Forums

ASYNC SRAM selection

Started by Neven Colak March 25, 2004
Hi,

Does anyone know if 4ns ASYNC SRAM is available?  I am designing a
system which connects to a 64-bit TS202 tigersharc DSP at a system
clock of 100MHz and in order to get a zero-wait state system I need
4ns ASYNC SRAM.. perferably in a 64-bit package (but highly
unlikely)...  I'd be happy to find a 16 bit device and just populate 4
of them.

Any help is appreciated.

Neven
Neven Colak wrote:
> > Hi, > > Does anyone know if 4ns ASYNC SRAM is available? I am designing a > system which connects to a 64-bit TS202 tigersharc DSP at a system > clock of 100MHz and in order to get a zero-wait state system I need > 4ns ASYNC SRAM.. perferably in a 64-bit package (but highly > unlikely)... I'd be happy to find a 16 bit device and just populate 4 > of them. > > Any help is appreciated.
I have never seen any. I know they make 8 ns parts as of a few years ago. They may be making as fast as 6 ns now, but I seriously doubt that 4 ns parts exist. Heck even sync rams barely run at the equivalent to that, 250 MHz. Async rams are becoming specialty parts as most apps move to sync rams. Most current design efforts are in multi-port async rams for comms work. So don't expect async rams to continue to improve performance. -- Rick "rickman" Collins rick.collins@XYarius.com Ignore the reply address. To email me use the above address with the XY removed. Arius - A Signal Processing Solutions Company Specializing in DSP and FPGA design URL http://www.arius.com 4 King Ave 301-682-7772 Voice Frederick, MD 21701-3110 301-682-7666 FAX