EM44DM1688LBB
3. Operative Command Table (Continued)
Current
State
Command
Action
/CS /R /C /W
Addr.
Precharging (Continue burst to
end)
Precharging (Continue burst to
end)
DESL
NOP
H
L
X
H
X
H
X
H
X
X
READ/READA
WRIT/WRITA
ACT
ILLEGAL (Note 1)
ILLEGAL (Note 1)
L
L
L
H
H
L
L
L
H
L
BA/CA/A10
BA/CA/A10
BA/A10
Read with
AP
ILLEGAL (Note 1)
ILLEGAL (Note 1)
ILLEGAL (Note 1)
H
H
PRE/PREA
REF/SELF
L
L
L
L
H
L
L
BA/A10
H
X
Op-Code,
Mode-Add
MRS/EMRS(1)(2) ILLEGAL (Note 1)
L
H
L
L
X
H
L
X
H
L
X
H
Write recover with auto precharge
DESL
NOP
X
X
(Continue burst to end)
Write recover with auto precharge
(Continue burst to end)
READ/READA
WRIT/WRITA
ACT
ILLEGAL (Note 1)
L
L
L
H
H
L
L
L
H
L
BA/CA/A10
BA/CA/A10
BA/RA
Write with
AP
ILLEGAL (Note 1)
ILLEGAL (Note 1)
H
H
ILLEGAL (Note 1)
ILLEGAL (Note 1)
PRE/PREA
REF/SELF
L
L
L
L
H
L
L
BA/A10
H
X
Op-Code,
Mode-Add
MRS/EMRS(1)(2) ILLEGAL (Note 1)
L
L
L
L
DESL
NOP
NOP(idle after tRP)
NOP(idle after tRP)
ILLEGAL (Note 1)
H
L
L
X
H
H
X
H
L
X
H
H
X
X
READ/READA
BA/CA/A10
WRIT/WRITA
ACT
ILLEGAL (Note 1)
ILLEGAL (Note 1)
L
L
H
L
L
L
BA/CA/A10
BA/RA
Pre-charging
H
H
PRE/PREA
REF/SELF
NOP(idle after tRP) (Note 3)
ILLEGAL (Note 1)
L
L
L
L
H
L
L
BA/A10
H
X
Op-Code,
Mode-Add
MRS/EMRS(1)(2) ILLEGAL (Note 1)
L
L
L
L
DESL
NOP
NOP(Row active after tRCD)
H
L
L
X
H
H
X
H
L
X
H
H
X
X
NOP(Row active after tRCD)
ILLEGAL (Note 1)
READ/READA
BA/CA/A10
ILLEGAL (Note 1)
WRIT/WRITA
ACT
L
L
H
L
L
L
BA/CA/A10
BA/RA
Row
Activating
ILLEGAL (Note 1)
ILLEGAL (Note 1)
ILLEGAL (Note 1)
H
H
PRE/PREA
REF/SELF
L
L
L
L
H
L
L
BA/A10
H
X
Op-Code,
Mode-Add
MRS/EMRS(1)(2) ILLEGAL (Note 1)
L
L
L
L
H = High level, L = Low level, X = High or Low level (Don't care), AP = Auto Pre-charge
Nov. 2011
18/29
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