alllibraryeleme
tstovalidateeachcellIfthe
ewNASAdesig
usesapartiallyori
sufficie
tlycharacterizedportio
ofthedesig
libraryfulltesti
gmightberequiredOfcourseifpartof
ftheHBDwasrelyi
go
i
here
tradiatio
hard
essofaprocesssomeofthetestslikeSELi
theearlierexamplemaybewaivedOtherco
sideratio
si
cludespeedofoperatio
a
doperati
gvoltageForexampleifthetestchipwastestedstaticallyforSEEatapowersupplyvoltageof33Visthedataapplicabletoa100MHzoperati
gfreque
cyat25VDy
amicco
sideratio
sie
o
staticoperatio
i
cludethepropagatedeffectsofSi
gleEve
tTra
sie
tsSETsTheseca
beagreaterco
cer
athigherfreque
ciesThepoi
toftheco
sideratio
sisthatthedesig
librarymustbek
ow
thecoverageusedduri
gtesti
gisk
ow
thetestapplicatio
mustbethoroughlyu
derstooda
dthecharacteristicsofthefou
drymustbek
ow
Ifalltheseareapplicableorhavebee
validatedbythetestchipthe
otesti
gmaybe
ecessaryAtaskwithi
NASA’sElectro
icPartsa
dPackagi
gNEPPProgramwasperformedtoexplorethesetypesofco
sideratio
sIIIHBDTECHNOLOGYEVALUATIONUSINGTHE8051MICROCONTROLLERWiththeiri
creasi
gcapabilitiesa
dlowerpowerco
sumptio
microco
trollersarei
creasi
glybei
gusedi
NASAa
dDODsystemdesig
sThereareexisti
gNASAa
dDoDprogramsthataredoi
gtech
ologydevelopme
ttoprovideHBDMicroco
trollersareo
esuchvehiclethatisbei
gi
vestigatedtoqua
tifytheradiatio
hard
essimproveme
tExamplesoftheseprogramsarethe8051microco
trollerbei
gdevelopedbyMissio
ResearchCorporatio
MRCa
dtheIAEthefocusofthisstudyAstheseHBDtech
ologiesbecomeavailablevalidatio
ofthetech
ologyi
the
aturalspaceradiatio
e
viro
me
tforNASA’susei
spaceflightsystemsisrequiredThe8051microco
trollerisa
i
dustrysta
dardarchitecturethathasbroadaccepta
cewidera
gi
gapplicatio
sa
ddevelopme
ttoolsavailableThereare
umerouscommercialve
dorsthatsupplythisco
trollerorhaveiti
tegratedi
tosometypeofsystemo
achipstructureBothMRCa
dIAEchosethisdevicetodemo
stratetwodisti
ctlydiffere
ttech
ologiesforharde
i
gTheMRCexampleofthisistousetemporallatchesthatrequirespecifictimi
gtoe
surethatsi
gleeve
teffectsaremi
imizedTheIAEtech
ologyusesultralowpowera
dlayouta
darchitectureHBDdesig
rulestoachievetheirresultsThesearefu
dame
tallydiffere
ttha
theapproachbyAeroflexU
itedTech
ologiesMicroelectro
icsCe
terUTMCthecommercialve
dorofaradiatio
harde
ed8051thatbuilttheir8051microco
trollerusi
gradiatio
harde
edprocessesThisbroadra
geoftech
ologywithi
o
edevicestructuremakesthe8051a
idealvehicleforperformi
gthistech
ologyevaluatio
Theobjectiveofthisworkisthetech
ologyevaluatio
oftheCULPRiTr