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M12L64164A-6BIG 参数 Datasheet PDF下载

M12L64164A-6BIG图片预览
型号: M12L64164A-6BIG
PDF下载: 下载PDF文件 查看货源
内容描述: 1M ×16位×4银行同步DRAM [1M x 16 Bit x 4 Banks Synchronous DRAM]
分类和应用: 存储内存集成电路动态存储器
文件页数/大小: 45 页 / 821 K
品牌: ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
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ESMT  
M12L64164A  
Operation Temperature Condition -40°C~85°C  
10. Clock Suspend Exit & Power Down Exit  
1 ) C l o c k S u s p e n d ( = Ac t i v e P o w e r D o w n ) E x i t  
2 ) P o w e r D o w n ( = P r e c h a r g e P o w e r D o w n )  
CLK  
CK E  
CLK  
CK E  
tS S  
tS S  
Inter nal  
Internal  
CLK  
* N o t e 1  
* N o t e 2  
CLK  
C M D  
R D  
C M D  
NO P  
A C T  
11. Auto Refresh & Self Refresh  
* N o t e 3  
1 ) A u t o Re f r e s h  
&
S e lf R e f r e s h  
C L K  
* N o t e 4  
* No t e 5  
CMD  
PR E  
CMD  
AR  
C KE  
t RP  
t RF C  
* N o t e 6  
2 ) S e l f Re f r e s h  
C L K  
* N o t e 4  
CM D  
SR  
PR E  
C MD  
C KE  
t R P  
tR F C  
*Note : 1. Active power down : one or more banks active state.  
2. Precharge power down : all banks precharge state.  
3. The auto refresh is the same as CBR refresh of conventional DRAM.  
No precharge commands are required after auto refresh command.  
During tRFC from auto refresh command, any other command can not be accepted.  
4. Before executing auto/self refresh command, all banks must be idle state.  
5. MRS, Bank Active, Auto/Self Refresh, Power Down Mode Entry.  
6. During self refresh entry, refresh interval and refresh operation are performed internally.  
After self refresh entry, self refresh mode is kept while CKE is low.  
During self refresh entry, all inputs expect CKE will be don’t cared, and outputs will be in Hi-Z state.  
For the time interval of tRFC from self refresh exit command, any other command can not be accepted.  
Elite Semiconductor Memory Technology Inc.  
Publication Date: Dec. 2007  
Revision: 1.2 23/45  
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