IS42S16100E, IC42S16100E
(1,2)
COMMAND TRUTH TABLE
CKE
Symbol Command
n-1
n
X
H
L
CS RAS CAS WEDQM A11 A10 A9-A0 I/On
MRS
REF
Mode Register Set(3,4)
Auto-Refresh(5)
Self-Refresh(5,6)
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
H
X
X
X
L
L
L
L
L
H
H
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
OP CODE
X
X
X
X
X
L
X
X
X
X
HIGH-Z
SREF
PRE
L
L
HIGH-Z
Precharge Selected Bank
Precharge Both Banks
Bank Activate(7)
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
H
H
L
BS
X
X
X
X
PALL
ACT
L
L
H
L
H
L
BS Row Row
(18)
WRIT
WRITA
READ
READA
BST
Write
H
H
H
H
H
H
X
X
X
X
BS
BS
BS
BS
X
L Column
H Column
L Column
X
Write With Auto-Precharge(8)
Read(8)
Read With Auto-Precharge(8)
Burst Stop(9)
L
L
X
(18)
(18)
(18)
L
H
H
L
X
L
H Column
X
H
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
NOP
No Operation
H
X
X
X
X
X
X
X
DESL
SBY
Device Deselect
X
Clock Suspend / Standby Mode
Data Write / Output Enable
Data Mask / Output Disable
X
X
ENB
H
H
X
Active
HIGH-Z
MASK
H
X
(1,2)
DQM TRUTH TABLE
CKE
DQM
Symbol Command
n-1
n
UPPER
LOWER
ENB
Data Write / Output Enable
H
H
H
H
H
H
X
L
H
L
L
H
X
L
MASK
ENBU
ENBL
Data Mask / Output Disable
X
X
X
X
X
Upper Byte Data Write / Output Enable
Lower Byte Data Write / Output Enable
X
H
X
MASKU Upper Byte Data Mask / Output Disable
MASKL Lower Byte Data Mask / Output Disable
X
H
(1,2)
CKE TRUTH TABLE
CKE
Symbol Command
Current State
Active
n-1
n
CS RAS CAS WE A11 A10A9-A0
SPND Start Clock Suspend Mode
H
L
X
X
X
L
X
X
X
L
X
X
X
L
X
X
X
H
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
—
Clock Suspend
Other States
L
L
—
Terminate Clock Suspend Mode Clock Suspend
L
H
H
L
REF
SELF
Auto-Refresh
Idle
H
Start Self-Refresh Mode
Idle
H
L
L
L
SELFX Terminate Self-Refresh Mode
Self-Refresh
L
L
H
H
L
H
H
X
H
X
H
X
X
X
X
X
X
X
PDWN Start Power-Down Mode
Idle
H
H
L
L
L
H
H
X
H
X
H
X
X
X
X
X
X
X
—
Terminate Power-Down Mode
Power-Down
L
H
X
X
X
X
X
X
X
14
Integrated Silicon Solution, Inc. — www.issi.com
Rev. C
01/22/08
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
