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| HD6417706 Datasheet, PDF (684/709 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series | |||
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B.4 Pin States in Access to Each Address Space
Table B.3 Pin States (Normal Memory/Little Endian)
Pin
CS6 to CS2, CS0
RD
RD/WR
BS
RASU/PTD[1]
RASL/PTD[0]
CASL/PTD[2]
CASU/PTD[3]
WE0/DQMLL
WE1/WE/DQMLU
WE2/ICIORD/DQMUL/
PTC[1]
WE3/ICIOWR/DQMUU/
PTC[2]
CE2A/PTD[6]
CE2B/PTD[7]
CKE
WAIT
IOIS16
A25 to A0
D7 to D0
D15 to D8
D31 to D16
8-Bit Bus Width
Byte/Word/Long-
word Access
Enabled
R Low
W High
R High
W Low
Enabled
High
High
High
High
R High
W Low
R High
W High
R High
W High
R High
W High
High
High
Disabled
Enabled*1
Disabled
Address
Valid data
High-Z*2
High-Z*2
Byte Access
(Address 2n)
Enabled
Low
High
High
Low
Enabled
High
High
High
High
High
Low
High
High
High
High
High
High
High
High
Disabled
Enabled*1
Disabled
Address
Valid data
Invalid data
High-Z*2
16-Bit Bus Width
Byte Access
(Address 2n + 1)
Word/Longword
Access
Enabled
Enabled
Low
Low
High
High
High
High
Low
Low
Enabled
Enabled
High
High
High
High
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. 4.00, 03/04, page 638 of 660
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