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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. ]
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EM68932DVKB  
EtronTech  
Figure 14. Read Burst Showing CAS Latency  
CK  
CK  
READ  
NOP  
NOP  
NOP  
NOP  
NOP  
Command  
Address  
BA, Col n  
CL = 2  
CL = 3  
DQS  
DQ  
DO n  
DQS  
DQ  
DO n  
Don’t Care  
(1) DO n = Data Out from column n  
(2) BA, Col n = Bank A, Column n  
(3) Burst Length = 4; 3 subsequent elements of Data Out appear in the programmed order following DO n  
(4) Shown with nominal tAC, tDQSCK and tDQSQ  
Figure 15. Consecutive Read Bursts  
CK  
CK  
READ  
NOP  
READ  
NOP  
NOP  
NOP  
Command  
Address  
BA, Col n  
BA, Col b  
CL = 2  
CL = 3  
DQS  
DQ  
DO n  
DO b  
DQS  
DQ  
DO n  
DO b  
Don’t Care  
(1) DO n (or b) = Data Out from column n (or column b)  
(2) Burst Length = 4 or 8 (if 4, the bursts are concatenated; if 8 , the second burst interrupts the first)  
(3) Read bursts are to an active row in any bank  
(4) Shown with nominal tAC, tDQSCK and tDQSQ  
Etron Confidential  
25  
Rev. 1.0  
Aug. 2009  
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