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参数资料
| 型号： | W9464G2IB-4 |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | DRAM |
| 英文描述： | 512K X 32 DDR DRAM, 0.6 ns, PBGA144 |
| 封装： | 12 X 12 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LFBGA-144 |
| 文件页数： | 13/49页 |
| 文件大小： | 886K |
| 代理商： | W9464G2IB-4 |
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W9464G2IB
Publication Release Date: Aug. 06, 2009
- 20 -
Revision A01
8.2 Function Truth Table
(Note 1)
CURRENT
STATE
CS RAS
CAS
WE
ADDRESS
COMMAND
ACTION
NOTES
H
X
DSL
NOP
L
H
X
NOP/BST
NOP
L
H
L
H
BA, CA, A8
READ/READA
ILLEGAL
3
L
H
L
BA, CA, A8
WRIT/WRITA
ILLEGAL
3
L
H
BA, RA
ACT
Row activating
L
H
L
BA, A8
PRE/PREA
NOP
L
H
X
AREF/SELF
Refresh or Self refresh
2
Idle
L
Op-Code
MRS/EMRS
Mode register accessing
2
H
X
DSL
NOP
L
H
X
NOP/BST
NOP
L
H
L
H
BA, CA, A8
READ/READA
Begin read: Determine AP
4
L
H
L
BA, CA, A8
WRIT/WRITA
Begin write: Determine AP
4
L
H
BA, RA
ACT
ILLEGAL
3
L
H
L
BA, A8
PRE/PREA
Precharge
5
L
H
X
AREF/SELF
ILLEGAL
Row Active
L
Op-Code
MRS/EMRS
ILLEGAL
H
X
DSL
Continue burst to end
L
H
X
NOP
Continue burst to end
L
H
L
X
BST
Burst stop
L
H
L
H
BA, CA, A8
READ/READA
Term burst, new read: Determine AP
6
L
H
L
BA, CA, A8
WRIT/WRITA
ILLEGAL
L
H
BA, RA
ACT
ILLEGAL
3
L
H
L
BA, A8
PRE/PREA
Term burst, precharging
L
H
X
AREF/SELF
ILLEGAL
Read
L
Op-Code
MRS/EMRS
ILLEGAL
H
X
DSL
Continue burst to end
L
H
X
NOP
Continue burst to end
L
H
L
X
BST
ILLEGAL
L
H
L
H
BA, CA, A8
READ/READA
Term burst, start read: Determine AP
6, 7
L
H
L
BA, CA, A8
WRIT/WRITA
Term burst, start read: Determine AP
6
L
H
BA, RA
ACT
ILLEGAL
3
L
H
L
BA, A8
PRE/PREA
Term burst, Precharging
8
L
H
X
AREF/SELF
ILLEGAL
Write
L
Op-Code
MRS/EMRS
ILLEGAL
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