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IS45S16400J-5CTLA1 Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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IS45S16400J-5CTLA1 Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
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11 / 60 page  Integrated Silicon Solution, Inc. — www.issi.com 11 Rev. F 12/17/2013 IS42S16400J IS45S16400J 3. Current state definitions: Idle:Thebankhasbeenprecharged,andtrp has been met. RowActive:Arowinthebankhasbeenactivated,andtrcdhasbeenmet.Nodatabursts/accessesandnoregister accesses are in progress. Read:AREADbursthasbeeninitiated,withautoprechargedisabled,andhasnotyetterminatedorbeentermi- nated. Write:AWRITEbursthasbeeninitiated,withautoprechargedisabled,andhasnotyetterminatedorbeentermi- nated. 4.Thefollowingstatesmustnotbeinterruptedbyacommandissuedtothesamebank.COMMANDINHIBITorNOPcommands, or allowable commands to the other bank should be issued on any clock edge occurring during these states. Allowable com- mandstotheotherbankaredeterminedbyitscurrentstateandCURRENTSTATEBANKntruthtables. Precharging:StartswithregistrationofaPRECHARGEcommandandendswhentrpismet.Oncetrp is met, the bank will be in the idle state. RowActivating:StartswithregistrationofanACTIVEcommandandendswhentrcdismet.Oncetrcd is met, the bank will be in the row active state. Readw/Auto Precharge Enabled:StartswithregistrationofaREADcommandwithautoprechargeenabledandendswhentrp has been met.Oncetrp is met, the bank will be in the idle state. Writew/Auto Precharge Enabled:StartswithregistrationofaWRITEcommandwithautoprechargeenabledandendswhentrp has been met.Oncetrp is met, the bank will be in the idle state. 5.Thefollowingstatesmustnotbeinterruptedbyanyexecutablecommand;COMMANDINHIBITorNOPcommandsmustbe applied on each positive clock edge during these states. Refreshing:StartswithregistrationofanAUTOREFRESHcommandandendswhentrcismet.Oncetrc is met, the SDRAMwillbeintheallbanksidlestate. Accessing Mode Register:StartswithregistrationofaLOADMODEREGISTERcommandandendswhentmrdhasbeenmet.Once tmrdismet,theSDRAMwillbeintheallbanksidlestate. Precharging All:StartswithregistrationofaPRECHARGEALLcommandandendswhentrpismet.Oncetrp is met, all banks will be in the idle state. 6. All states and sequences not shown are illegal or reserved. 7.Notbank-specific;requiresthatallbanksareidle. 8. May or may not be bank-specific; if all banks are to be precharged, all must be in a valid state for precharging. 9.Notbank-specific;BURSTTERMINATEaffectsthemostrecentREADorWRITEburst,regardlessofbank. 10.READsorWRITEslistedintheCommand(Action)columnincludeREADsorWRITEswithautoprechargeenabledand READsorWRITEswithautoprechargedisabled. 11.DoesnotaffectthestateofthebankandactsasaNOPtothatbank. |
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