简单的非易失性门控

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