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main difference between pic18f452 and pic 16f877a

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lina889

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i just want to know the difference between 16F877A & 18f452
when i use one of them to interface
3 DC motor
9 sensor
led
interface with PC or lcd ???????
 

Do one thing. Download the data sheets of the controllers you have mentioned above & just go through the device overview page of both of them,compare the controller specs & there is your answer!!!!!!!!!! Try it.
Regards,
Jerin.
 

incomplete_jerin said:
Do one thing. Download the data sheets of the controllers you have mentioned above & just go through the device overview page of both of them,compare the controller specs & there is your answer!!!!!!!!!! Try it.
Regards,
Jerin.
Click to expand...
i do that and i find that the main different in
16f877a 18f8452
data memory 368 1536
for what we use the data memory is it for store the program in it ????
and this difference
for 16f the flash program memory ( 14 bit words ) is 8k
and for 18f there program memory(word ) 32k
and there program instruction 16384 (instruction)
this part i cant understand ???
for what we use the program memory ????
what is the difference between program memory(word) and program memory (instruction)???
 

Data memory = where you place your variables. You can read and write values.

Program memory = where the application is stored. Some chips allows parts of the program memory to be modified in blocks (segments), but you can't store variables in the program memory. It is normally possible to store constants - i.e. initialized variables that you do not change - in the program memory.

For more reference check the following links:
**broken link removed**.
difference between data and program memory.
Regards,
Jerin. :)
 

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