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IS4346R86400D Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers |
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IS4346R86400D Datasheet(HTML) 10 Page - List of Unclassifed Manufacturers |
10 / 33 page 10 Integrated Silicon Solution, Inc. Rev. C 11/20/2012 IS43/46R86400D IS43/46R16320D, IS43/46R32160D COMMANDS TRUTH TABLES Allcommands(addressandcontrolsignals)areregisteredonthepositiveedgeofclock(crossingofCKgoinghigh andCKgoinglow).TruthTableshowsbasictimingparametersforallcommands. NAME (FUNCTION) CS RAS CAS WE BA AP Address Notes DESELECT(NOP) H X X X X X X 2 NOOPERATION(NOP) L H H H X X X 2 ACTIVE(selectbankandactivaterow) L L H H Valid X Row READ(selectbankandcolumnandstartread burst) L H L H Valid L Column READwithAP(readburstwithAutoPrecharge) L H L H Valid H Column 3 WRITE(selectbankandcolumnandstartwrite burst) L H L L Valid L Column WRITEwithAP(writeburstwithAuto Precharge) L H L L Valid H Column 3 BURSTTERMINATE L H H L X X X 4 PRECHARGE(deactivaterowinselected bank) L L H L Valid L X 5 PRECHARGEALL(deactivaterowsinall banks) L L H L X H X 5 AUTOREFRESHorenterSELFREFRESH L L L H X X X 6,7,8 MODEREGISTERSET L L L L Valid Op-code 9 Notes: 1. All states and sequences not shown are illegal or reserved. 2. DESELECTandNOParefunctionallyinterchangeable. 3. Autoprechargeisnon-persistent.APHighenablesAutoPrecharge,whileAPLowdisablesAutoprecharge. 4. BurstTerminateappliestoonlyReadburstswithAutoPrechargedisabled.Thiscommandisundefinedandshouldnotbe usedforReadwithAutoPrechargeenabled,andforWritebursts. 5. IfAPisLow,bankaddressdetermineswhichbankistobeprecharged.IfAPisHigh,allbanksareprechargedandBA0- BA1aredon’tcare. 6. ThiscommandisAUTOREFRESHifCKEisHigh,andSELFREFRESHifCKEislow. 7. AlladdressinputsandI/Oare‘don'tcare’exceptforCKE.Internalrefreshcounterscontrolbankandrowaddressing. 8. AllbanksmustbeprechargedbeforeissuinganAUTO-REFRESHorSELFREFRESHcommand. 9. BA0andBA1valueselectbetweenMRSandEMRS. 10.CKEisHIGHforallcommandsshownexceptSELFREFRESH. TRUTH TABLE - DM Operations FUNCTION DM DQ WriteEnable L Valid Write Inhibit H X Note:Usedtomaskwritedata,providedcoincidentwiththe corresponding data. TRUTH TABLE - COMMANDS x32 x16 x8 AutoPrecharge(AP) A8 A10 A10 RowAddress(RA) A0-A12 A0-A12 A0-A12 ColumnAddress(CA) A0-A7, A9 A0-A9 A0-A9, A11 ADDRESSING |
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