368 or 256 RAM?

Joshua Lai · Joined: 19 Jul 2004 Posts: 42 Location: Malaysia, PJ

I browsed for PIC16F877 on FARNELL and found that there are PIC with 256 bytes RAM and 368 bytes RAM. The PIC number is the same PIC16F877-20/P, but order number is different. What is the difference?

And there is PIC16F877A-I/P with 372 bytes RAM, why so odd?

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Browse here instead:
http://www.digikey.com/

Joshua Lai · Joined: 19 Jul 2004 Posts: 42 Location: Malaysia, PJ

I browse Farnell website because there is one distributor nearby. Why you asked me to browse digi-key?

Is there really have PIC 16F877 with different RAM size?

Foppie · Joined: 16 Sep 2005 Posts: 138 Location: The Netherlands

I think PCM prgogrammer asked you to surf there because the site will give you the information you want.

It sais for the PIC16F877-20/PT that it has 386 bytes RAM and 256 bytes EEPROM. For the PIC16F877A-I/PT it gives the smae numbers.

Search the site for PIC16F877 and it will give a nice table. Just look at the table and you'll find the information you search!

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

I asked him to check Digikey because it's obvious that the person
typing in the chip information at Farnells is extremely careless.
What if that attitude affects other things besides the chip specs ?
If you go to Digikey, all the information on those PICs is correct.

Use Farnells if you feel comfortable with them, but the paragraph
above explains what I implied in my short comment before.