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AS4C64M8D2 데이터시트(PDF) 37 Page - Alliance Semiconductor Corporation

부품명 AS4C64M8D2
상세설명  Fully synchronous operation
PDF  59 Pages
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제조업체  ALSC [Alliance Semiconductor Corporation]
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AS4C64M8D2 데이터시트(HTML) 37 Page - Alliance Semiconductor Corporation

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AS4C64M8D2
Confidential
37
Rev. 1.0
Feb. /2014
Figure 15. Posted CAS# operation: AL=2
Read followed by a write to the same bank
CK#
CMD
AL=2
-1
1
2
3
4
5
6
7
8
9
0
10
11
12
Active
A-Bank
Read
A-Bank
Write
A-Bank
CL=3
WL=RL-1=4
Dout 0 Dout 1 Dout 2 Dout 3
Din 0
Din 1
Din 2
Din 3
RL=AL+CL=5
>=tRCD
[ AL=2 and CL=3, RL= (AL+CL)=5, WL= (RL-1)=4, BL=4]
DQS
DQ
CK
DQS#
Figure 16. Posted CAS# operation: AL=0
Read followed by a write to the same bank
CK#
CMD
AL=0
-1
1
2
3
4
5
6
7
8
9
0
10
11
12
Active
A-Bank
Read
A-Bank
Write
A-Bank
CL=3
WL=RL-1=2
Dout 0 Dout 1 Dout 2 Dout 3
Din 0
Din 1
Din 2
Din 3
RL=AL+CL=3
>=tRCD
[ AL=0 and CL=3, RL= (AL+CL)=3, WL= (RL-1)=2, BL=4]
DQS
DQ
CK
DQS#



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