11

FN6678.1

July 16, 2009

Shutdown Mode

The ISL22511 enters into Shutdown Mode if both PU and PD

inputs are kept LOW for 2 seconds. In this mode, the

resistors array is totally disconnected from its RH pin and the

wiper is moved to position closest to RL pin, as shown in

Figure 13. Note, that PU and PD inputs must be pulled LOW

Timing” on page 7. Otherwise all command will be ignored till

both inputs will be released.

Holding either PU, PD or ASE input LOW for more than

15ms will exit shutdown mode and return wiper to prior

shutdown position. If PU or PD will be held LOW for more

than 250ms, the ISL22511 will start auto-increment or

auto-decrement of wiper position.

The end to end resistance of the array will fluctuate once

RL

RW

RH

FIGURE 13. DCP CONNECTION IN SHUTDOWN MODE

Revision History

The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure

you have the latest Rev.

DATE

REVISION

CHANGE

07/06/09

FN6678.1

Added reliability information on page 1 under Features and EEPROM Specifications in DC Electrical Spec

Table.

03/24/08

FN6678.0

Initial Release to web

ISL22511