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10.8
Memory Connection Examples
Figures 10.23–10.31 show examples of the memory connections.
As A21–A18 become input ports in power-on reset, they should be handled (e.g.
pulled down) as necessary.
SH704x
32k
×
8 bits
CE
OE
CSn
RD
A0–A14
D0–D7
A0–A14
I/O0–I/O7
ROM
Figure 10.23 8-Bit Data Bus Width ROM Connection
SH704x
256k
×
16 bits
ROM
CE
OE
CSn
RD
A0
A1–A18
D0–D15
A0–A17
I/O0–I/O15
Figure 10.24 16-Bit Data Bus Width ROM Connection
Содержание SH7041 Series
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Страница 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...