AN3090

Auto power-saving feature

Doc ID16496 Rev 1

15/19

Figure 10 shows the typical shape of the first output turn-on when the device switches from

auto power-saving to normal mode.

Figure 10.

First out “ON” after resuming normal mode

The following signals are shown on the plot above:

●

Ch1 (yellow) = SDI signal

●

Ch2 (blue) = CLK signal

●

Ch3 (purple) = LE/DM1

●

Ch4 (green) = first output switched on after return from auto power-saving to normal

mode

5.1

Value added by the auto power-saving feature

To demonstrate the added benefits provided by the auto power-saving feature, consider

a typical application, such as an LED display panel supplied by battery cell, where 100

STP16DPPS05 devices are used.

(Where n is the number of STP16DPPS05 devices used).