欢迎来到天天文库
浏览记录
ID:39713730
大小:227.93 KB
页数:12页
时间:2019-07-09
《05 Data EEPROM》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、Section5.DataEEPROMHIGHLIGHTSThissectionofthemanualcontainsthefollowingmajortopics:5.1Introduction....................................................................................................................5-25.2ControlRegisters............................................................
2、...............................................5-25.3DataEEPROMOperations............................................................................................5-45.4RegisterMap..................................................................................................................
3、5-95.5DesignTips..................................................................................................................5-105.6RelatedApplicationNotes............................................................................................5-115.7RevisionHistory......................
4、.....................................................................................5-125EEPROMData©2007MicrochipTechnologyInc.AdvanceInformationDS39720A-page5-1PIC24FFamilyReferenceManual5.1INTRODUCTIONInadditiontostandardFlash-basedprogrammemoryandvolatiledataRAM,certainPIC24Fdevicesalsoinclu
5、deon-chipdataEEPROM.Thismemoryblockallowsuserstostoreprogramorapplicationinformation(suchasidentification,calibrationconstants,etc.)inanonvolatileloca-tion,andeasilyrewritetheinformationwhenneeded.DataEEPROMmemoryisbasedonthesameFlashtechnologyasprogrammemory,andhasbeenoptimizedforbothlongretent
6、ionandahighernumberoferase/writecycles.ThedataEEPROMismappedtothetopoftheuserprogrammemoryspace,withthetopaddressatprogrammemoryaddress7FFFFFh.ThesizeoftheEEPROMisdevicedependent.Refertothespecificdevicedatasheetforfurtherinformation.TheEEPROMisorganizedas16-bitwidememory.Eachwordisdirectlyaddre
7、ssable;unlikeprogrammemory,thereareno“phantombytes”inodd-numberedaddresses.TheprogrammingtechniquesusedforthedataEEPROMaresimilartothoseusedforFlashprogrammemoryRTSP,discussedinprevioussections.ThekeydifferencesbetweenFlasha
此文档下载收益归作者所有