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EDS2532CABJ-75L-E 参数 Datasheet PDF下载

EDS2532CABJ-75L-E图片预览
型号: EDS2532CABJ-75L-E
PDF下载: 下载PDF文件 查看货源
内容描述: 256M位的SDRAM [256M bits SDRAM]
分类和应用: 存储内存集成电路动态存储器时钟
文件页数/大小: 48 页 / 637 K
品牌: ELPIDA [ ELPIDA MEMORY ]
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EDS2532CABJ  
Function Truth Table  
The following table shows the operations that are performed when each command is issued in each mode of the  
SDRAM.  
The following table assumes that CKE is high.  
Current state  
/CS  
/RAS /CAS /WE  
Address  
Command  
Operation  
Precharge  
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
×
×
×
×
DESL  
Enter IDLE after tRP  
Enter IDLE after tRP  
ILLEGAL  
ILLEGAL*3  
ILLEGAL*3  
ILLEGAL*3  
NOP*5  
H
H
H
H
L
H
H
L
H
L
×
NOP  
×
BST  
H
L
BA, CA, A10  
READ/READA  
WRIT/WRITA  
ACT  
L
BA, CA, A10  
H
H
L
H
L
BA, RA  
L
BA, A10  
PRE, PALL  
REF, SELF  
MRS  
L
H
L
×
ILLEGAL  
L
L
MODE  
ILLEGAL  
Idle  
×
×
×
×
DESL  
NOP  
H
H
H
H
L
H
H
L
H
L
×
NOP  
NOP  
×
BST  
ILLEGAL  
H
L
BA, CA, A10  
READ/READA  
WRIT/WRITA  
ACT  
ILLEGAL*4  
ILLEGAL*4  
Bank and row active  
NOP  
L
BA, CA, A10  
H
H
L
H
L
BA, RA  
L
BA, A10  
PRE, PALL  
REF, SELF  
MRS  
L
H
L
×
Refresh  
Mode register set*8  
L
L
MODE  
Row active  
×
×
×
×
DESL  
NOP  
H
H
H
H
H
H
L
H
L
×
NOP  
NOP  
×
BST  
ILLEGAL  
H
L
BA, CA, A10  
BA, CA, A10  
READ/READA  
WRIT/WRITA  
Begin read*6  
Begin write*6  
L
Other bank active  
L
L
H
H
BA, RA  
ACT  
ILLEGAL on same bank*2  
L
L
L
H
L
L
L
L
L
×
H
L
L
H
L
×
BA, A10  
PRE, PALL  
REF, SELF  
MRS  
Precharge*7  
×
ILLEGAL  
L
MODE  
ILLEGAL  
Read  
×
×
×
×
DESL  
Continue burst to end  
Continue burst to end  
Burst stop  
H
H
H
H
H
L
NOP  
BST  
Continue burst read to /CAS  
latency and New read  
L
L
L
H
H
L
L
L
H
H
L
BA, CA, A10  
BA, CA, A10  
BA, RA  
READ/READA  
WRIT/WRITA  
ACT  
Term burst read/start write  
Other bank active  
H
ILLEGAL on same bank*2  
L
L
L
L
L
L
H
L
L
L
H
L
BA, A10  
×
PRE, PALL  
REF, SELF  
MRS  
Term burst read and Precharge  
ILLEGAL  
MODE  
ILLEGAL  
Data Sheet E0460E40 (Ver. 4.0)  
14