DS3231Mcn中文资料

DS3231M±5ppmI2C_________________________________________________________________MaximIntegratedProducts__119-5312;Rev0;6/10+表示无铅(Pb)/符合RoHS标准的封装。*未来产品—供货状况请与工厂联系。 DS3231M是低成本、高精度I2C实时时钟(RTC)。该器件包含电池输入端，断开主电源时仍可保持精确计时。集成微机电系统(MEMS)提高了器件的长期精确度，并减少了生产线的元件数量。DS3231M采用与流行的DS3231 RTC相同的器件封装。RTC保存秒、分、时、星期、日期、月和年信息。少于31天的月份，将自动调整月末的日期，包括闰年修正。时钟格式可以是24小时或带AM/PM指示的12小时格式。提供两个可设置的日历闹钟和一个1Hz输出。地址与数据通过I2C双向总线串行传输。精密的、经过温度补偿的电压基准和比较器电路用来监视VCC状态，检测电源故障，提供复位输出，并在必要时自动切换到备份电源。另外，RST监测引脚可以作为产生微处理器复位的按键输入，详细信息请参考方框图。 电表工业应用 S -40°C+85°C±5ppm (±0.432/) S S S DS3231 S 2100S S 1Hz32.768kHz S S (400kHz) I2C S +2.3V+5.5V S ±3°C S -40°C+85°C S 16SO (300mil) S (UL) 本文是英文数据资料的译文，文中可能存在翻译上的不准确或错误。如需进一步确认，请在您的设计中参考英文资料。Maxim10800 852 1249 ()10800 152 1249 ()Maximchina.maxim-ic.comDS3231MSCLSDA32KHZVBATINT/SQWRST+3.3V+3.3VCPUI/OPORTINTERRUPTS该器件某些版本的规格可能与发布的规格不同，会以勘误表的形式给出。通过不同销售渠道可能同时获得器件的多个版本。欲了解器件勘误表信息，请点击：china.maxim-ic.com/errata。PARTTEMP_RANGEPIN-PACKAGEDS3231MZ+*-40NCto+85NC8SODS3231M+-40NCto+85NC16SODS3231M±5ppmI2C2Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.VoltageRangeonAnyPinRelativetoGND........-0.3Vto+6.0VOperatingTemperatureRange..........................-40NCto+85NCStorageTemperatureRange............................-55NCto+125NCLeadTemperature(soldering,10s)................................+260NCSolderingTemperature(reflow)......................................+260NCRECOMMENDED_OPERATING_CONDITIONS(TA=-40NCto+85NC,unlessotherwisenoted.)(Note1)ELECTRICAL_CHARACTERISTICS—FREQUENCY_AND_TIMEKEEPING(VCCorVBAT=+3.3V,TA=-40NCto+85NC,unlessotherwisenoted.TypicalvaluesareatVCC=+3.3V,VBAT=+3.0V,andTA=+25NC,unlessotherwisenoted.)DC_ELECTRICAL_CHARACTERISTICS—GENERAL(VCC=+2.3Vto+5.5V,TA=-40NCto+85NC,unlessotherwisenoted.TypicalvaluesareatVCC=+3.3V,VBAT=+3.0V,andTA=+25NC,unlessotherwisenoted.)ABSOLUTE_MAXIMUM_RATINGSPARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSupplyVoltageVCC2.33.35.5VVBAT2.33.05.5Logic1VIH0.7xVCCVCC+0.3VLogic0VIL-0.30.3xVCCVPARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS1HzFrequencyToleranceDf/fOUTMeasuredoverR10sintervalQ5ppm1HzFrequencyStabilityvs.VCCVoltageDf/VQ1ppm/VTimekeepingAccuracytKAQ0.432Seconds/Day32kHzFrequencyToleranceDf/fOUTQ2.5%PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSActiveSupplyCurrent(I2CActive:IncludesTemperatureConversionCurrent)ICCAVCC=+3.63V200µAVCC=VCCMAX300StandbySupplyCurrent(I2CInactive:IncludesTemperatureConversionCurrent)ICCSVCC=+3.63V130µAVCC=VCCMAX200TemperatureConversionCurrent(I2CInactive)ICCSCONVVCC=+3.63V575µAVCC=VCCMAX650DS3231M±5ppmI2C3AC_ELECTRICAL_CHARACTERISTICS—POWER_SWITCH(TA=-40NCto+85NC,unlessotherwisenoted.)(Figure2)DC_ELECTRICAL_CHARACTERISTICS—GENERAL_(continued)(VCC=+2.3Vto+5.5V,TA=-40NCto+85NC,unlessotherwisenoted.TypicalvaluesareatVCC=+3.3V,VBAT=+3.0V,andTA=+25NC,unlessotherwisenoted.)DC_ELECTRICAL_CHARACTERISTICS—VBAT_CURRENT_CONSUMPTION(VCC=0V,VBAT=+2.3Vto+5.5V,TA=-40NCto+85NC,unlessotherwisenoted.TypicalvaluesareatVCC=0V,VBAT=+3.0V,andTA=+25NC,unlessotherwisenoted.)PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSPower-FailVoltageVPF2.452.5752.70VLogic0Output(32KHZ,INT/SQW,SDA)VOLIOL=3mA0.4VLogic0Output(RST)VOLIOL=1mA0.4VOutputLeakage(32KHZ,INT/SQW,SDA)ILO-0.1+0.1µAInputLeakage(SCL)ILI-0.1+0.1µARSTI/OLeakageIOL-200+10µAVBATLeakageIBATLKG25100nATemperatureAccuracyTEMPACCVCCorVBAT=+3.3VQ3NCTemperatureConversionTimetCONV10msPushbuttonDebouncePBDB250msResetActiveTimetRST250msOscillatorStopFlag(OSF)DelaytOSF(Note2)125200msPARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSActiveBatteryCurrent(I2CActive)(Note3)IBATAVBAT=+3.63V70µAVBAT=VBATMAX150TimekeepingBatteryCurrent(I2CInactive)(Note3)IBATTVBAT=+3.63V,EN32KHZ=023.0µAVBAT=VBATMAX,EN32KHZ=023.5TemperatureConversionCurrent(I2CInactive)IBATTCVBAT=+3.63V575µAVBAT=VBATMAX650DataRetentionCurrent(OscillatorStoppedandI2CInactive)IBATDRTA=+25NC100nAPARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSVCCFallTime,VPFMAXtoVPFMINtVCCF300FsVCCRiseTime,VPFMINtoVPFMAXtVCCR0FsRecoveryatPower-UptREC(Note4)250300msDS3231M±5ppmI2C4AC_ELECTRICAL_CHARACTERISTICS—I2C_INTERFACE(VCCorVBAT=+2.3Vto+5.5V,TA=-40NCto+85NC,unlessotherwisenoted.TypicalvaluesareatVCC=+3.3V,VBAT=+3.0V,andTA=+25NC,unlessotherwisenoted.)(Note5,Figure1)Note_1:_Allvoltagesarereferencedtoground.Note_2:_TheparametertOSFistheperiodoftimetheoscillatormustbestoppedfortheOSFflagtobeset.Note_3:Includesthetemperatureconversioncurrent(averaged).Note_4:Thisdelayappliesonlyiftheoscillatorisenabled.IftheEOSCbitis1,tRECisbypassedandRSTimmediatelygoeshigh.ThestateofRSTdoesnotaffecttheI2CinterfaceorRTCfunctions.Note_5:__Interfacetimingshownisforfast-mode(400kHz)operation.Thisdeviceisalsobackward-compatiblewithstandardmodeI2Ctiming.Note_6:_CB:Totalcapacitanceofonebuslineinpicofarads.PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSCLClockFrequencyfS