EVAL-ADP5520
Rev. 0 | Page 8 of 24
10.
Set Bit 6 and Bit 7 in Register 0x00 high; then program
these settings by clicking the
Program 0x00
button.
The backlight turns on in the daylight operating zone and
is driven by the current chosen in Step 1.
If you move your finger close to the photosensor (D2) on
the daughterboard, the backlight automatically switches to
the office operating zone
and is driven by the current
chosen in Step 2.
If you move your finger even closer to the photosensor
(D2) on the daughterboard, the backlight automatically
switches to the dark operating zone
1
and is driven by the
current chosen in Step 3.
11.
To adjust the ambient light sensor response time, change
response time values in the
ALS Filter time
drop-down
box, and then program this setting by clicking the
Program 0x0C
button.
You can also enable the fade timers for smooth transition
between operating zones.
1
You should experiment with these thresholds to determine what works best
in the given ambient light. A poorly lit office environment may require lower
threshold points.
