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EM68916CWQA-37H 参数 Datasheet PDF下载

EM68916CWQA-37H图片预览
型号: EM68916CWQA-37H
PDF下载: 下载PDF文件 查看货源
内容描述: 8M ×16位DDRII同步DRAM ( SDRAM ) [8M x 16 bit DDRII 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: 59 页 / 1180 K
品牌: ETRON [ ETRON TECHNOLOGY, INC. ]
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EtronTech  
EM68916CWQA  
Figure 12. ODT update delay timing-tMOD, as measured from outside  
CK#  
CK  
EMRS  
NOP  
NOP  
NOP  
NOP  
NOP  
CMD  
ODT  
tIS  
tAOND  
tAOFD  
tMOD, max  
Rtt  
Old setting  
New setting  
NOTE 1: EMRS command directed to EMR(1), which updates the information in EMR(1)[A6,A2], i.e. Rtt (Nominal).  
NOTE 2: "setting" in this diagram is measured from outside.  
Figure 13. ODT timing for active standby mode  
T0  
T1  
T2  
T3  
T4  
T5  
T6  
CK#  
CK  
tIS  
CKE  
tIS  
tIS  
VIH(ac)  
VIL(ac)  
ODT  
tAOND  
tAOFD  
RTT  
Internal  
Term Res.  
tAON,min  
tAOF,min  
tAON,max  
tAOF,max  
Etron Confidential  
36  
Rev. 1.1  
Apr. 2009  
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