SH7080 Datasheet, PDF (1569/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Appendix
External Space (Normal Space)
32-bit Space
Pin Name
WE
Most
Significant Second
Byte
Byte
RH
H
Least
Significant Upper
Third Byte Byte
Word
H
H
H
WH
H
H
H
H
ICIOWR
RH
H
H
H
H
WH
H
H
H
H
A29 to A0
Address Address Address Address Address
D31 to D24
Data
High-Z High-Z High-Z Data
D23 to D16
High-Z Data
High-Z High-Z Data
D15 to D8
High-Z High-Z Data
High-Z High-Z
D7 to D0
High-Z High-Z High-Z Data
High-Z
[Legend]
R:
W:
Enabled:
Read
Write
Chip select signals corresponding to accessed areas = Low.
The other chip select signals = High.
Lower
Word
H
H
H
H
Address
High-Z
High-Z
Data
Data
Longword
H
H
H
H
Address
Data
Data
Data
Data
Table B.1 Pin States of Bus Related Signals (4)
Pin Name
CS0 to CS8
CE1A, CE1B,
CE2A, CE2B
BS
RASU, RASL
CASU, CASL
DQMUU
DQMUL
DQMLU
DQMLL
Upper Byte
Enabled
H
L
H
H
H
H
H
H
External Space (SRAM with Byte Selection)
16-bit Space
Lower Byte
Word/Longword
Enabled
Enabled
H
H
L
L
H
H
H
H
H
H
H
H
H
H
H
H
Rev. 3.00 May 17, 2007 Page 1511 of 1582
REJ09B0181-0300