IC42Sxxxxx Integrated Circuit Solution, IC42Sxxxxx Datasheet - Page 11

• Manufacturer Part Number: IC42Sxxxxx
• Description: 4M x 8M x 4 Banks SDRAM
• Manufacturer: Integrated Circuit Solution

IC42S81600/IC42S81600L
IC42S16800/IC42S16800L
COMMAND TRUTH TABLE
DQM TRUTH TABLE
CKE TRUTH TABLE
Integrated Circuit Solution Inc.
DR023-0E 6/11/2004
Symbol
DESL
NOP
MRS
ACT
READ
READA
WRIT
WRITA
PRE
PALL
BST
REF
SELF
Symbol
ENB
MASK
Symbol
—
—
—
REF
SELF
—
—
—
Notes:
H : High level
X : High or Low level (Don’t care)
Command
Clock suspend mode entry
Clock suspend
Clock suspend mode exit
CBR refresh command
Self refresh entry
Self refresh exit
Power down entry
Power down exit
Command
Data Write / Output Enable
Data Mask / Output Disable
Command
Device deselect
Mode register set
Read
Read with auto precharge
Write
Write with auto precharge
Precharge select bank
Precharge all banks
Burst stop
CBR (Auto) refresh
Self refresh
No operation
Bank activate
L : Low level
V : Valid Data input
Any
Current State
Activating
Clock suspend
Idle
Idle
Self refresh
Idle
Power down
n-1
n-1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
CKE
CKE
X
X
X
X
X
X
X
X
X
X
X
H
n
L
n-1
n
X
X
H
H
H
H
L
L
L
L
L
CKE
CS
CS
CS
CS
CS
H
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
n
L
L
L
L
DQM
RAS
RAS
RAS
RAS
RAS
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
CS
CS
CS
CS
CS
X
X
X
H
X
X
L
L
L
CAS
CAS
CAS
CAS
CAS
H
H
H
H
H
X
L
L
L
L
L
L
L
RAS
RAS
RAS
RAS
RAS
X
X
X
H
X
X
X
L
L
WE
WE
WE
WE
WE
H
H
H
H
H
H
X
L
L
L
L
L
L
CAS
CAS
CAS
CAS
CAS
X
X
X
H
X
X
X
L
L
BA
V
V
V
V
V
V
X
X
L
X
X
X
X
WE
WE
WE
WE
WE
H
H
H
X
X
X
X
X
X
A10 A9-A0
X
X
V
H
H
H
X
X
X
L
L
L
L
Addreess
A11
X
X
V
V
V
V
V
V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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