Confrused on CFAH0802A operating voltage for Backlight
OK a real newbie here -
I think I understand VO is power for the backlight - I'm lighting up the backlight with 5V through a 5ohm resistor.
That part seems to be OK.
What I'm lost on is the pads RA and RK on the back of the LCD module itself. Power and ground has to go across the pads to light up the backlight - Are these for:
A) Resistors to limit the current?
B) Resistors to Adjust contrast?
C) Something else I'm just not seeing here?
Thanks!
-Jerry
OK a real newbie here -
I think I understand VO is power for the backlight - I'm lighting up the backlight with 5V through a 5ohm resistor.
That part seems to be OK.
What I'm lost on is the pads RA and RK on the back of the LCD module itself. Power and ground has to go across the pads to light up the backlight - Are these for:
A) Resistors to limit the current?
B) Resistors to Adjust contrast?
C) Something else I'm just not seeing here?
Thanks!
-Jerry
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