SH7144_08 Datasheet, PDF (207/930 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series

9. Bus State Controller (BSC)
9.9 Memory Connection Example
Since A21 to A18 function as input ports at power-on reset, take the procedure such as pulling
down as required.
This LSI
CSn
RD
A0 to A14
D0 to D7
32k × 8-bit ROM
CE
OE
A0 to A14
I/O0 to I/O7
Figure 9.10 Example of 8-bit Data Bus Width ROM Connection
This LSI
CSn
RD
A0
A1 to 18
D0 to 15
256k × 16-bit
ROM
CE
OE
A0 to 17
I/O0 to 15
Figure 9.11 Example of 16-bit Data Bus Width ROM Connection
Rev.4.00 Mar. 27, 2008 Page 163 of 882
REJ09B0108-0400