9

FN6679.0

March 24, 2008

Shutdown Mode

The ISL22512 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 5. 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 ISL22512 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

ISL22512