X9511WSI datasheet(4/9 Pages) INTERSIL

Part #	X9511WSI

Description	The Intersil X9511 is a push button controlled potenti ometer that is ideal for push button controlled resis tance trimming

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Manufacturer	INTERSIL [Intersil Corporation]

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4

FN8205.3

February 2, 2007

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 extreme.

AUTOSTORE

The value of the counter is stored in EEPROM mem-

ory whenever the chip senses a power-down of VCC

while ASE is enabled (held LOW). When power is

restored, the 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 VSS. If ASE 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.

RTOTAL with VCC Removed

The end to end resistance of the array will fluctuate

once VCC is removed.

3

5

6

8

1

2

7

VCC

2k

Ω

VCC

PU

PD

ASE

VH

VW

VL

VSS

FIGURE 1. TYPICAL CIRCUIT WITH ASE STORE

CONTROLLED BY PUSH BUTTON SWITCH

4

3

5

8

1

2

7

VCC

PU

PD

ASE

VSS

VH

VW

VL

3.3µF

6

FIGURE 2. TYPICAL CIRCUIT WITH ASE STORE PIN USED

IN AUTOSTORE MODE

X9511

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