Extended Data Out Dynamic Random Access Memory
<storage> (EDO DRAM, EDO RAM) A type of
DRAM designed to access nearby memory locations faster than
FPM DRAM.
Extended Data Out DRAM (EDO-DRAM) allows the data outputs to be kept active after the CAS\ signal goes inactive, using an additional signal OE\ to control the data outputs.
This can be used in
pipelined systems for overlapping accesses where the next cycle is started before the data from the last cycle is removed from the bus.
EDO DRAM is primarily used with Intel's
Pentium processors since with slower processors there is no significant performance gain.
To make use of the advanced features of EDO an appropriate chipset, such as
Triton, must be used.
In early 1995, EDO DRAM was available for computers from
Micron,
Gateway 2000, and
Intel Corporation; since then other manufactures followed suit.
Note that in comparison to
Burst EDO EDO is sometimes referred to as "Standard EDO".
