35
TSPC750A/740A
2128A–HIREL–01/02
Thedatabusinputreceiversarenormallyturnedoffwhennoreadoperationisin
progressanddonotrequirepull-upresistorsonthedatabus.Otherdatabusreceivers
inthesystem,however,mayrequirepull-ups,orthatthosesignalsbeotherwisedriven
bythesystemduringinactiveperiods.ThedatabussignalsareDH[0-31],DL[0-31],
DP[0-7].
Ifaddressordataparityisnotusedbythesystem,andtherespectiveparitycheckingis
disabledthroughHID0,theinputreceiversforthosepinsaredisabled,andthosepins
donotrequirepull-upresistorsandshouldbeleftunconnectedbythesystem.Ifallpar-
itygenerationisdisabledthroughHID0,thenallparitycheckingshouldalsobedisabled
throughHID0,andallparitypinsmaybeleftunconnectedbythesystem.
Nopull-upresistorsarenormallyrequiredfortheL2interface.
Definitions
LifeSupport
Applications
Theseproductsarenotdesignedforuseinlifesupportappliances,devices,orsystems
wheremalfunctionoftheseproductscanreasonablybeexpectedtoresultinpersonal
injury.ATMEL-Grenoblecustomersusingorsellingtheseproductsforuseinsuchappli-
cationsdosoattheirownriskandagreetofullyindemnifyATMEL-Grenobleforany
damagesresultingfromsuchimproperuseorsale.
Datasheetstatus
Validity
Objectivespecification
Thisdatasheetcontainstargetandgoalspecificationfor
discussionwithcustomerandapplicationvalidation.
Beforedesignphase.
Targetspecification
Thisdatasheetcontainstargetorgoalspecificationfor
productdevelopment.
Validduringthedesignphase.
Preliminaryspecification
∝
site
Thisdatasheetcontainspreliminarydata.Additionaldata
maybepublishedlater;couldincludesimulationresult.
Validbeforecharacterization
phase.
Preliminaryspecification
β
site
Thisdatasheetcontainsalsocharacterizationresults.
Validbeforethe
industrializationphase.
Productspecification
Thisdatasheetcontainsfinalproductspecification.
Validforproductionpurpose.
Limitingvalues
LimitingvaluesgivenareinaccordancewiththeAbsoluteMaximumRatingSystem(IEC134).Stressaboveoneormoreofthe
limitingvaluesmaycausepermanentdamagetothedevice.Thesearestressratingsonlyandoperationofthedeviceattheseorat
anyotherconditionsabovethosegivenintheCharacteristicssectionsofthespecificationisnotimplied.Exposuretolimitingvalues
forextendedperiodsmayaffectdevicereliability.
Applicationinformation
Whereapplicationinformationisgiven,itisadvisoryanddoesnotformpartofthespecification.