AVR-Chat

OK,

anyone have any experience with the Cypress 128 k Byte ram chip

   CY7C109B-15VC     (Digi-Key = CY7C109B-15VXC)

Sure, overkill (15 nSec) if I only need 1/4 that RAM, but available 
for a few dollars.

Peter

Peter Gargano wrote:
> Quick question to someone who has done this recently - the last time I 
> used SRAM on a micro, I used 6116 and 6164 memory (actually more 
> recently I used 4164 DRAMs with a Z80!)  ...
> 
> I can certainly spend time looking at the data sheet to work this out, 
> but on a Mega64 or 128, using external memory, if I'm running a 16 Mhz 
> clock with a 74AHC373 address latch, ..
> 
> 1. what speed SRAM will I need for zero wait states?
> 
> 2. What generally available 32 k byte or larger SRAM chip are 
> generally available these days? I'm assuming the 62256 SMD chips that 
> are readily found on many 10 year old PCBs (HDDs, etc.) are now very 
> hard to source, and certainly unwise to use in a new design.