芯片描述与单片机解密分析

em78612芯片解密是我们在ic解密研究中的一个典型解密实例，这里我们提供对em78612单片机的基本性能特征介绍，供参考借鉴。

usbspecificationcompliance

features

*universalserialbusspecificationversion1

*support1deviceaddressand2endpoints(ep0andep

*usbprotocolhandling

*usbdevicestatehandling

*identifiesanddecodesstandardusbcommandstoendpointzero

*built-inps/2portinterface

built-in8-bitriscmcu

*5levelstacksforsubroutineandinterrupt

*6availableinterrupts

*8-bitrealtimeclock/counter(tcc)withoverflowinterrupt

*built-inrcoscillatorfreerunningforwatchdogtimeranddualclockmode

*twoindependentprogrammableprescalersforwdtandtcc

*twomethodsofpowersaving:

-power-downmode(sleepmode)

-lowfrequencymode.

*twoclocksperinstructioncycle

i/oports

*upto12generalpurposesi/opinsgroupedintotwoports(port6and.

*upto2ledsinkpins

*eachgpiopinofports6&port7hasaninternalprogrammablepull-highresistor

*eachgpiopinofports6hasaninternalprogrammablepull-lowresistor

*eachgpiopinwakesupthemcufromsleepmodebyinputstatechange

internalmemory

*built-in28*13bitsmaskrom

*built-in80bytesgeneralpurposeregisters(sram)

*built-inusbapplicationfifos.

operationfrequency

*normalmode:mcurunsontheexternaloscillatorfrequency

*dualclockmode:mcurunsatthefrequencyof256khz(or32khz,4khz,500hz),

emittedbytheinternaloscillatorwiththeexternalceramicresonatorturnedofftosavepower.

built-in3vvoltageregulator

*formcupowersupply

*pull-upsourcefortheexternalusbresistorond-pin.

packagetype

*16pinpdip(300mil)/sop(150mil)(em78612ap/am)

*18pinpdip(300mil)/sop(300mil)(em78612bp/bm)

*20pinpdip(300mil)/sop(300mil)(em78612cp/cm)

*20pinssop(150mil)(em78612gm)

芯片解密中心能在短时间内完成em78612芯片解密等疑难型单片机解密服务。如果您有em78612单片机解密或其他芯片解密需求，欢迎来电来访咨询洽谈。

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