AVR-Chat

At 09:35 PM 3/27/2005, Reza wrote:

>Hi;
>
>bcz of my oldness, I didn't understand exactly your
>problem, but using one SRAM with more than one
>cpu/micro depends on application. but as usual, you
>shoud use but tranceivers and isolate address/data bus
>of each cpu from the other.

Not really necessary with a microcontroller, if you design carefully.

The chips power up with the ports as inputs.
If you implement a couple of handshaking lines and a few logic gates, you 
can connect both chips to the SRAM directly.
You don't HAVE to use the SRAM interface after all, you can do the lines as 
I/O pins.