Without knowing the spec of the LCD, i would check the min signal times for it,
as 40Mhz is very quick, 100ns per intruction, if they work the same as the 16
series PIC.
I can run my LCD, Powertip, at 200ns (20MHz) I just looked on the net for a
datasheet, but can't find one. I would check the signal times are long
enough. I had trouble getting my first LCD working, took a while, but without
this group would of taken longer!
Paul
----- Original Message -----
From: david_wenkang
To: p...
Sent: Friday, February 23, 2007 7:38 AM
Subject: [piclist] Problem with displaying of data on LCD
Hi all,
I am using C18 complier to program PIC18F452 microcontroller to
display data on a LCD display module (Hyundai Korea - HB16202-A).
The microcontroller is connected with an external oscillator
SG531P, and giving it a frequency of 40MHz.
The problem that i encounter is that, i am not able to display any
information or character. I wonder whether is it the oscillator thats
causing this problem.
I have look through the data-sheet of the hitachi lcd display and has
written a C program according to the initialization instructions on
the data-sheet. I even search for initialization instructions online
and have modify the program accordingly. Yet there isn't any display
on the module itself.
So i am asking whether anyone has encountered this problem before or
anyone has solution to this kind of problem?
Hope you all can answer my question. Thank you.