SH7137 Datasheet, PDF (1138/1160 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Appendix
B. Pin States of Bus Related Signals
Table B.1 Pin States of Bus Related Signals (1)
Pin Name On-chip ROM Space
On-chip RAM Space
On-chip Peripheral
Module Space
CS0, CS1
H
H
H
RD
RH
H
H
W
H
H
WRL
RH
H
H
W
H
H
A19 to A0
Address*
Address*
Address*
D7 to D0
High-Z
High-Z
High-Z
[Legend]
R:
W:
Note: *
Read
Write
Value of external space address that was previously accessed
Table B.1 Pin States of Bus Related Signals (2)
External Space (Normal Space)
Pin Name
8-bit Space
CS0, CS1
RD
R
Enabled
L
W
H
WRL
R
H
W
L
A19 to A0
Address
D7 to D0
Data
[Legend]
R:
W:
Enabled:
Read
Write
Chip select signals corresponding to accessed areas = Low.
The other chip select signals = High.
Rev. 2.00 Sep. 10, 2008 Page 1112 of 1130
REJ09B0402-0200