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The DP8400 DRAM interface family provides complete solu-
tions to memory support. This begins with the LSI functions
such as the DP8400 expandable error checker/corrector
and the DP8409A DRAM controller/driver. It continues with
the DP84240 and the DP84244 high performance buffer/
drivers. Finally, it concludes with easy interface to popular
microprocessors with the use of the DP84XX2 series. It is
the first family of DRAM support circuits designed
for universal applications with multiple microprocessors,
with no manufacturers CPU enjoying a favorite role.
Data sheets and more detailed application information are
available for all the members of the DP8400 family. Contact
your local National Semiconductor representative or Nation-
al Semiconductor directly.
TL/F/5012 – 18
FIGURE 14. Flexible Application of the DP8409A and DP8400.
This Figure Shows an Application with a 16-Bit Microprocessor.
TABLE VII. The DP84300 Series of Interface
Circuits for Various 16-Bit Microprocessors
Microprocessor
System Using
DP84XX DRAM Controller/Driver
National & TI
DP84412
Series 32000
National & TI
DP84512
Series 32332
Motorola
DP84322 or
68000/08/10
DP84422
Motorola
DP84522
68020
Intel
DP84532
80286
Intel
DP84432
8086/186/88/188
Zilog
(2) 74S64
8000
(1) 74S04
12
Summary of Contents for DP8400
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