HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 180
HD6433044
Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6433044.pdf
(867 pages)
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Example 2: Connection to 2WE 4-Mbit DRAM (16-Mbyte Mode): Figure 7-9 shows typical
interconnections to a single 2WE 4-Mbit DRAM, and the corresponding address map. Figure 7-10
shows a setup procedure to be followed by a program for this example.
The DRAM in this example has 10-bit row addresses and 8-bit column addresses. Its address area
is H'600000 to H'67FFFF.
Figure 7-9 Interconnections and Address Map for 2WE 4-Mbit DRAM (Example)
H8/3048 Series
H'600000
H'67FFFF
H'680000
H'7FFFFF
D
15
HWR
to D
LWR
CS
A
A
RD
A
A
A
A
A
A
A
A
18
17
8
7
6
5
4
3
2
1
3
0
DRAM area
Not used
a. Interconnections (example)
b. Address map
166
Area 3 (16-Mbyte mode)
2
row address, 8-bit column address,
and
WE
A
A
A
A
A
A
A
A
A
A
RAS
CAS
UW
LW
OE
I/O
9
8
7
6
5
4
3
2
1
0
15
4-Mbit DRAM with 10-bit
16-bit organization
to I/O
0
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