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3.18 Illumination Sensor
Illumination Sensor adjusts LCD backlight current by detecting the surrounding brightness.
If user checks the automatic brightness menu, LCD backlight current adjusting is to be enable automatically.
U1600 : BH1721 IC
SENSOR_I2C_SDA
LGE Internal Use Only
AMBIENT_3V3
U1600
BH1721FVC
1
VCC
2
GND
3
SDA
C1602
1u
Figure. Illumination Sensor Schematic
Figure. Illumination Sensor Block Diagram
- 56 -
AMBIENT_3V3
5
SCL
SENSOR_I2C_SCL
4
DVI
Copyright © 2011 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
AMBIENT_RST
Only for training and service purposes
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