标签: maixm

池充电电路的一套安全温度限制。单节锂离子（锂离子）电池充电器可从USB端口或外部电源供电。Maxim/Dallas>AppNotes>AUTOMOTIVEKeywords:batterycharger,thermalprotection,Li+,lithiumion,safety,settemperaturelimits,thermistor,Oct01,2003dualcomparator,windowcomparator,batterychargingAPPLICATIONNOTE2769DualComparatorThermallyProtectsLi+BatteryAdualcomparatorandthermistorsetsafetemperaturelimitsforalithium-ionbatterychargingcircuit.Thesingle-celllithium-ion(Li+)batterychargercanbepoweredfromaUSBportorexternalsupply.MostmanufacturersrecommendthatLi+(lithium-ion)batteriesnotbechargedbelow0°Corabove+50°C.Youcanmonitorbothoftheselimitsbyaddingathermistoranddual(window)comparatortoaLi+batterycharger(Figure1).Figure1.ThislithiumbatterychargerderivesitspowerfromfromaUSB……

摘要：本应用笔记介绍了如何使用内置的实用工具光盘的MAXQ7665微控制器（μC）的程序和数据闪存擦除/写。此信息适用于那些（MAXQ7665）基于闪存的页擦除（PE）闪存μCs。Maxim>AppNotes>AUTOMOTIVEBASESTATIONS/WIRELESSINFRASTRUCTUREKeywords:Pa,MAXQ76XXgeErasableProgramNov27,2006APPLICATIONNOTE3576In-ApplicationProgramming(IAP)oftheMAXQ7665Page-Erasable(PE)ProgramandDataFlashAbstract:Thisapplicationnotedescribeshowtoerase/writetheprogramanddataflashintheMAXQ7665microcontrollers(C)usingthebuilt-inutilityROM.ThisinformationappliestothoseMAXQ7665flash-basedCswithpage-erasable(PE)flash.IntroductionThisapplicationnotedescribeshowtomanagetheinternaldataandprogramflashintheMAXQ7665flash-basedmicrocontrollers(C)withpage-erasable(PE)flashmemory.Thisdiscussionincludesgeneralinformationforperformingin-applic……

摘要：摘要：DS1847和DS1848具有两个256位的数字电阻和查找表（LUT），自动调整超过温度范围为-40°C的电阻至95°C。DS1848还具有128字节的用户EEPROM非易失（NV）的其他数据存储。可通过一个2线接口，它是用来沟通的芯片多达八颗。目前正在生产中的两个部分，可以转让。本应用笔记介绍了DS1847的温度系数（TC），特别是，为什么的85OPPM/°C间无偿TC并不适用于使用温度查找功能的系统。它还检查的LUT编程方程的准确性。本文件并不打算是关于如何使用DS1847或DS1848的教程，所以继续之前，请检查设备数据表。ApplicationNote181DS1847/DS1848TemperatureCoefficientSupplementwww.maxim-ic.comINTRODUCTIONTheDS1847andDS1848aretemperature-controlleddigitalresistors.ThesepartsfeatureanEEPROMlookuptablethatallowsaresistivefunctionR(T)tobeenteredintomemory,andthenthepartsareabletoself-adjusttheirresistanceasafunctionoftheambienttemperature.Theprimaryapplicationofthesepartsisinsertionintosystemsrequiringcalibrationovertemperaturethatcanbeaccomplishedwithavariableresistance.Thebenefitsofusingthemincludetheeliminationofbulkymechanicalpotentiometers,ICreliability,automationofsystemcalibration,andcompensa……