Need Data Sheet
cclist at sydex.com
Tue Jul 10 18:03:27 CDT 2007
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...
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