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FM25Q64 参数 Datasheet PDF下载

FM25Q64图片预览
型号: FM25Q64
PDF下载: 下载PDF文件 查看货源
内容描述: 64M位串行闪存与4KB扇区,双核和四I / O SPI [64M-BIT Serial Flash Memory with 4KB Sectors, Dual and Quad I/O SPI]
分类和应用: 闪存
文件页数/大小: 61 页 / 2697 K
品牌: FIDELIX [ FIDELIX ]
 浏览型号FM25Q64的Datasheet PDF文件第44页浏览型号FM25Q64的Datasheet PDF文件第45页浏览型号FM25Q64的Datasheet PDF文件第46页浏览型号FM25Q64的Datasheet PDF文件第47页浏览型号FM25Q64的Datasheet PDF文件第49页浏览型号FM25Q64的Datasheet PDF文件第50页浏览型号FM25Q64的Datasheet PDF文件第51页浏览型号FM25Q64的Datasheet PDF文件第52页  
FM25Q64ꢀ  
11.2.32ꢀSetꢀBurstꢀwithꢀWrapꢀ(77h)ꢀ ꢀ  
TheSetBurstwithꢀWrap(77h)instructionisusedinconjunctionwithFastReadQuadI/O”andꢀ  
“Wordꢀ Readꢀ Quadꢀ I/O”ꢀ instructionsꢀ toꢀ accessꢀ afixedꢀ lengthꢀ of8/16/32/64ꢁbytesectionwithinꢀ aꢀ  
256ꢁbytepage.Certainapplicationscanꢀbenefitꢀfromꢀthisꢀfeatureꢀandꢀimproveꢀtheꢀoverallꢀsystemꢀ ꢀ  
codeꢀexecutionꢀperformance.ꢀ ꢀ  
SimilarꢀtoꢀaꢀQuadꢀI/Oꢀinstruction,ꢀtheꢀSetꢀBurstꢀwithꢀWrapꢀinstructionꢀisꢀinitiatedꢀbyꢀdrivingꢀtheꢀ/CSꢀ  
pinꢀlowꢀandꢀthenꢀshiftingꢀtheꢀinstructionꢀcodeꢀ“77h”ꢀfollowedꢀbyꢀ24ꢀdummyꢀbitsꢀandꢀ8ꢀ“WrapꢀBits”,ꢀ ꢀ  
W7ꢁ0.ꢀTheꢀinstructionꢀsequenceꢀisꢀshownꢀinꢀSetꢀBurstꢀwithꢀWrapꢀInstructionꢀSequence.ꢀ  
WrapꢀbitꢀW7ꢀandꢀtheꢀlowerꢀnibbleꢀW3ꢁ0ꢀareꢀnotꢀused.ꢀ  
W4ꢀ=ꢀ0ꢀ  
WrapꢀAroundꢀ ꢀ  
W4ꢀ=ꢀ1(Default)ꢀ  
W6,ꢀW5ꢀ  
WrapꢀLengthꢀ  
8ꢁbyteꢀ  
WrapꢀAroundꢀ  
WrapꢀLengthꢀ  
N/Aꢀ  
0ꢀ ꢀ ꢀ 0ꢀ  
0ꢀ ꢀ ꢀ 1ꢀ  
1ꢀ ꢀ ꢀ 0ꢀ  
1ꢀ ꢀ ꢀ 1ꢀ  
Yesꢀ  
Yesꢀ  
Yesꢀ  
Yesꢀ  
Noꢀ  
Noꢀ  
Noꢀ  
Noꢀ  
16ꢁbyteꢀ  
N/Aꢀ  
32ꢁbyteꢀ  
N/Aꢀ  
64ꢁbyteꢀ  
N/Aꢀ  
OnceꢀW6ꢁ4ꢀisꢀsetꢀbyꢀaꢀSetꢀBurstꢀwithꢀWrapꢀinstruction,ꢀallꢀtheꢀfollowingꢀ“FastꢀReadꢀQuadꢀI/O”ꢀandꢀ  
instructionsꢀwillꢀuseꢀtheꢀW6ꢁ4ꢀsettingꢀtoꢀaccessꢀtheꢀ8/16/32/64ꢁbyteꢀsectionꢀwithinꢀanyꢀpage.ꢀToꢀexitꢀ  
theꢀ “Wrapꢀ Around”ꢀ functionꢀ andꢀ returnꢀ toꢀ normalꢀ readoperation,ꢀ anotherꢀ ꢀ Setꢀ Burstꢀ withWrapꢀ  
instructionshouldbeissuedtosetW4ꢀ=ꢀ1.ꢀTheꢀdefaultvalueofW4ꢀuponꢀpoweronis1.Intheꢀ  
caseꢀofꢀaꢀsystemꢀResetꢀwhileꢀW4ꢀ=ꢀ0,ꢀitꢀisꢀrecommendedꢀthatꢀtheꢀ ꢀ controllerꢀ ꢀ issuesꢀaꢀSetꢀBurstꢀ  
withꢀWrapꢀinstructionꢀtoꢀresetꢀW4ꢀ=ꢀ1ꢀpriorꢀtoꢀanyꢀnormalꢀReadꢀinstructionsꢀ ꢀ sinceꢀFM25Q32ꢀdoesꢀ  
notꢀhaveꢀaꢀhardwareꢀResetꢀPin.ꢀ  
SetꢀBurstꢀwithꢀWrapꢀInstructionꢀSequenceꢀ  
preliminary(Aug.18.2010)ꢀ ꢀ ꢀ ꢀ  
48ꢀ  
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