IS42S83200D, IS42S16160D
IS45S83200D, IS45S16160D
FUNCTIONAL TRUTH TABLE Continued:
Current State
Read with auto
Precharging
Write with Auto
Precharge
Precharging
Row Activating
CS
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
H
L
L
L
L
L
L
L
L
RAS CAS
×
H
H
H
H
L
L
L
L
×
H
H
H
H
L
L
L
L
×
H
H
H
H
L
L
L
L
×
H
H
H
H
L
L
L
L
×
H
H
L
L
H
H
L
L
×
H
H
L
L
H
H
L
L
×
H
H
L
L
H
H
L
L
×
H
H
L
L
H
H
L
L
WE
×
H
L
H
L
H
L
H
L
×
H
L
H
L
H
L
H
L
×
H
L
H
L
H
L
H
L
×
H
L
H
L
H
L
H
L
Address
×
x
×
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
OC, BA
×
×
×
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
OC, BA
×
×
×
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
OC, BA
×
×
×
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
OC, BA
Command
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
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
Action
Continue burst to end, Precharge
Continue burst to end, Precharge
ILLEGAL
ILLEGAL
(11)
ILLEGAL
(11)
ILLEGAL
(3)
ILLEGAL
(11)
ILLEGAL
ILLEGAL
Continue burst to end, Write
recovering with auto precharge
Continue burst to end, Write
recovering with auto precharge
ILLEGAL
ILLEGAL
(11)
ILLEGAL
(11)
ILLEGAL
(3,11)
ILLEGAL
(3,11)
ILLEGAL
ILLEGAL
Nop, Enter idle after tRP
Nop, Enter idle after tRP
Nop, Enter idle after tRP
ILLEGAL
(3)
ILLEGAL
(3)
ILLEGAL
(3)
Nop Enter idle after tRP
ILLEGAL
ILLEGAL
Nop, Enter bank active after tRCD
Nop, Enter bank active after tRCD
Nop, Enter bank active after tRCD
ILLEGAL
(3)
ILLEGAL
(3)
ILLEGAL
(3,9)
ILLEGAL
(3)
ILLEGAL
ILLEGAL
Note: H=V
ih
, L=V
il
x= V
ih
or V
il
, V = Valid Data, BA= Bank Address, CA+Column Address, RA=Row Address, OC= Op-Code
Integrated Silicon Solution, Inc. — www.issi.com
Rev. B
06/11/09
11
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
