Folder On/Off Operation - LG U8290 Service Manual

3.10.6 Folder ON/OFF Operation

There is a magnet to detect the folder status, opened or closed.
If a magnet is close to the hall-effect switch, the voltage at pin2 of U604 goes to 0V. Otherwise, 2.6V.
This folder signal is delivered to MSM6250 GPIO80.
VREG_MSMP_2.6V
FOLDER_DETECT
Figure 3.10.6-1 Schematic of Folder ON/OFF detection circuit on keypad
FOLDER DETECT
R616
62
C612 C639
0.1u 10p
- 59 -
3. TECHNICAL BRIEF
U604
A3212ELH
VDD
GND
OUT