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參數資料
| 型號： | WED9LC6416V2012BI |
| 廠商： | MICROSEMI CORP-PMG MICROELECTRONICS |
| 元件分類： | 存儲器 |
| 英文描述： | SPECIALTY MEMORY CIRCUIT, PBGA153 |
| 封裝： | MO-163, BGA-153 |
| 文件頁數： | 3/27頁 |
| 文件大?。?/td> | 334K |
| 代理商： | WED9LC6416V2012BI |
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White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
White Electronic Designs
WED9LC6416V
SDRAM CURRENT STATE TRUTH TABLE
Command
Current State SDCE SDRAS SDCAS SDWE A12 & A13
A11-A0
Description
Action
Notes
(BA)
L
OP Code
Mode Register Set
Set the Mode Register
1
L
H
X
Auto or Self Refresh
Start Auto
1
L
H
L
X
Precharge
No Operation
L
H
BA
Row Address
Bank Activate
Activate the specified bank and row
Idle
L
H
L
BA
Column
Write w/o Precharge
ILLEGAL
2
L
H
L
H
BA
Column
Read w/o Precharge
ILLEGAL
1
L
H
L
X
Burst Termination
No Operation
1
L
H
X
No Operation
H
X
Device Deselect
No Operation
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto or Self Refresh
ILLEGAL
L
H
L
X
Precharge
3
L
H
BA
Row Address
Bank Activate
ILLEGAL
1
Row Active
L
H
L
BA
Column
Write
Start Write; Determine if Auto Precharge
4,5
L
H
L
H
BA
Column
Read
Start Read; Determine if Auto Precharge
4,5
L
H
L
X
Burst Termination
No Operation
L
H
X
No Operation
H
X
Device Deselect
No Operation
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto or Self Refresh
ILLEGAL
L
H
L
X
Precharge
Terminate Burst; Start the Precharge
L
H
BA
Row Address
Bank Activate
ILLEGAL
2
Read
L
H
L
BA
Column
Write
Terminate Burst; Start the Write cycle
5,6
L
H
L
H
BA
Column
Read
Terminate Burst; Start a new Read cycle
5,6
L
H
L
X
Burst Termination
Terminate the Burst
L
H
X
No Operation
Continue the Burst
H
X
Device Deselect
Continue the Burst
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto or Self Refresh
ILLEGAL
L
H
L
X
Precharge
Terminate Burst; Start the Precharge
L
H
BA
Row Address
Bank Activate
ILLEGAL
2
Write
L
H
L
BA
Column
Write
Terminate Burst; Start a new Write cycle
5,6
L
H
L
H
BA
Column
Read
Terminate Burst; Start the Read cycle
5,6
L
H
L
X
Burst Termination
Terminate the Burst
L
H
X
No Operation
Continue the Burst
H
X
Device Deselect
Continue the Burst
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto or Self Refresh
ILLEGAL
L
H
L
X
Precharge
ILLEGAL
2
Read with
L
H
BA
Row Address
Bank Activate
ILLEGAL
2
Auto Precharge
L
H
L
BA
Column
Write
ILLEGAL
L
H
L
H
BA
Column
Read
ILLEGAL
L
H
L
X
Burst Termination
ILLEGAL
L
H
X
No Operation
Continue the Burst
H
X
Device Deselect
Continue the Burst
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