WED9LC6816V1310BC Ver la hoja de datos (PDF) - White Electronic Designs => Micro Semi
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WED9LC6816V1310BC Datasheet PDF : 27 Pages
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White Electronic Designs
WED9LC6816V
SDRAM Current State Truth Table (cont.)
Current State
Write with Auto
Precharge
SDCE#
L
L
L
L
L
L
L
L
SDRAS #
L
L
L
L
H
H
H
H
SDCAS#
L
L
H
H
L
L
H
H
SDWE#
L
H
L
H
L
H
L
H
Command
A12 & A13 (BA)
A11-A0
OP Code
X
X
X
X
BA
Row Address
BA
Column
BA
Column
X
X
X
X
Description
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Action
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Continue the Burst
Notes
2
2
H
X
X
X
X
X
Device Deselect
Continue the Burst
L
L
L
L
L
L
L
H
L
L
H
L
L
L
H
H
OP Code
X
X
X
X
BA
Row Address
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
ILLEGAL
ILLEGAL
No Operation; Bank(s) idle after tRP
ILLEGAL
2
Precharging
L
H
L
L
BA
L
H
L
H
BA
L
H
H
L
X
L
H
H
H
X
Column
Column
X
X
Write w/o Precharge
Read w/o Precharge
Burst Termination
No Operation
ILLEGAL
2
ILLEGAL
20
No Operation; Bank(s) idle after tRP
No Operation; Bank(s) idle after tRP
H
X
X
X
X
X
Device Deselect
No Operation; Bank(s) idle after tRP
L
L
L
L
L
L
L
L
Row Activating
L
H
L
H
L
H
L
H
H
X
L
L
L
H
H
L
H
H
L
L
L
H
H
L
H
H
X
X
OP Code
X
X
X
X
BA
Row Address
BA
Column
BA
Column
X
X
X
X
X
X
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Device Deselect
ILLEGAL
ILLEGAL
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
No Operation; Row active after tRCD
No Operation; Row active after tRCD
No Operation; Row active after tRCD
L
L
L
L
OP Code
Mode Register Set
ILLEGAL
L
L
L
H
L
L
H
L
L
L
Write
Recovering
L
H
L
H
H
H
L
L
L
H
L
H
H
L
L
H
H
H
H
X
X
X
L
L
L
L
L
L
L
H
L
L
H
L
L
L
With Recovering
with Auto
L
H
Precharging
L
H
H
H
L
L
L
H
L
H
H
L
L
H
H
H
X
X
X
X
BA
Row Address
BA
Column
BA
Column
X
X
X
X
X
X
OP Code
X
X
X
X
BA
Row Address
BA
Column
BA
Column
X
X
X
X
Auto or Self Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Device Deselect
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
ILLEGAL
ILLEGAL
2
ILLEGAL
2
Start Write; Determine if Auto Precharge
6
Start Read; Determine if Auto Precharge
6
No Operation; Precharge after tDPL
No Operation; Precharge after tDPL
No Operation; Precharge after tDPL
ILLEGAL
ILLEGAL
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2,6
ILLEGAL
2,6
No Operation; Precharge after tDPL
No Operation; Precharge after tDPL
H
X
X
X
X
Contact factory for ordering information.
X
Device Deselect
No Operation; Precharge after tDPL
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
September, 2003
Rev. 1
12
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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