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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  
(1-6)  
TRUTH TABLE – CURRENT STATE BANK n, COMMAND TO BANK m  
CURRENTꢀSTATE  
COMMANDꢀ(ACTION)  
CS RAS CAS WE  
Anyꢀ  
COMMANDꢀINHIBITꢀ(NOP/Continueꢀpreviousꢀoperation)ꢀ  
NOꢀOPERATIONꢀ(NOP/Continueꢀpreviousꢀoperation)ꢀ  
AnyꢀCommandꢀOtherwiseꢀAllowedꢀtoꢀBankꢀm  
ACTIVEꢀ(Selectꢀandꢀactivateꢀrow)ꢀ  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀREADꢀburst)(7)ꢀ  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀWRITEꢀburst)(7)ꢀ  
PRECHARGEꢀ  
Hꢀ  
Lꢀ  
Xꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Lꢀ  
Xꢀ  
Hꢀ  
Xꢀ  
Lꢀ  
Xꢀ  
Hꢀ  
Xꢀ  
Hꢀ  
Lꢀ  
X
H
X
H
H
L
Idleꢀ  
Rowꢀ  
Activating,ꢀ  
Active,ꢀorꢀ  
Prechargingꢀ  
Readꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
Lꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
L
ACTIVEꢀ(Selectꢀandꢀactivateꢀrow)ꢀ  
Lꢀ  
H
H
L
(Autoꢀ  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀnewꢀREADꢀburst)(7,10)  
Hꢀ  
Hꢀ  
Lꢀ  
Prechargeꢀ  
Disabled)ꢀ  
Writeꢀ  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀWRITEꢀburst)(7,11)  
PRECHARGE(9)ꢀ  
Lꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
L
ACTIVEꢀ(Selectꢀandꢀactivateꢀrow)ꢀ  
Lꢀ  
H
H
L
(Autoꢀ  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀREADꢀburst)(7,12)  
Hꢀ  
Hꢀ  
Lꢀ  
Prechargeꢀ  
Disabled)ꢀ  
Readꢀ  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀnewꢀWRITEꢀburst)(7,13)  
PRECHARGE(9)ꢀ  
Lꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
L
ACTIVEꢀ(Selectꢀandꢀactivateꢀrow)ꢀ  
Lꢀ  
H
H
L
(WithꢀAutoꢀ  
Precharge)ꢀ  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀnewꢀREADꢀburst)(7,8,14)  
Hꢀ  
Hꢀ  
Lꢀ  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀWRITEꢀburst)(7,8,15)  
PRECHARGE(9)ꢀ  
Lꢀ  
Hꢀ  
Hꢀ  
Lꢀ  
L
Writeꢀ  
ACTIVEꢀ(Selectꢀandꢀactivateꢀrow)ꢀ  
Lꢀ  
H
H
L
(WithꢀAutoꢀ  
Precharge)ꢀ  
READꢀ(SelectꢀcolumnꢀandꢀstartꢀREADꢀburst)(7,8,16)  
Hꢀ  
Hꢀ  
Lꢀ  
WRITEꢀ(SelectꢀcolumnꢀandꢀstartꢀnewꢀWRITEꢀburst)(7,8,17)  
PRECHARGE(9)ꢀ  
Lꢀ  
Hꢀ  
L
NOTE:ꢀ  
ꢀ 1.ꢀThisꢀtableꢀappliesꢀwhenꢀCKEꢀn-1ꢀwasꢀHIGHꢀandꢀCKEꢀnꢀisꢀHIGHꢀ(TruthꢀTableꢀ-ꢀCKE)ꢀandꢀafterꢀtx s r has been met (if the previ-  
ous state was self refresh).  
ꢀ 2.ꢀThisꢀtableꢀdescribesꢀalternateꢀbankꢀoperation,ꢀexceptꢀwhereꢀnoted;ꢀi.e.,ꢀtheꢀcurrentꢀstateꢀisꢀforꢀbankꢀn and the commands  
shown are those allowed to be issued to bank m (assuming that bank m is in such a state that the given command is allowable).ꢀExcep-  
tions are covered in the notes below.  
3. Current state definitions:  
Idle:ꢀTheꢀbankꢀhasꢀbeenꢀprecharged,ꢀandꢀtr p has been met.  
RowꢀActive:ꢀAꢀrowꢀinꢀtheꢀbankꢀhasꢀbeenꢀactivated,ꢀandꢀtr c D has been met. No data bursts/accesses and no register  
accesses are in progress.  
Read:ꢀAꢀREADꢀburstꢀhasꢀbeenꢀinitiated,ꢀwithꢀautoꢀprechargeꢀdisabled,ꢀandꢀhasꢀnotꢀyetꢀterminatedꢀorꢀbeenꢀtermi-  
nated.  
Write:ꢀAꢀWRITEꢀburstꢀhasꢀbeenꢀinitiated,ꢀwithꢀautoꢀprechargeꢀdisabled,ꢀandꢀhasꢀnotꢀyetꢀterminatedꢀorꢀbeenꢀtermi-  
nated.  
Readꢀw/Auto  
PrechargeꢀEnabled:ꢀStartsꢀwithꢀregistrationꢀofꢀaꢀREADꢀcommandꢀwithꢀautoꢀprechargeꢀenabled,ꢀandꢀendsꢀwhenꢀtr p has been  
met.ꢀOnceꢀtr p is met, the bank will be in the idle state.  
Write w/Auto  
PrechargeꢀEnabled:ꢀStartsꢀwithꢀregistrationꢀofꢀaꢀWRITEꢀcommandꢀwithꢀautoꢀprechargeꢀenabled,ꢀandꢀendsꢀwhenꢀtr p has been  
met.ꢀOnceꢀtr p is met, the bank will be in the idle state.  
ꢀ 4.ꢀAUTOꢀREFRESH,ꢀSELFꢀREFRESHꢀandꢀLOADꢀMODEꢀREGISTERꢀcommandsꢀmayꢀonlyꢀbeꢀissuedꢀwhenꢀallꢀbanksꢀareꢀidle.  
ꢀ 5.ꢀAꢀBURSTꢀTERMINATEꢀcommandꢀcannotꢀbeꢀissuedꢀtoꢀanotherꢀbank;ꢀitꢀappliesꢀtoꢀtheꢀbankꢀrepresentedꢀbyꢀtheꢀcurrentꢀstateꢀ  
only.  
6. All states and sequences not shown are illegal or reserved.  
ꢀ 7.ꢀREADsꢀorꢀWRITEsꢀtoꢀbankꢀmꢀlistedꢀinꢀtheꢀCommandꢀ(Action)ꢀcolumnꢀincludeꢀREADsꢀorꢀWRITEsꢀwithꢀautoꢀprechargeꢀenabledꢀ  
andꢀREADsꢀorꢀWRITEsꢀwithꢀautoꢀprechargeꢀdisabled.  
Integrated Silicon Solution, Inc. — www.issi.com  
9
Rev. A  
03/19/08