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IS42S16160D-6BI Datasheet(PDF) 6 Page - Integrated Silicon Solution, Inc

Part # IS42S16160D-6BI
Description  32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS42S16160D-6BI Datasheet(HTML) 6 Page - Integrated Silicon Solution, Inc

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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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