8051接口的2线串行EEPROM

Manydesignerstodayareimplementingembedded

systemsthatrequirelowcostnon-volatilememory.

Microchiphasaddressedthisneedwithafulllineof

serialEEPROMs,inavarietyofmemory

configurations,usingtheindustry-standard2or3-wire

communicationprotocols.Thetheoryandapplication

oftheseprotocolsareaddressedindetailin

Microchip’sapplicationnoteAN536.AN614Interfacingthe8051with2-wireSerialEEPROMsINTERFACINGMICROCHIPSERIALTIMINGDATAEEPROMSTOTHEINTEL8051Clockanddatatimingisaccomplishedbysoftware.FAMILYOFMICROCONTROLLERSTherearetwosetsoftimingspecications:100kHzand400kHz.Assuminga12MHz8051clock,extraManydesignerstodayareimplementingembeddedNOP’shavebeenaddedtoslowtimingdowntosystemsthatrequirelowcostnon-volatilememory.