How fast (reads and/or writes per second)
How many read/writes per day, week, year ?
Ramtron FRAM could be one choice.

Do you realy have the I/O pins free to both
drive a 12-13 bit address and a 8 bit data bus
on the 16F877 ?

Or you could use a couple of S-in P-out
shift registers to clock out the address
using 2-3 pins and another pair of
shift registers to read/write the databus.

Another way could be to use one of the PICs
with larger internal RAM, see the 18F6xxx
and 18F8xxx lines. Up to 3820 bytes of RAM.

Jan-Erik.


-----Original Message-----
From: Thomas N [mailto:thomasn102@YAHOO.COM]
Sent: den 19 juli 2003 19:55
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC]: External RAM


Hi everyone,
I am designing a LED panel and I need few more kilobytes of RAM. Do you have any suggestion on how to add external RAM to the PIC16F877? I think I will need parallel RAM for faster access.
REgard,
Thomas




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