Confuse with program memory and eeprom

khalis · Joined: 12 Feb 2009 Posts: 54

Hi,

A this moment, I'm trying to make a simple data logger where I can save data into pic memory. So the problem was I'm trying to save the data into on-chip program memory and not in eeprom. As far as I know, the memory size for eeprom is limited compared to on-chip memory.
Hope someone can clear me out about the problem that I have right now.

Thanks.

andyfraser · Joined: 04 May 2004 Posts: 47 Location: UK

As always, you should post your PIC type.

I would suggest that EEPROM is typically used to store settings and parameters and is usually too small to use as data logging memory. Also, the program memory is not really a suitable place to be storing logged data. You should look at external SPI/I2C EEPROM or even adding an SD card interface to your design.

Andy

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

CCS has an example of a data logger which uses flash memory:

khalis · Joined: 12 Feb 2009 Posts: 54

Sorry because did not tell the PIC that I used. I'm using PIC18F2525 and I am planning to save 3 bytes at once. I need an explanation towards advantage and disadvantage between using program memory and eeprom. I have seen the example and is it 'flash memory', refers to program memory?
Thanks

PCM programmer · Joined: 06 Sep 2003 Posts: 21708