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IS45S16160D-7TLA2 Datasheet(PDF) 6 Page - Integrated Silicon Solution, Inc |
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IS45S16160D-7TLA2 Datasheet(HTML) 6 Page - Integrated Silicon Solution, Inc |
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6 / 63 page  6 Integrated Silicon Solution, Inc. — www.issi.com Rev. B 06/11/09 IS42S83200D, IS42S16160D IS45S83200D, IS45S16160D PIN FUNCTIONS Symbol Type Function (In Detail) A0-A12 InputPin AddressInputs:A0-A12aresampledduringtheACTIVEcommand(row-address A0-A12)andREAD/WRITEcommand(columnaddressA0-A9(x8),orA0-A8(x16); withA10definingautoprecharge)toselectonelocationoutofthememoryarrayin therespectivebank.A10issampledduringaPRECHARGEcommandtodetermine ifallbanksaretobeprecharged(A10HIGH)orbankselectedbyBA0,BA1(LOW). Theaddressinputsalsoprovidetheop-codeduringaLOADMODEREGISTER command. BA0,BA1 InputPin BankSelectAddress:BA0andBA1defineswhichbanktheACTIVE,READ,WRITE orPRECHARGEcommandisbeingapplied. CAS InputPin CAS , in conjunction with the RAS and WE, forms the device command. See the "CommandTruthTable"fordetailsondevicecommands. CKE InputPin TheCKEinputdetermineswhethertheCLKinputisenabled.Thenextrisingedge oftheCLKsignalwillbevalidwhenisCKEHIGHandinvalidwhenLOW.WhenCKE isLOW,thedevicewillbeineitherpower-downmode,clocksuspendmode,orself refresh mode. CKEisan asynchronous input. CLK InputPin CLKisthemasterclockinputforthisdevice.ExceptforCKE,allinputstothisdevice areacquiredinsynchronizationwiththerisingedgeofthispin. CS InputPin TheCS input determines whether command input is enabled within the device. Command input is enabled when CSisLOW,anddisabledwithCSisHIGH.The device remains in the previous state when CSisHIGH. DQML, InputPin DQMLandDQMHcontrolthelowerandupperbytesoftheI/Obuffers.Inread DQMH mode,DQMLandDQMHcontroltheoutputbuffer.WhenDQMLorDQMHisLOW,the correspondingbufferbyteisenabled,andwhenHIGH,disabled.Theoutputsgoto theHIGHimpedancestatewhenDQML/DQMHisHIGH.Thisfunctioncorrespondsto OE inconventionalDRAMs.Inwritemode,DQMLandDQMHcontroltheinputbuffer. WhenDQMLorDQMHisLOW,thecorrespondingbufferbyteisenabled,anddata canbewrittentothedevice.WhenDQMLorDQMHisHIGH,inputdataismasked andcannotbewrittentothedevice.ForIS42S16160Donly. DQM InputPin ForIS42S83200Donly. DQ0-DQ7 or Input/Output DataontheDataBusislatchedonDQpinsduringWritecommands,andbufferedfor DQ0-DQ15 outputafterReadcommands. RAS InputPin RAS , in conjunction with CAS and WE, forms the device command. See the "Com- mandTruthTable"itemfordetailsondevicecommands. WE InputPin WE , in conjunction with RAS and CAS, forms the device command. See the "Com- mandTruthTable"itemfordetailsondevicecommands. Vddq PowerSupplyPinVddq is the output buffer power supply. Vdd PowerSupplyPinVdd is the device internal power supply. Vssq PowerSupplyPinVssq is the output buffer ground. Vss PowerSupplyPinVss is the device internal ground. |
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