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ADVance informaTION
TMS470R1A64
16/32-bitriscflashmicrocontroller
SPNS099–NOVEMBER2004
table2.terminalfunctions(持续)
终端
内部的
类型
(1)(2)
pullup/描述
NAMEPIN
PULLDOWN
(3)
号码
3.3-v
AD
REFHI
65mibadcmodulehigh-voltagereferenceinput
REFI
地
AD
REFLO
66mibadcmodulelow-voltagereferenceinput
REFI
3.3-v
V
CCAD
67MibADCanalogsupplyvoltage
PWR
V
SSAD
68GNDMibADCanaloggroundreference
serialperipheralinterface1(spi1)
spi1clk5spi1clock.spi1clkcanbeprogrammedasagiopin.
spi1ena1spi1chipenable.spi1enacanbeprogrammedasagiopin.
spi1scs2spi1slavechipselect.spi1scscanbeprogrammedasagiopin.
3.3-vi/oipd
spi1simo3spi1datastream.slavein/masterout.spi1simocanbeprogrammedasa
giopin.
spi1somi4spi1datastream.slaveout/masterin.spi1somicanbeprogrammedasa
giopin.
serialperipheralinterface2(spi2)
spi2clk33spi2clock.spi2clkcanbeprogrammedasagiopin.
spi2ena36spi2chipenable.spi2enacanbeprogrammedasagiopin.
spi2simo34spi2datastream.slavein/masterout.spi2simocanbeprogrammedasa
3.3-vi/oipd
giopin.
spi2somi35spi2datastream.slaveout/masterin.spi2somicanbeprogrammedasa
giopin.
零-pinphase-lockedloop(zpll)
oscin81.8-vicrystalconnectionpinorexternalclockinput
oscout71.8-voexternalcrystalconnectionpin
plldis41enable/disablethezpll.thezpllcanbebypassedandtheoscillator
becomesthesystemclock.ifnotinbypassmode,tirecommendsthat
3.3-viipd
PLLDISbeconnectedtogroundorpulleddowntogroundbyanexternal
电阻.
serialcommunicationsinterface1(sci1)
sci1clk513.3-vi/oipdsci1clock.sci1clkcanbeprogrammedasagiopin.
sci1rx533.3-vi/oipusci1datareceive.sci1rxcanbeprogrammedasagiopin.
sci1tx523.3-vi/oipusci1datatransmit.sci1txcanbeprogrammedasagiopin.
serialcommunicationsinterface2(sci2)
sci2rx253.3-vi/oipusci2datareceive.sci2rxcanbeprogrammedasagiopin.
sci2tx263.3-vi/oipusci2datatransmit.sci2txcanbeprogrammedasagiopin.
systemmodule(sys)
clkoutbidirectionalpin.clkoutcanbeprogrammedasagiopinortheoutputof
483.3-vi/oipd
sysclk,iclk,ormclk.
porrstinputmasterchippower-upreset.externalv
CC
monitorcircuitrymustasserta
163.3-viipd
电源-onreset.
rstbidirectionalreset.theinternalcircuitrycanassertareset,andanexternal
systemresetcanassertadevicereset.
103.3-vi/oipu
onrst,theoutputbufferisimplementedasanopendrain(driveslowonly.
toensureanexternalresetisnotarbitrarilygenerated,tirecommendsthat
anexternalpullupresistorbeconnectedtorst.
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