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The DP8400DRAM interface familyprovides complete solu-
tions to memory support This begins with the LSI functions
such as the DP8400 expandable error checkercorrector
and the DP8409A DRAM controllerdriver 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 representativeor Nation-
al Semiconductor directly
TLF5012–18
FIGURE 14Flexible Application ofthe DP8409A andDP8400
This FigureShows an Applicationwith a 16-BitMicroprocessor
TABLE VIIThe DP84300 Seriesof Interface
Circuits forVarious 16-Bit Microprocessors
Microprocessor
System Using
DP84XX DRAMControllerDriver
National TI DP84412
Series 32000
National TI DP84512
Series 32332
Motorola DP84322or
680000810 DP84422
Motorola
DP84522
68020
Intel
DP84532
80286
Intel
DP84432
808618688188
Zilog (2) 74S64
8000 (1) 74S04
12