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IS42S16160-6TLI Datasheet(PDF) 5 Page - Integrated Silicon Solution, Inc |
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IS42S16160-6TLI Datasheet(HTML) 5 Page - Integrated Silicon Solution, Inc |
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5 / 60 page  IS42S16160 Integrated Silicon Solution, Inc. — www.issi.com 5 Rev. C 09/15/09 PIN FUNCTIONS Symbol Type Function (In Detail) A0-A12 InputPin AddressInputs:A0-A12aresampledduringtheACTIVEcommand(row-address A0-A12)andREAD/WRITEcommand(columnaddressA0-A8(x16);withA10defin- ingautoprecharge)toselectonelocationoutofthememoryarrayintherespective bank.A10issampledduringaPRECHARGEcommandtodetermineifallbanksare tobeprecharged(A10HIGH)orbankselectedbyBA0,BA1(LOW).Theaddress inputsalsoprovidetheop-codeduringaLOADMODEREGISTERcommand. 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 and cannot be written to the device. DQ0-DQ15 Input/Output DataontheDataBusislatchedonDQpinsduringWritecommands,andbufferedfor 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 PowerSupplyPin Vddq is the output buffer power supply. Vdd PowerSupplyPin Vdd is the device internal power supply. Vssq PowerSupplyPin Vssq is the output buffer ground. Vss PowerSupplyPin Vss is the device internal ground. |
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