EM484M1644VTD
eorex
4. Operative Command Table (Continued) (Note 7)
Current
State
/CS /R /C /W
Addr.
X
Command
Action
Continue burst to end →
Pre-charging
Continue burst to end →
H
L
X
H
X
H
X
H
DESL
X
X
NOP
BST
Pre-charging
ILLEGAL
L
L
H
H
H
L
L
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL
Read with
AP
H
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
L
L
L
H
L
L
L
H
H
L
H
L
BA/RA
ACT
BA, A10
PRE/PALL
L
L
L
L
L
L
H
L
X
REF/SELF
MRS
Op-Code
ILLEGAL
Burst to end → Write recovering
with auto pre-charge
H
X
X
X
X
DESL
Continue burst to end → Write
recovering with auto pre-charge
ILLEGAL
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
L
H
H
H
X
X
NOP
BST
L
L
H
H
H
L
L
Write with
AP
H
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
L
L
L
H
L
L
L
H
H
L
H
L
BA/RA
ACT
ILLEGAL (Note 9)
ILLEGAL
BA, A10
PRE/PALL
L
L
H
L
L
L
L
X
H
H
L
L
X
H
H
H
L
X
H
L
X
REF/SELF
MRS
Op-Code
ILLEGAL
X
X
X
DESL
NOP
BST
Nop → Enter idle after tRP
Nop → Enter idle after tRP
ILLEGAL
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
Nop → Enter idle after tRP
ILLEGAL
L
L
L
H
H
L
L
L
H
L
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
Pre-charging
H
H
BA/RA
ACT
L
L
L
H
L
L
L
L
L
X
H
H
H
L
L
X
H
H
L
H
L
X
H
L
BA, A10
PRE/PALL
REF/SELF
MRS
X
Op-Code
ILLEGAL
X
X
X
DESL
NOP
BST
Nop → Enter idle after tRCD
Nop → Enter idle after tRCD
ILLEGAL
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9, 16)
ILLEGAL (Note 9)
ILLEGAL
L
L
L
L
H
H
L
L
L
H
L
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
Row
Activating
H
H
H
L
BA/RA
ACT
L
BA, A10
PRE/PALL
L
L
L
L
L
L
H
L
X
REF/SELF
MRS
Op-Code
ILLEGAL
Remark H = High level, L = Low level, X = High or Low level (Don't care), AP = Auto Pre-charge
Apr. 2014
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