• 89C51 programming
    Hi, A real silly problem. I am currently learning how to program this guy, ATMEL 89C51. I had a LED on Port 1 pin 0. 4MHz crystal with 30pF caps to ground, resent to ground, grounded the uC, 5v to...
  • Using External Interruts of 89C51
    Hi , I'm want to use external interrupt 0 to generate clock on port P1.I am applying a clock on INT0 pin to generate External interrupt zero.I should get similar clock on P1 but nothing I'm getting ...
  • Using External Interruts of 89C51
    Hi , I'm want to use external interrupt 0 to generate clock on port P1.I am applying a clock on INT0 pin to generate External interrupt zero.I should get similar clock on P1 but nothing I'm getting ...
  • External Interrupts 89c51 using Keil Compiler
    Hi , I want to use external interrupts of 89C51 to receive/transmit data using sync modem. Following is the C code i have written but that is not working.I'm using evaluation version of Keil Compiler...
  • Problem in Interfacing a 89C51 and ATMEL 24C04 (External Memory)
    Dear Sir, I am facing a problem in interfacing the AT89C51 with AT24C04 (External memory). the code is as follows: FADDR EQU 0A0h ; fixed address for AT24Cxx EEPROMs MEM_SIZE EQU 20h ; bytes...