參數(shù)資料
型號： UPD4664312F9-B65X-CR2
廠商： NEC Corp.
英文描述： 64M-BIT CMOS MOBILE SPECIFIED RAM 4M-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION
中文描述： 6400位CMOS移動指明內(nèi)存分詞由16位溫度范圍
文件頁數(shù)： 7/36頁
文件大?。?/td> 299K
代理商： UPD4664312F9-B65X-CR2
Preliminary Data Sheet M15867EJ5V0DS
7
μ
PD4664312-X
CONTENTS
1. Initialization....................................................................................................................................................................8
2. Partial Refresh ...............................................................................................................................................................9
2.1 Standby Mode...........................................................................................................................................................9
2.2 Density Switching......................................................................................................................................................9
2.3 Standby Mode Status Transition...............................................................................................................................9
2.4 Addresses for Which Partial Refresh Is Supported ................................................................................................10
3. Page Read Operation ..................................................................................................................................................11
3.1 Features of Page Read Operation..........................................................................................................................11
3.2 Page Length ...........................................................................................................................................................11
3.3 Page-Corresponding Addresses.............................................................................................................................11
3.4 Page Start Address.................................................................................................................................................11
3.5 Page Direction ........................................................................................................................................................11
3.6 Interrupt during Page Read Operation....................................................................................................................11
3.7 When page read is not used...................................................................................................................................11
4. Mode Register Settings................................................................................................................................................12
4.1 Mode Register Setting Method ...............................................................................................................................12
4.2 Cautions for Setting Mode Register........................................................................................................................13
5. Electrical Specifications...............................................................................................................................................14
6. Timing Charts...............................................................................................................................................................20
7. Package Drawing.........................................................................................................................................................30
8. Recommended Soldering Conditions ..........................................................................................................................31
9. Revision History...........................................................................................................................................................32
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