芯片解密

c81f931supplyvoltage:0.9to6v

-built-indc-dcconverterwith8–3voutput(65mwmax)foruseinone-cellmode;cansupplyexternaldevices

-one-cellmodesupports0.9–8voperation

-typicalsleepmodecurrent<0.1μa;retainsstateandramcontentsoverfullsupplyrange;fastwakeup

-bitanalogtodigitalconverter

-upto15externalinputs

-externalpinorinternalvref(noexternalcapacitorrequired)

-built-intemperaturesensor

-autonomousburstmodewith16-bitautomaticaveraging

accumulator

twocomparators

-programmablehysteresisandresponsetime

-configurableasinterruptorresetsource

-lowcurrent(<0.5μa)

-upto15capacitivetouchsenseinputs

memory

-4352bytesinternaldataram(256+4k)

-64kbbytesflash;in-systemprogrammablein14-byte

sectors;fullread/write/erasefunctionalityovertheentire

supplyrange

on-chipdebug

-on-chipdebugcircuitryfacilitatesfullspeed,non-intrusivein-systemdebug(noemulatorrequired)

high-speed81μccore

-pipe-linedinstructionarchitecture;executes70%ofinstructionsin1or2systemclocks

-25mipspeakthroughputwith25mhzclock

-expandedinterrupthandler

digitalperipherals

-16porti/o;all5vtolerantwithprogrammabledrivestrength

-hardwareenhanceduart,spiandsmbus™serialportsavailableconcurrently

-lowpower32-bitsmartclock(0.5ua)operatesdownto0.9v

-fourgeneralpurpose16-bitcounter/timers

-16-bitprogrammablecounterarray(pca)withsixcapture/comparemodulesandwatchdogtimer:

•8,9,,11,or16-bitpwm

•rising/fallingedgecapture

•frequencyoutput

•softwaretimer

clocksources

-precisioninternaloscillators:25mhzwith±2%accuracysupportsuartoperation;spread-spectrummodeforreducedemi

-lowpowerinternaloscillator:20mhz

-externaloscillator:crystal,rc,c,cmosclock

-smartclockoscillator:3768khzcrystalorself-oscillate

-canswitchbetweenclocksourceson-the-fly;usefulinpowersavingmodes

ultra-smallpackage

-24-pinqfn(4x4mm)

temperaturerange:–40to+85°c

以上是关于c81f931芯片的主要性能特征介绍，我们提供给广大客户及其他各类技术工程师参考借鉴

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