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SH7708 数据表(PDF) 594 Page - Renesas Technology Corp |
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SH7708 数据表(HTML) 594 Page - Renesas Technology Corp |
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594 / 633 page ![]() 576 Table A.7 Pin States (DRAM/Little-Endian) (cont) 32-Bit Bus Width Pin Byte Access (Address 4n) Byte Access (Address 4n + 1) Byte Access (Address 4n + 2) Byte Access (Address 4n + 3) Word Access (Address 4n) Word Access (Address 4n + 2) Longword Access CS6 to 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 Enabled Enabled Enabled Enabled Enabled Enabled Enabled RAS/CE Low Low Low Low Low Low Low CAS/CASLL/OE Low High High High Low High Low CASLH High Low High High Low High Low CASHL/CAS2L High High Low High High Low Low CASHH/CAS2H High High High Low High Low Low DQMLL/ WE0 R High High High High High High High W High High High High High High High DQMLU/ WE1 R High High High High High High High W High High High High High High High DQMUL/ WE2/ICIORD R High High High High High High High W High High High High High High High DQMUU/ WE3/ICIOWR R High High High High High High High W High High High High High High High MD3/ CE2A High-Z or high*1 High-Z or high*1 High-Z or high*1 High-Z or high*1 High-Z or high*1 High-Z or high*1 High-Z or high*1 MD4/ CE2B High-Z or high*2 High-Z or high*2 High-Z or high*2 High-Z or high*2 High-Z or high*2 High-Z or high*2 High-Z or high*2 MD5/ RAS2 High-Z High-Z High-Z High-Z High-Z High-Z High-Z CKE Disabled Disabled Disabled Disabled Disabled Disabled Disabled 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 D7 to D0 Valid data Invalid data Invalid data Invalid data Valid data Invalid data Valid data |
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