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HD6417706 Datasheet, PDF (692/709 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
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Table B.7 Pin States (Synchronous DRAM/Little Endian)
32-Bit Bus Width
Byte
Byte
Byte
Byte
Word
Word
Access Access Access Access Access Access
(Address (Address (Address (Address (Address (Address Longword
Pin
4n)
4n + 1)
4n + 2)
4n + 3)
4n)
4n + 2)
Access
CS6 to CS2, CS0
Enabled Enabled Enabled Enabled Enabled Enabled Enabled
RD
R High
High
High
High
High
High
High
W High
High
High
High
High
High
High
RD/WR
R High
High
High
High
High
High
High
W Low
Low
Low
Low
Low
Low
Low
BS
RASU/PTD[1]
RASL/PTD[0]
CASL/PTD[2]
CASU/PTD[3]
Enabled Enabled Enabled Enabled Enabled Enabled Enabled
High/Low*1 High/Low*1 High/Low*1 High/Low*1 High/Low*1 High/Low*1 High/Low*1
Low/High*1 Low/High*1 Low/High*1 Low/High*1 Low/High*1 Low/High*1 Low/High*1
High/Low*1 High/Low*1 High/Low*1 High/Low*1 High/Low*1 High/Low*1 High/Low*1
Low/High*1 Low/High*1 Low/High*1 Low/High*1 Low/High*1 Low/High*1 Low/High*1
DQMLL/WE0
R Low
High
High
High
Low
High
Low
W Low
High
High
High
Low
High
Low
DQMLU/WE1
R High
Low
High
High
Low
High
Low
W High
Low
High
High
Low
High
Low
DQMUL/WE2/ICIORD
R High
High
Low
High
High
Low
Low
W High
High
Low
High
High
Low
Low
DQMUU/WE3/ICIOWR
R High
High
High
Low
High
Low
Low
W High
High
High
Low
High
Low
Low
CE2A/PTD[6]
High
High
High
High
High
High
High
CE2B/PTD[7]
CKE
High
High*2
High
High*2
High
High*2
High
High*2
High
High*2
High
High*2
High
High*2
WAIT
Disabled Disabled Disabled Disabled Disabled Disabled Disabled
IOIS16
Disabled Disabled Disabled Disabled Disabled Disabled Disabled
A25 to A0
Address Address Address Address Address Address Address
command command command command command command command
D7 to D0
Valid data Invalid data Invalid data Invalid data Valid data Invalid data Valid data
D15 to D8
Invalid data Valid data Invalid data Invalid data Valid data Invalid data Valid data
D23 to D16
Invalid data Invalid data Valid data Invalid data Invalid data Valid data Valid data
D31 to D24
Invalid data Invalid data Invalid data Valid data
Notes: 1. Lower 32-Mbyte access/Upper 32-Mbyte access
2. Normally high. Low in self-refreshing.
Invalid data Valid data
Valid data
Rev. 4.00, 03/04, page 646 of 660
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