LCD connection

[ycho]

Hi,

I have a simple question regarding LCD.
What is the different between connect 4data bus (data bus4-7) and connect 8data bus (data bus 0-7) to PIC?

My project required to display some simple words and number.
I should connect 4data bus or 8data bus to the PIC?
by the way, i am using 2*16 LCD

Thanks for the reply

 

[tom_pay]

Hi

If you use an 8 bit bus the data will be conveyed a lot quicker and the program will be a fair bit easier to write and debug. However it will use 4 more pins. The 4 bit bus will take a bit more time to write to the LCD and the program will be a bit more complex.

Whenever I use an LCD I use the 4 bit bus. Mainly because it uses less pins.

Hope this helps

Tom