AS4C14405-50 查看數據表（PDF） - Alliance Semiconductor
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AS4C14405-50 Datasheet PDF : 16 Pages
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AS4C14400
®
Timing waveform of fast page mode read-write cycle
tRASP
RAS
CAS
tCSH
tPCM
tRCD
tRAD
AAAAAAAAAAAAAAAA
tCAS
tCP
Address
WE
tASR
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Row
tRAH
AAAAAAAAAAAAAAAAAAAA Column AAAAAAAAAAAAtAAAACAAAAAAAAAHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Column
tRWD
tCWL
AAAAAAAAtCAAAAAAAAAHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
tRCS
tCWD
tCWD
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
tAWD
tOEA
tOEZ
tOED
OE
tAA
tDH
tRAC
tDS
tDS
tCLZ
tCLZ
I/O
AAAAAAAAAAAA tCADAAAACaAAAAtAAAAaAAAAOAAAA uDtata In
AAAAAAAAAAAA tCACAAAAAAAAAAAAAAAAAAAA Data In
Data Out
tRP
tRAL
tCAH
Column
tCWD
tAWD
tOEA
AAAAAAAAAAAAAAAA
tCRP
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
tRWL
tCWL
tWP
tCAP
tCLZ
AAAAAAAAAAAA tCADCAAAAaAAAAtAAAAaAAAAOAAAA ut
Data In
Timing waveform of RAS only refresh cycle
RAS
CAS
Address
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
tARS
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
tCRP
Row
tRAH
tRC
tRAS
tRP
tRPC
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
(WE = OE = VIH or VIL)
Timing waveform of CAS-before-RAS refresh cycle
RAS
tRC
tRP
CAS
tRPC
tCPN
tCSR
tCHR
tOFF
I/O
(WE = OE = VIH or VIL)
tRAS
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
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