• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Hitachi LCD

Not open for further replies.


New Member
Dear Folks,

A quick question:

If you have a HDD44780 LCD with built in LED (backlight)

Does the Light come on automatically when data is sent to the LCD???

Do you have to turn the backilght ON-OFF using external control??

Thanx in advance!


Active Member
There should be 2 pins to supply power to the backlight.
Normally, the backlight is completely independent of the rest.
Not open for further replies.

EE World Online Articles