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H8/3003 数据表(PDF) 174 Page - Renesas Technology Corp

部件名 H8/3003
功能描述  microcontroller (MCU)
PDF  715 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8/3003 数据表(HTML) 174 Page - Renesas Technology Corp

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Example 3: Connection to 2
CAS 4-Mbit DRAM (16-Mbyte Mode): Figure 7-11 shows typical
interconnections to a single 2
CAS 4-Mbit DRAM, and the corresponding address map.
Figure 7-12 shows a setup procedure to be followed by a program for this example.
The DRAM in this example has 9-bit row addresses and 9-bit column addresses. Its address area is
H'600000 to H'67FFFF.
Figure 7-11 Interconnections and Address Map for 2
CAS 4-Mbit DRAM (Example)
A
A
A
A
A
A
A
A
A
9
8
7
6
5
4
3
2
1
CS
HWR
LWR
RD
3
D
to D 0
A
A
A
A
A
A
A
A
A
8
7
6
5
4
3
2
1
0
RAS
UCAS
LCAS
WE
OE
I/O
to I/O
15
0
15
H'600000
H'67FFFF
H'680000
H'7FFFFF
H8/3003
2
4-Mbit DRAM with 9-bit
row address, 9-bit column address,
and
16-bit organization
CAS
×
a. Interconnections (example)
b. Address map
DRAM area
Not used
Area 3 (16-Mbyte mode)
156



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