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IC42S16400F-6TL 参数 Datasheet PDF下载

IC42S16400F-6TL图片预览
型号: IC42S16400F-6TL
PDF下载: 下载PDF文件 查看货源
内容描述: 1梅格位×16位× 4银行( 64兆位)同步动态RAM [1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM]
分类和应用: 存储内存集成电路光电二极管动态存储器时钟
文件页数/大小: 55 页 / 822 K
品牌: ISSI [ INTEGRATED SILICON SOLUTION, INC ]
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IS42S16400F  
IC42S16400F  
TRUTH TABLE – CKE (1-4)  
CURRENT STATE  
COMMANDn  
ACTIONn  
CKEn-1  
CKEn  
Power-Downꢀ  
Xꢀ  
MaintainꢀPower-Downꢀ  
MaintainꢀSelfꢀRefreshꢀ  
MaintainꢀClockꢀSuspendꢀ  
ExitꢀPower-Downꢀ  
ExitꢀSelfꢀRefreshꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Hꢀ  
Hꢀ  
Hꢀ  
L
L
SelfꢀRefreshꢀ  
Xꢀ  
ClockꢀSuspendꢀ  
Power-Down(5)  
SelfꢀRefresh(6)ꢀ  
Clock Suspend(7)ꢀ  
AllꢀBanksꢀIdleꢀ  
AllꢀBanksꢀIdleꢀ  
ReadingꢀorꢀWritingꢀ  
Xꢀ  
L
COMMANDꢀINHIBITꢀorꢀNOPꢀ  
COMMANDꢀINHIBITꢀorꢀNOPꢀ  
Xꢀ  
H
H
H
L
ExitꢀClockꢀSuspendꢀ  
Power-DownꢀEntryꢀ  
SelfꢀRefreshꢀEntryꢀ  
ClockꢀSuspendꢀEntryꢀ  
COMMANDꢀINHIBITꢀorꢀNOPꢀ  
AUTOꢀREFRESHꢀ  
VALIDꢀ  
L
L
See TRUTH TABLE – CURRENT STATE BANK n, COMMAND TO BANK n  
H
H
NOTES:  
1.ꢀ CKEnꢀisꢀtheꢀlogicꢀstateꢀofꢀCKEꢀatꢀclockꢀedgeꢀn;ꢀCKEn-1 wasꢀtheꢀstateꢀofꢀCKEꢀatꢀtheꢀpreviousꢀclockꢀedge.ꢀ  
2.ꢀ CurrentꢀstateꢀisꢀtheꢀstateꢀofꢀtheꢀSDRAMꢀimmediatelyꢀpriorꢀtoꢀclockꢀedgeꢀn.  
3.ꢀ COMMANDnꢀisꢀtheꢀcommandꢀregisteredꢀatꢀclockꢀedgeꢀn,ꢀandꢀACTONnꢀisꢀaꢀresultꢀofꢀCOMMANDn.  
4. All states and sequences not shown are illegal or reserved.  
5.ꢀ Exitingꢀpower-downꢀatꢀclockꢀedgeꢀn will put the device in the all banks idle state in time for clock edge n+1 (provided that tc k s is  
met)  
.
6.ꢀ Exitingꢀselfꢀrefreshꢀatꢀclockꢀedgeꢀn will put the device in all banks idle state once tx s r ꢀisꢀmet.ꢀCOMMANDꢀINHIBITꢀorꢀNOPꢀ  
commands should be issued on clock edges occurring during the tx s r ꢀperiod.ꢀAꢀminimumꢀofꢀtwoꢀNOPꢀcommandsꢀmustꢀbeꢀsentꢀ  
during tx s r period.  
7.ꢀ Afterꢀexitingꢀclockꢀsuspendꢀatꢀclockꢀedgeꢀn,ꢀtheꢀdeviceꢀwillꢀresumeꢀoperationꢀandꢀrecognizeꢀtheꢀnextꢀcommandꢀatꢀclockꢀedgeꢀ  
n+1.  
TRUTH TABLE – CURRENT STATE BANK n, COMMAND TO BANK n (1-6)  
CURRENTꢀSTATE  
COMMANDꢀ(ACTION)  
CS RAS CAS WE  
Anyꢀ  
COMMANDꢀINHIBITꢀ(NOP/Continueꢀpreviousꢀoperation)  
Hꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Xꢀ  
Hꢀ  
Lꢀ  
Xꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
X
H
H
H
L
NOꢀOPERATIONꢀ(NOP/Continueꢀpreviousꢀoperation)  
ACTIVEꢀ(Selectꢀandꢀactivateꢀrow)ꢀ  
ꢀAUTOꢀREFRESH(7)ꢀ  
Idleꢀ  
Lꢀ  
LOADꢀMODEꢀREGISTER(7)ꢀ  
PRECHARGE(11)  
Lꢀ  
Lꢀ  
Lꢀ  
Hꢀ  
Lꢀ  
L
RowꢀActiveꢀ  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀREADꢀburst)(10)  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀWRITEꢀburst)(10)  
PRECHARGEꢀ(Deactivateꢀrowꢀinꢀbankꢀorꢀbanks)(8)  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀnewꢀREADꢀburst)(10)  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀWRITEꢀburst)(10)  
PRECHARGEꢀ(TruncateꢀREADꢀburst,ꢀstartꢀPRECHARGE)(8)  
BURSTꢀTERMINATE(9)  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀREADꢀburst)(10)  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀnewꢀWRITEꢀburst)(10)  
PRECHARGEꢀ(TruncateꢀWRITEꢀburst,ꢀstartꢀPRECHARGE)(8)  
BURSTꢀTERMINATE(9)ꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
H
L
Lꢀ  
Hꢀ  
Lꢀ  
L
Readꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
H
L
(Autoꢀ  
Lꢀ  
Prechargeꢀ  
Disabled)ꢀ  
Writeꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
L
Hꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
L
H
L
(Autoꢀ  
Lꢀ  
Prechargeꢀ  
Hꢀ  
Hꢀ  
L
Disabled)ꢀ  
Hꢀ  
L
NOTE:  
ꢀ 1.ꢀThisꢀtableꢀappliesꢀwhenꢀCKEꢀn-1ꢀwasꢀHIGHꢀandꢀCKEꢀnꢀisꢀHIGHꢀ(seeꢀTruthꢀTableꢀ-ꢀCKE)ꢀandꢀafterꢀtx s r has been met (if the  
previous state was SELFꢀREFRESH).  
ꢀ 2.ꢀThisꢀtableꢀisꢀbank-specific,ꢀexceptꢀwhereꢀnoted;ꢀi.e.,ꢀtheꢀcurrentꢀstateꢀisꢀforꢀaꢀspecificꢀbankꢀandꢀtheꢀcommandsꢀshownꢀareꢀthoseꢀ  
allowedꢀtoꢀbeꢀissuedꢀtoꢀthatꢀbankꢀwhenꢀinꢀthatꢀstate.ꢀExceptionsꢀareꢀcoveredꢀinꢀtheꢀnotesꢀbelow.  
Integrated Silicon Solution, Inc. — www.issi.comꢀ  
7
Rev. A  
03/19/08