Need Data Sheet

[Chuck Guzis]

On 10 Jul 2007 at 15:08, Ethan Dicks wrote:

> On 7/9/07, Chuck Guzis <cclist at sydex.com> wrote:
> > OTOH, there's a nice 16bit SRAM in some modems, such as the Hayes
> > 28.8K external models.  In an 0.300" wide DIP too.
> 
> Oooh... that could be fun to play with.  I didn't figure that a cache
> SRAM was anything other than 4-bits wide (386/486 era) or 8-bits wide
> (486/Pentium era), especially since I've used a bog standard cache RAM
> on an 1802, but knowing there really are 16-bit-wide SRAMs could be
> fun for, say, a 68000-based board, or even throwing away 4 bits and
> using it as a 12-bit-wide single part for a PDP-8.

There are lots of 16-bit SRAMs, but (my mistake) not in a DIP style.  
The Alliance AS7C1026 for instance gives you 64Kx16 bits in a 44 pin 
TSOP SOJ--as fast as 10 nsec.

The DIPs seem to be restricted to 8 bit wide memories, such as the 
Alliance AS7C1024 (128Kx8 in 32 pins 0.300 SOJ DIP found in the Zoom 
56K modem).  Just too many pins, I guess when the width goes to 16.

But why stop with 64Kx16 SRAM?  There's the Maxwell 89C1632 
512Kx32bit SRAM in a 68 pin QFP...

Cheers,
Chuck