISTOR

ARRAY

V

L

V

W

2

FN8205.3

February 2, 2007

X9511

www.BDTIC.com/Intersil

PIN DESCRIPTIONS

and VL/R

V

H/RH

L

The high (VH/RH) and low (VL/RL) terminals of the
X9511 are 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

and VH/RH are in reference

L/RL

to the relative position of the terminal in relation to
wiper movement direction selected by the PU and PD
inputs, and not the voltage potential on the ter minal.

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 VCC powers

V

IL

down, an automatic store cycle takes place.

- AUTOSTORE is disabled. A LOW to HIGH will

V

IH

initiate a manual store operation. This is for the 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 EEPROM.

PIN CONFIGURATION

DIP/SOIC

PU

1

PD

2

V

H

V

SS

X9511

3

4

V

8

7

6

5

CC

ASE

V

L

V

W

PIN NAMES

SYMBOL DESCRIPTION

VH/R

V

W/RW

V

L/RL

V

V

PU
PD

ASE

SS

CC

High Terminal

H

Wiper Terminal
Low Terminal
Ground
Supply Voltage
Push Up Input
Push Down Input
AUTOSTORE Enable Input

DEVICE OPERATION

There are three sections of the X951 1: the input control,
counter and decode section; the EEPROM 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 EEPROM 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 ex ternal push
button switch 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 for 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 bu tton is held for longer
than 1 second the device will go into the fast scan
mode. As soon as the button is released the X951 1 will
return to a standby condition.

3

FN8205.3

February 2, 2007