SH7080_09 Datasheet, PDF (1582/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Appendix
External Space (SDRAM)
16-bit Space
Pin Name
Upper Byte
Lower Byte
Word/Longword
AH
L
L
L
FRAME
H
H
H
RDWR R H
H
H
WL
L
L
RD
RH
H
H
WH
H
H
ICIORD R H
H
H
WH
H
H
WRHH R H
H
H
WH
H
H
WRHL
RH
H
H
WH
H
H
WRH
RH
H
H
WH
H
H
WRL
RH
H
H
WH
H
H
WE
RH
H
H
WH
H
H
ICIOWR R H
H
H
WH
H
H
A29 to A0
Address
Address
Address
D31 to D24
Hi-Z
Hi-Z
Hi-Z
D23 to D16
Hi-Z
Hi-Z
Hi-Z
D15 to D8
Data
Hi-Z
Data
D7 to D0
Hi-Z
Data
Data
[Legend]
R:
Read
W:
Write
Notes: 1. Chip select signals corresponding to accessed areas = Low.
The other chip select signals = High.
2. RASL/CASL = Low when address wherein A25 = 0 is accessed. RASU/CASU = Low
when address wherein A25 = 1 is accessed.
Rev. 4.00 Dec. 15, 2009 Page 1522 of 1558
REJ09B0181-0400