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

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

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. #

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

ONE

THIRTY-TWO

DECODER

TRANSFER

GATES

RESISTOR

ARRAY

FN8205.3

February 2, 2007

X9511

www.BDTIC.com/Intersil

PIN DESCRIPTIONS

and VL/R

H/RH

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.

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.

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

down, an automatic store cycle takes place.

- AUTOSTORE is disabled. A LOW to HIGH will

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

X9511

ASE

PIN NAMES

SYMBOL DESCRIPTION

VH/R

W/RW

L/RL

PU PD

ASE

High Terminal

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.

FN8205.3

February 2, 2007

+ 6 hidden pages