89c52

[mukesh]

hello;

now i have with me 89s52 available with me ? so can i use this controller in place of 89c51?with the same code written as that for 89c51?

so please help me in that note so that i can start work on that soon!thanks for your visit!!

 

 

[dagakshay]

yes, you can use s52 instead of c51… they are pin compatiable…… 

[Ahmet]

actually c- stands for cmos technology……nothing more than that so their is no difference b/w them in case of pin configuration………..

[mukesh]

ok;

thanks for taking keen intrest in my querry;i appreciate it ;but i want to know that the code written for 89c52 can actually be compatiable with 89s52 without any short of madification i mean any madificaton so please let me know!!

[dagakshay]

ya i think most of codes are compatiable… but the other way round i think may not be i mean the code for c52 will work for s52 series but the codes for s52 may not work for c52….

 

for example s series 8051 controller contains inbuit SPI(serial peripherial interface), if you use if you use that in your code them it will not be compatialbe with c52 series since it doesn’t contains any inbilt SPI…

[shylaja]

hi freinds……..

 

please help me  to connect jhd162a lcddisplay with 89c52 microcontroller

[balaji.n]

/*hi shylaja ref the code */

/*program for lcd interfacing programed by  balaji any bug report [email protected]*/

 

#include <reg51.h>

sfr ldata = 0x90; //P1=LCD data pins

sbit rs = P2^0;

sbit rw = P2^1;

sbit en = P2^2;

sbit busy = P1^7;

void lcdcmd(unsigned char value);

void MSDelay(unsigned int itime);

void lcddata(unsigned char value);

void lcdready();

   void lcdstring(char *string);

void main()

{

lcdcmd(0x38);

lcdcmd(0x0E);

lcdcmd(0x01);

lcdcmd(0x06);

lcdcmd(0x80); //line 1, position 6

while(1)

{

lcdcmd(0x80);

lcdstring(” welcmoe”);

}

}

 

void lcdcmd(unsigned char value)

{

lcdready(); //check the LCD busy flag

ldata = value; //put the value on the pins

rs = 0;

rw = 0;

en = 1; //strobe the enable pin

MSDelay(1);

en = 0;

return;

}

void lcddata(unsigned char value)

{

lcdready(); //check the LCD busy flag

ldata = value; //put the value on the pins

rs = 1;

rw = 0;

en = 1; //strobe the enable pin

MSDelay(1);

en = 0;

return;

}

void lcdready()

{

busy = 1; //make the busy pin at input

rs = 0;

rw = 1;

while(busy==1)

{ //wait here for busy flag

en = 0; //strobe the enable pin

MSDelay(1);

en = 1;

}

}

void MSDelay(unsigned int itime)

{

unsigned int i, j;

for(i=0;i<itime;i++)

for(j=0;j<1275;j++);

}

void lcdstring(char *string)

{

 while(*string++)

 lcddata(*string);

 }

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