Hi all! I m a SY E&C student. And m working on a microcontroller based project.The one i m using is AT89C2051. To test it i wrote a sample program and loaded it in the controller using a universal programmer. The sample program would write a low to P1.3 continuously using an infinite loop. but wen i started the controller after making all the external hardware connections(reset and crystal oscillator , Vcc and GND) instead of showing logic low it gives me +5V only at pin P1.3. Can anybody help me troubleshoot it?
Time for mister ,berik to correct his name before making any more posts. You have spent the last week with this alias - how is it pronounciated?
and processed