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时间: 2019-12-24 18:08
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摘要:作为替代使用的PAL,GAL的,或CPLD器件来实现非易失性的选通功能,这些电路的存储使用串行接口控制数字电位器(MAX5427或MAX5527)的门控信号(阻止或发送)。Maxim>AppNotes>DigitalPotentiometersKeywords:nonvolatilegating,digitalpotentiometers,serialinterfaceJan27,2011APPLICATIONNOTE4571SimpleNonvolatileGatingBy:ReinhardtWagnerAbstract:AsanalternativetotheuseofPALs,GALs,orCPLDdevicestoimplementanon-volatilegatingfunction,thesecircuitsstorethegatingsignal(blockortransmit)usingadigitalpotentiometer(MAX5427orMAX5527)controlledbyaserialinterface.AsimilarversionofthisarticleappearedintheSeptember3,2007issueofEDNmagazine.Thefollowingdescribesasimplealternativetothenon-volatilegatingfunctiontypicallyimplementedbyaPAL,GAL,orCPLDdevice.To"gate"alogicsignal(toblockortransmitit),youusuallyempl……