MYX29GL01GS11DPIV2 datasheet(11/68 Pages) MICROSS

11 / 68 page

MYX29GL01GS11DPIV2

Revision 1.0 - 01/26/2015

*Advanced information. Subject to change without notice.

1Gb GL-S MirrorBit® Eclipse™

Flash Memory

MYX29GL01GS11DPIV2*

Form #: CSI-D-685 Document 001

AttheendofPORthedeviceconditionsare:

• allinternalconfigurationinformationisloaded,

• thedeviceisinreadmode,

• theStatusRegisterisatdefaultvalue,

• allbitsintheDYBASOaresettoun-protectallsectors,

• theWriteBufferisloadedwithall1’s,

• theEACisinthestandbystate.

3.1.2

Low VCC Write Inhibit

WhenVCCislessthanVLKO,theHICdoesnotacceptanywritecyclesandtheEACresets.Thisprotectsdata

duringVCCpower-upandpower-down.Thesystemmustprovidethepropersignalstothecontrolpinsto

preventunintentionalwriteswhenVCCisgreaterthanVLKO.

3 .2

Command Protection

Embedded Algorithms are initiated by writing command sequences into the EAC command memory. The

commandmemoryarrayisnotreadablebythehostsystemandhasnoASO.Eachhostinterfacewriteisa

commandorpartofacommandsequencetothedevice.TheEACexaminestheaddressanddataineach

writetransfertodetermineifthewriteispartofalegalcommandsequence.Whenalegalcommandsequence

iscompletetheEACwillinitiatetheappropriateEA.

Writingincorrectaddressordatavalues,orwritingtheminanimpropersequence,willgenerallyresultinthe

EACreturningtoitsStandbystate.However,suchanimpropercommandsequencemayplacethedevicein

anunknownstate,inwhichcasethesystemmustwritetheresetcommand,orpossiblyprovideahardware

resetbydrivingtheRESET#signalLow,toreturntheEACtoitsStandbystate,readyforrandomread.

Theaddressprovidedineachwritemaycontainabitpatternusedtohelpidentifythewriteasacommand

tothedevice.Theupperportionoftheaddressmayalsoselectthesectoraddressonwhichthecommand

operationistobeperformed.TheSectorAddress(SA)includesAMAXthroughA16flashaddressbits(system

byteaddresssignalsamaxthrougha17).AcommandbitpatternislocatedinA10toA0flashaddressbits

(systembyteaddresssignalsa11througha1).

Thedataineachwritemaybe:abitpatternusedtohelpidentifythewriteasacommand,acodethatidentifies

thecommandoperationtobeperformed,orsupplyinformationneededtoperformtheoperation.SeeTable7:

CommandDefinitions(page28)foralistingofallcommandsacceptedbythedevice.

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