EDI9LC644V2012BC View Datasheet(PDF) - White Electronic Designs Corporation
Part Name
Description
MFG CO.
'EDI9LC644V2012BC' PDF : 25 Pages View PDF
EDI9LC644V
Current State
SDCE
L
L
L
Write with
L
Auto Precharge L
L
L
L
H
L
L
L
L
Precharging
L
L
L
L
H
L
L
L
L
Row Activating
L
L
L
L
H
L
L
L
L
Write Recovering L
L
L
L
H
L
L
L
Write Recovering L
with Auto
L
Precharge
L
L
L
H
SDRAM CURRENT STATE TRUTH TABLE (CONT.)
SDRAS SDCAS
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
X
X
Command
SDWE
L
A11
SDA 10-A 0
(BA)
OP Code
Description
Mode Register Set
Action
ILLEGAL
Notes
H
X
X
Auto or Self Refresh
ILLEGAL
L
X
X
Precharge
ILLEGAL
2
H
BA Row Address Bank Activate
ILLEGAL
2
L
BA
Column
Write
ILLEGAL
H
BA
Column
Read
ILLEGAL
L
X
X
Burst Termination
ILLEGAL
H
X
X
No Operation
Continue the Burst
X
X
X
Device Deselect
Continue the Burst
L
OP Code
Mode Register Set
ILLEGAL
H
X
X
Auto or Self Refresh
ILLEGAL
L
X
X
Precharge
No Operation; Bank(s) idle after tRP
H
BA Row Address Bank Activate
ILLEGAL
2
L
BA
Column Write w/o Precharge
ILLEGAL
2
H
BA
Column Read w/o Precharge
ILLEGAL
2
L
X
X
Burst Termination No Operation; Bank(s) idle after tRP
H
X
X
No Operation No Operation; Bank(s) idle after tRP
X
X
X
Device Deselect No Operation; Bank(s) idle after tRP
L
OP Code
Mode Register Set
ILLEGAL
H
X
X
Auto or Self Refresh
ILLEGAL
L
X
X
Precharge
ILLEGAL
2
H
BA Row Address Bank Activate
ILLEGAL
2
L
BA
Column
Write
ILLEGAL
2
H
BA
Column
Read
ILLEGAL
2
L
X
X
Burst Termination No Operation; Row active after tRCD
H
X
X
No Operation No Operation; Row active after tRCD
X
X
X
Device Deselect No Operation; Row active after tRCD
L
OP Code
Mode Register Set
ILLEGAL
H
X
X
Auto orSelf Refresh
ILLEGAL
L
X
X
Precharge
ILLEGAL
2
H
BA Row Address Bank Activate
ILLEGAL
2
L
BA
Column
Write
Start Write; Determine if Auto Precharge 6
H
BA
Column
Read
Start Read; Determine if Auto Precharge 6
L
X
X
Burst Termination No Operation; Row active after tDPL
H
X
X
No Operation No Operation; Row active after tDPL
X
X
X
Device Deselect No Operation; Row active after tDPL
L
OP Code
Mode Register Set
ILLEGAL
H
X
X
Auto orSelf Refresh
ILLEGAL
L
X
X
Precharge
ILLEGAL
2
H
BA Row Address Bank Activate
ILLEGAL
2
L
BA
Column
Write
ILLEGAL
2,6
H
BA
Column
Read
ILLEGAL
2,6
L
X
X
Burst Termination No Operation; Precharge after tDPL
H
X
X
No Operation No Operation; Precharge after tDPL
X
X
X
Device Deselect No Operation; Precharge after tDPL
White Electronic Designs Corporation • Phoenix AZ • (602) 437-1520
10
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