• Replacement for the 80c552
    Hi there! An old project of mine is runnining on a 80C552/30MHz (KBA, is the psot fix, I think). This processor is obsolete, but I need the speed (I think). The software was written by somebody else...
  • Addressing Port 5 on a 80C552?
    I want to use a single Port line from P5 as an input! Are there special settings for this port (e.g. setting a bit in a register;...)? Exsist some special configuration in µVision? The standrad way...
  • EFFECT OF INBUILT OPTIMIZATION LEVELS IN CX51
    Hi all, I am using Keil version "Vision3v3.53". It has 10(0-9) levels of optimization during compiling. I am working on a project where requirement is to reduce the code size. In default settings...
  • philips 80c552 example spi programs
    hai please anybody send spi programs 80c552 microcontroller please very urgent.
  • Interrupt not working(tx in softuart)(reception is inbuilt uart in the interrupt mode)
    #include<softuart.h> #include<stdio.h> #include<reg51.h> void uart_init(); sbit sw=P1^7; unsigned char rx(); code unsigned char rd[] = "AT+CMGR=1"; code unsigned char ne[] = "AT+CNMI=2,2,0,0,0"; unsigned...