• ds89C420 watchdog
    hi all, i've a system with 2 code memories, the internal flash of the chip and an external 29b040. I've a "forced watchdog reset" function that works if i call it from external flash, but running...
  • INTER FACING WITH PRINTER
    HI friends i m going do the project on 89c52 interface with parallel printer ..... the main aim of the project is to send the charcter to the printer to print it ,that character is recieved from...
  • About using DS89C420 in fast mode
    Hi, I have just started using DS89C420 microcontroller. I wanted to know the setting needed to be done in the SFRs so that I can use it in 1 cycle per operation mode as compared to default 89C52...
  • Wrong simulation time for Dallas DS89C420 ?
    Hi, here is code: void float_test( void ) { int a; float f; f=4.44; for(a=0; a<100; a++) f *= f/2.25; } I use simulator for simulating execution time of shown function. When I select...
  • about dual serial ports of ds89c420
    hello, i want use dual serial port of ds89c420. i how to initalize the serial ports and how ser the serial port 1 to the hig priority mode. in my application i want recive only from the serial1 and...