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EM68932DVKB-6H 参数 Datasheet PDF下载

EM68932DVKB-6H图片预览
型号: EM68932DVKB-6H
PDF下载: 下载PDF文件 查看货源
内容描述: 4M ×32的移动DDR同步DRAM (SDRAM)的 [4M x 32 Mobile DDR Synchronous DRAM (SDRAM)]
分类和应用: 动态存储器双倍数据速率
文件页数/大小: 40 页 / 342 K
品牌: ETRON [ ETRON TECHNOLOGY, INC. ]
 浏览型号EM68932DVKB-6H的Datasheet PDF文件第32页浏览型号EM68932DVKB-6H的Datasheet PDF文件第33页浏览型号EM68932DVKB-6H的Datasheet PDF文件第34页浏览型号EM68932DVKB-6H的Datasheet PDF文件第35页浏览型号EM68932DVKB-6H的Datasheet PDF文件第36页浏览型号EM68932DVKB-6H的Datasheet PDF文件第37页浏览型号EM68932DVKB-6H的Datasheet PDF文件第38页浏览型号EM68932DVKB-6H的Datasheet PDF文件第39页  
EM68932DVKB  
EtronTech  
Figure 37. Power-Down Entry and Exit  
CK  
CK  
tRP  
tCKE  
tXP  
CKE  
PRE  
NOP  
NOP  
NOP  
NOP  
NOP  
Valid  
Valid  
Valid  
Command  
Address  
Pre All  
A10 (AP)  
DQ  
High-Z  
Power Down  
Entry  
Exit From  
Power Down  
Any  
Command  
Precharge Power-Down mode shown: all banks are idle and tRP is met  
when Power-Down Entry command is issued  
Don’t Care  
Figure 38. Deep Power-Down Entry and Exit  
T0  
T1  
Ta0  
Ta1  
Ta2  
CK  
CK  
CKE  
NOP  
DPD  
NOP  
Valid  
Valid  
Command  
Address  
DQS  
DQ  
DM  
T = 200µs  
Exit DPD Mode  
tRP  
Enter DPD Mode  
Don’t Care  
(1) Clock must be stable before exiting Deep Power-Down mode. That is, the clock must be cycling  
within specifications by Ta0  
(2) Device must be in the all banks idle state prior to entering Deep Power-Down mode  
(3) 200µs is required before any command can be applied upon exiting Deep Power-Down mode  
(4) Upon exiting Deep Power-Down mode a PRECHARGE ALL command must be issued, followed  
by two AUTO REFRESH commands and a load mode register sequence  
Etron Confidential  
40  
Rev. 1.0  
Aug. 2009  
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