HighperformanceCoreEnhanced8051CPUSinglecycleinstructionSupport16-bitextendedinstructionMaximumfrequency@80MHzInside8KOTPand4KSRAMSupport16interruptsourceSupport4levelprogrammableinterruptpriorityFlexibleI/O25GPIOpinsAllGPIOpinscanbeprogrammableasinputoroutputindividuallyAllGPIOpinsareinternalpull-up/pull-downselectableindividuallyCMOS/TTLlevelSchmitttriggeredinputSupportIOwakeup/interruptDigitalPeripheralFeatureOneaudiosamplerateconverterOneIIScontroller,supportsinglestereochannelOnefull-duplexbasicUARTwithoutDMAOnetran***itonlyUARTwithDMAOneIICinterfacesupportshostanddevicemodeOne8-bitTIMERTwo16-bitmulti-functionTIMERs,supportcaptureandPWMmodeOnecomparatorcontroller,supportHallsensorsimulationWatchdogAnalogPeripheralFeaturesRC，internalRCOscillator,~6.5MHzHTC,internallowTemperaturedriftRCOscillator,~5MHz10-bithigh-precision16-channelADC(mainlyasADCKey,etc)12-bithigh-precisionADC(mainlyasarecording)16-bithigh-precisionDACFullSpeedUSBPHYAcaplessXOSC,clockoscillationcircuit,support12MHz/24MHzLVD,supportpower-downprotectionLDO，5V-3.3V、5V-3.0V、5V-1.7VMICamplifiercircuit3-channelRail-to-RailCOMPARATORGeneralIO,supportpull-up/pull-down,strong/weakoutput,Input,highresistanceetc)