MYX29GL01GS11DPIV2 datasheet(26/68 Pages) MICROSS

26 / 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

5.4.2

Data Polling Status

DuringanactiveEmbeddedAlgorithmtheEACswitchestotheDataPollingASOtodisplayEAstatustoany

readaccess.Asinglewordofstatusinformationisaliasedinalllocationsofthedeviceaddressspace.Inthe

statuswordthereareseveralbitstodeterminethestatusofanEA.ThesearereferredtoasDQbitsasthey

appearonthedatabusduringareadaccesswhileanEAisinprogress.DQbits15to8,DQ4,andDQ0are

reservedandprovideundefineddata.Statusmonitoringsoftwaremustmaskthereservedbitsandtreatthem

asdon’tcare.

5 .5

Error Types and Clearing Procedures

Therearethreetypesoferrorsreportedbytheembeddedoperationstatusmethods.Dependingontheerror

type,thestatusreportedandprocedureforclearingtheerrorstatusisdifferent.Followingistheclearingoferror

status:

• IfanASOwasenteredbeforetheerrorthedeviceremainsenteredintheASOawaitingASOreadora

commandwrite.

• Ifanerasewassuspendedbeforetheerrorthedevicereturnstotheerasesuspendedstateawaiting

flasharrayreadoracommandwrite.

• Otherwise,thedevicewillbeinstandbystateawaitingflasharrayreadoracommandwrite.

5.5.1

Embedded Operation Error

Ifanerroroccursduringanembeddedoperation(program,erase,blankcheck,orpasswordunlock)thedevice

(EAC)remainsbusy.TheRY/BY#outputremainsLow,datapollingstatuscontinuestobeoverlaidonall

addresslocations,andthestatusregistershowsreadywithvalidstatusbits.Thedeviceremainsbusyuntil

theerrorstatusisdetectedbythehostsystemstatusmonitoringandtheerrorstatusiscleared.

5.5.2

Protection Error

Ifanembeddedalgorithmattemptstochangedatawithinaprotectedarea(program,oreraseofaprotected

sectororOTParea)thedevice(EAC)goesbusyforaperiodof20to100μsthenreturnstonormaloperation.

DuringthebusyperiodtheRY/BY#outputremainsLow,datapollingstatuscontinuestobeoverlaidonall

addresslocations,andthestatusregistershowsnotreadywithinvalidstatusbits(SR[7]=0).

5.5.3

Write Buffer Abort

If an error occurs during a Write to Buffer command the device (EAC) remains busy. The RY/BY# output

remains Low, data polling status continues to be overlaid on all address locations, and the status register

showsreadywithvalidstatusbits.Thedeviceremainsbusyuntiltheerrorstatusisdetectedbythehostsystem

statusmonitoringandtheerrorstatusiscleared.

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