标签: ds1867

Abstract:ThisapplicationnotedescribeshowtousetheDS3900PCserialportto3-wireinterfacetocommunicatewiththethreedigitalpots,theDS1267,DS1867,andDS1868,whichusethisshiftregisterinterfaceforprogramming.TheDS3900isamodulethathasaMAX3223RS-232transceiverandamicroprocessorwhichactsasaninterfacebetweenthePC'sserialportthe3-wiredevicebeingcontrolled.Thetransceiverallowsthemodule’smicroprocessortocommunicatewithaPCandthemicroprocessorimplementsacommandstructure,viaitsparallelport,toallowaPCtoreadorwritethethreedigitalpotentiometers.TheapplicationnotedescribestheDS3900andhowtointerfaceittothedevicesundertest.ThesourcecodedescribedinthearticleisavailableonDallasSemiconductor’sFTPsite.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSDIGITALPOTENTIOMETERSGENERALENGINEERINGTOPICSKeywords:DS1267,DS1867,DS1868,DS3900,3-wire,digitalpots,3wire,digitalpotentiometersAug27,2002APPLICATIONNOTE213UsingaPCwithaDS3900toCommunicatewithDS1267s,DS1867s,andDS1868sAbstract:ThisapplicationnotedescribeshowtousetheDS3900PCserialportto3-wireinterfacetocommunicatewiththethreedigitalpots,theDS1267,DS1867,andDS1868,whichusethisshiftregisterinterfaceforprogramming.TheDS3900isamodulethathasaMAX3223RS-232transceiverandamicroprocessorwhichactsasaninterfacebetweenthePC'sserialportthe3-wiredevicebeingcontrolled.Thetransceiverallowsthemodule’smicroproces……

摘要：本应用笔记介绍了如何使用3线接口与DS3900PC串口通信与三个数字电位器，DS1267，DS1867，DS1868，使用这种移位寄存器的编程接口。与DS3900是一个模块，有1MAX3223RS-232收发器和微处理器充当PC的串口被控制的3线设备之间的接口。允许微处理器模块的通信与PC和微处理器实现的命令结构，通过并行端口，让PC机读取或写入的三个数字电位器的收发器。本应用笔记介绍了与DS3900和如何连接到被测设备。本文中所描述的源代码是达拉斯半导体公司的FTP站点上可用。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSDIGITALPOTENTIOMETERSGENERALENGINEERINGTOPICSKeywords:DS1267,DS1867,DS1868,DS3900,3-wire,digitalpots,3wire,digitalpotentiometersAug27,2002APPLICATIONNOTE213UsingaPCwithaDS3900toCommunicatewithDS1267s,DS1867s,andDS1868sAbstract:ThisapplicationnotedescribeshowtousetheDS3900PCserialportto3-wireinterfacetocommunicatewiththethreedigitalpots,theDS1267,DS1867,andDS1868,whichusethisshiftregisterinterfaceforprogramming.TheDS3900isamodulethathasaMAX3223RS-232transceiverandamicroprocessorwhichactsasaninterfacebetweenthePC'sserialportthe3-wiredevicebeingcontrolled.Thetransceiverallowsthemodule’smicroproces……

摘要：DS1867是一个数字电位器使用EEPROM存储器存储电位器设置，当设备断电。设备的写入过程发生在掉电周期，使该设备“记住”它的最后一个电位器设定在未来的电周期。读写EEPROM的过程，需要一段时间的最低数额，而这往往是长于电源设备在断电在一些应用中。如果是这种情况，需要外部电路提供电源，以保证在掉电周期写入EEPROM正确。给出了一个例子电路，显示此配置。Maxim>AppNotes>DIGITALPOTENTIOMETERSKeywords:digitpotEpot,EEPOT,digitalpot,DS1867,digitalpots,digitalpotentiometersApr30,2001APPLICATIONNOTE87DS1867PowerSupplyConditioningforEEPROMWiperStorageAbstract:TheDS1867isadigitalpotentiometerthatusesEEPROMmemorytostorepotentiometersettingswhenthedeviceispoweredoff.Thewriteprocesstothedeviceoccursduringthepower-downcyclesothatthedevice"remembers"it'slastpotentiometersettingduringthenextpower-upcycle.TheprocessofwritingEEPROMtakesaminimumamountoftime,whichcanoftenbelongerthanpowerisavailabletothedeviceduringpower-downinsomeapplications.Ifthisisthecase,externalcircuitryisrequiredtosupplypowerduringthepower-downcycleto……

摘要：本应用笔记介绍了如何使用3线接口与DS3900PC串口通信与三个数字电位器，DS1267，DS1867，DS1868，使用这种移位寄存器的编程接口。与DS3900是一个模块，有1MAX3223RS-232收发器和微处理器充当PC的串口被控制的3线设备之间的接口。允许微处理器模块的通信与PC和微处理器实现的命令结构，通过并行端口，让PC机读取或写入的三个数字电位器的收发器。本应用笔记介绍了与DS3900和如何连接到被测设备。本文中所描述的源代码是达拉斯半导体公司的FTP站点上可用。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSDIGITALPOTENTIOMETERSGENERALENGINEERINGTOPICSKeywords:DS1267,DS1867,DS1868,DS3900,3-wire,digitalpots,3wire,digitalpotentiometersAug27,2002APPLICATIONNOTE213UsingaPCwithaDS3900toCommunicatewithDS1267s,DS1867s,andDS1868sAbstract:ThisapplicationnotedescribeshowtousetheDS3900PCserialportto3-wireinterfacetocommunicatewiththethreedigitalpots,theDS1267,DS1867,andDS1868,whichusethisshiftregisterinterfaceforprogramming.TheDS3900isamodulethathasaMAX3223RS-232transceiverandamicroprocessorwhichactsasaninterfacebetweenthePC'sserialportthe3-wiredevicebeingcontrolled.Thetransceiverallowsthemodule’smicroproces……