Hi, I am using the atmega162 with a T6963 LCD and GCC compiler. The control bus are in PORT C and data bus PORT A. I am also unsing PORT E pins 1 and 2 to a external circuit(chip select to 2 4514N). The problem: When I set the DDRE pins 1,2 to output, the LCD get trash! I write on lcd and all is fine, but after to assign 'DDRE = 0x06' and write again the LCD is defaced, (Can you reply in english? thank you)
Gast
#364670
Perhaps you can post the code you are using and the schematics?
Gast
#364671
Possible reason: One or two of those port E pins is stuck and using them as output causes high current flow in or out of those pins.