IC42S81600/IC42S81600L
IC42S16800/IC42S16800L
OPERATION COMMAND TABLE
(1)
Current State Command
Idle
DESL
NOP or BST
READ / READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
Operation
NOP or Power-Down
(2)
NOP or Power-Down
(2)
Illegal
(3)
Illegal
(3)
Row Active
NOP
Refresh or Self-Refresh
(4)
Mode Register Set
NOP
NOP
Begin read : Determine AP
(5)
Begin write : Determine AP
(5)
CS
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
RAS
X
H
H
H
L
L
L
L
X
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
CAS
X
H
L
L
H
H
L
L
X
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
WE
X
X
H
L
H
L
H
L
X
H
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
Address
X
X
BA, CA, A10
BA, CA, A10
BR, RA
BA, A10
X
Op-Code
Row Active
X
X
BA, CA, A10
BA, CA, A10
BR, RA
BA, A10
Illegal
(3)
Precharge
(6)
Illegal
Illegal
Continue burst to end
→
Row active
Continue burst to end
→
Row active
Burst stop
→
Row active
Term burst, new read : Determine AP
(7)
Term burst, start write : Determine AP
(7, 8)
X
Op-Code
Read
X
X
X
BA, CA, A10
BA, CA, A10
BR, RA
BA, A10
X
Op-Code
Illegal
(3)
Term burst, precharging
Illegal
Illegal
Continue burst to end
→
write recovering
Continue burst to end
→
write recovering
Burst stop
→
Row active
Term burst, start read : Determine AP
(7, 8)
Term burst, new write : Determine AP
(7)
Write
X
X
X
BA, CA, A10
BA, CA, A10
BR, RA
BA, A10
Illegal
(3)
Term burst, precharging
(9)
Illegal
Illegal
Continue burst to end
→
Precharging
Continue burst to end
→
Precharging
X
Op-Code
Read With
Auto-
Precharge
Illegal
Illegal
(11)
Illegal
(11)
Illegal
(3)
Illegal
(11)
Illegal
Illegal
X
X
X
BA, CA, A10
BA, CA, A10
BR, RA
BA, A10
X
Op-Code
12
Integrated Circuit Solution Inc.
DR023-0E 6/11/2004
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
