Shenzhen
Smart Device Technology Co.,Ltd
◆
Backlight Control Port
Use for LVDS screen backlight control
，
the 12V power supply current is not more than 1.5A
，
When
using more than 19 inch screen or screen backlight power in more than 20W
，
backlight power supply
electricity is taken from the other power plate
，
so as not to cause system instability.
Backlight can make
voltage is 5V
，
if other voltage, please add IO level conversion circuit.
The 12V power supply only as a backlight power
output, don't as a power input supply system.
NO.
Definition
Property
Description
1
GND
ground electrode
ground electrode
2
GND
ground electrode
ground electrode
3
BL-ADJ
output
backlight brightness adjust control
4
BL-EN
output
backlight enable control
5
VCC
power
12V output
6
VCC
power
12V output
◆
IO Interface
I/O used for provide peripherals with input/output for controlling signal. Electrical level is 3.3V.
NO.
Definition
Property
Description
1
VCC
power
3.3V output
2
I/O
input/output
GPIO-1
3
I/O
input/output
GPIO-2
4
I/O
input/output
GPIO-3
5
I/O
input/output
GPIO-4
6
GND
ground electrode
ground electrode