SH7014 Datasheet, PDF (744/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Appendix C Pin States
Table C.3 Pin Settings for Normal External Space
Normal External Space
16-Bit Space
Pin Name
8-Bit Space Upper Word
Lower Word
Word/Longword
CS0 to CS2
Valid
Valid
Valid
Valid
CS3
H
H
H
H
RAS*¹
H
H
H
H
CASH*²
H
H
H
H
CASL*²
H
H
H
H
RDWR
H
H
H
H
AH
L
L
L
L
RD
RL
L
L
L
WH
H
H
H
WRH
RH
H
H
H
WH
L
H
L
WRL
RH
H
H
H
WL
H
L
L
A21 to A0
Address
Address
Address
Address
D15 to D8
Hi-Z
Data
Hi-Z
Data
D7 to D0
Data
Hi-Z
Data
Data
Legend:
R: Read
W: Write
Valid: Chip select signal corresponding with accessed area is low; chip select signal in other
cases is high.
Notes: 1. L asserted in RAS down state or refresh state.
2. L asserted in refresh state.
Rev.5.00 Sep. 27, 2007 Page 710 of 716
REJ09B0398-0500