-----Original Message-----
From: Call, Shawn Michael <CALLS@CORAL.INDSTATE.EDU>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Saturday, December 06, 1997 21:28
Subject: Beginner RAM/ROM questions


>    For my microcontroller class at school, I have to interface an
>Intel 8085 chip with a 32K combination of RAM and ROM.
>Unfortunately, most of the data books that I've seen don't list RAMs
>that small.  This would have to be a parrallel interface with an
>address bus.  Does anyone know where on the web I can find files
>(.pdf or other) for parts like these?


    Do you have to use only 32K of ram, or could you say have 64K but only
address 32K? This would be much easier because there are a ton of 64K
sources out there. Aside from that, there are 16K and 32K ram chips out
there, not too easy to find anymore though.

>    Also, how many address pins would I need to address 32K of memory?

    Well 32K = 2^15, so you need 15 address lines, and I beleive the 8085
has 16 address lines. TTYL and good luck.