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Hi guys, I am using atmel T89C51AC2 microcontroller for my LCD display. After I had initially everything and executed clear display before printing the charater into the screen. So when I started printing the characters onto the screen, it showed the charater very fast and the it is covered by a line of black dots (data=0xFF). The strange part is, I did not asked the program to write (0xFF) to the screen after that. I dont really get it why this happen? Thanks in advance..
from your title Liquid Crystal Dispaly display. I think it is because your code echoes. If that is not it, your problem most likely is due to insufficient power, some LCDs will do this if power (briefly) drop below some level. Erik