HD6417727BP160CV Datasheet, PDF (1062/1098 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/ SH7700 Series

Appendix A Pin Functions
A.3 Pin Status when Accessing Address Spaces
Table A.3 Pin Status (Normal Memory/Little Endian)
8-Bit Bus Width
Pin
Byte/Word/
Byte Access
Longword Access (Address 2n)
CS6 to CS2, CS0
RD
Enabled
R Low
Enabled
Low
W High
High
RD/WR
R High
High
W Low
Low
BS
Enabled
Enabled
RAS
High
High
CAS
High
High
WE0/DQMLL
R High
High
W Low
Low
WE1/DQMLU/WE
R High
High
W High
High
WE2/DQMUL/ICIORD R High
High
W High
High
WE3/DQMUU/ICIOWR R High
High
W High
High
CE2A
High
High
CE2B
High
High
CKE
WAIT
Disabled
Enabled^*1
Disabled
Enabled^*1
IOIS16
Disabled
Disabled
A25 to A0
Address
Address
D7 to D0
D15 to D8
D31 to D16
Valid data
High-Z^*2
High-Z^*2
Valid data
Invalid data
High-Z^*2
16-Bit Bus Width
Byte Access Word/Longword
(Address 2n+1)
Access
Enabled
Enabled
Low
Low
High
High
High
High
Low
Low
Enabled
Enabled
High
High
High
High
High
High
High
Low
High
High
Low
Low
High
High
High
High
High
High
High
High
High
High
High
High
Disabled
Enabled^*1
Disabled
Enabled^*1
Disabled
Disabled
Address
Address
Invalid data
Valid data
Valid data
High-Z^*2
Valid data
High-Z^*2
Rev.6.00 Mar. 27, 2009 Page 1004 of 1036
REJ09B0254-0600