单片机产品破解与烧录特性

采用四面48脚封装。ata5428是一款包含了射频功能和逻辑控制功能的集成电路。可以工作于435mhz~435mhz。ata5428具有低功耗和高集成度，传输的距离远，接收的灵敏度高等优点，其内部集成压控振荡器、锁相环电路、功率放大电路、解调电路、变频器、中放电路等。由于高度的集成化使复杂无线电路大大简化，以往较难处理的射频部分，被简化到只需在ic外围加上几个免调试的分立元件。

features

ata5428内部含有自动定时接收唤醒数字逻辑控制电路，可以设定唤醒的周期，选择这个功能后仅仅增加一些收发延迟，但会成倍的降低接收功耗。

·multichannelhalf-duplextransceiverwithapproximately±5mhzprogrammabletuningrange

·highasksensitivity:–115dbmatkbit/s/–115dbmat4kbit/s(4392mhz)

·datarate:1to20kbit/smanchesterfsk,1tokbit/smanchesterask

·ask/fskreceiverusesalow-ifarchitecturewithhighselectivity,blocking,andlowintermodulation(typicalblocking55dbat±750khz/61dbat±5mhzand70dbat±mhz,systemi1dbcp=–30dbm/systemiip3=–20dbm)

·226khz/237khziffrequencywith30dbimagerejectionand170khzusableifbandwidth

·tolerancesofxtalcompensatedbyfractional-nsynthesizerwith800hzrfresolution

·integratedrx/tx-switch,single-endedrfinputandoutput

·rssi(receivedsignalstrengthindicator)

·communicationtomicrocontrollerwithspiinterfaceworkingatmaximum500kbit/s

·configurableselfpollingandrx/txprotocolhandlingwithfifo-rambufferingofreceivedandtransmitteddata

·5pushbuttoninputsandonewake-upinputareactiveinpower-downmode

·integratedxtalcapacitors

·paefficiency:upto38%(4392mhz/dbm/3v)

·lowin-bandsensitivitychangeoftypically±8dbwithin±58khzcenterfrequencychangeinthecompletetemperatureandsupplyvoltagerange

·supplyvoltageswitch,supplyvoltageregulator,resetgeneration,clock/interruptgenerationandlowbatteryindicatorformicrocontroller

·fullyintegratedpllwithlowphasenoisevco,pllloopfilterandfullsupportofmulti-channeloperationwitharbitrarychanneldistanceduetofractional-nsynthesizer

·sophisticatedthresholdcontrolandquasi-peakdetectorcircuitinthedataslicer

·powermanagementviadifferentoperationmodes

·315mhz,345mhz,4392mhz,863mhzand915mhzwithoutexternalvcoandpllcomponents

·inductivesupplywithvoltageregulatorifbatteryisempty(auxmode)

·efficientxtostart-upcircuit(>–5kΩworstcaserealstart-upimpedance)

·changingofmodulationtypeask/fskanddataratewithoutcomponentchanges

·minimalexternalcircuitryrequirementsforcompletesystemsolution

·adjustableoutputpower:0todbmadjustedandstabilizedwithexternalresistor

·esdprotectionatallpins(5kvhbm,200vmm,1kvfcdm)

·supplyvoltagerange:4vto6vor4vto6v

·temperaturerange:–40°cto+85°c

·small7×7mmqfn48package

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