EtronTech
Operation Mode
Table 3 shows the truth table for the operation commands.
EM6AB160TSA
Table 3. Truth Table (Note (1), (2))
Command
BankActivate
BankPrecharge
PrechargeAll
Write
Write and AutoPrecharge
Read
Read and Autoprecharge
Mode Register Set
Extended MRS
No-Operation
Burst Stop
Device Deselect
AutoRefresh
SelfRefresh Entry
SelfRefresh Exit
State
CKE
n-1
CKE
n
UDM LDM BA
0,1
A
10
A
0-9, 11-12
CS RAS CAS
WE
Idle
(3)
Any
Any
Active
(3)
Active
(3)
Active
(3)
Active
(3)
Idle
Idle
Any
Active
(4)
Any
Idle
Idle
Idle
(SelfRefresh)
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
L
H
L
H
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
H
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
V
V
X
V
V
V
V
Row address
L
H
L
H
L
H
X
X
Column
address
(A0 ~ A9)
Column
address
(A0 ~ A9)
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
L
L
H
H
X
L
L
X
H
X
H
X
H
X
V
X
H
X
X
H
H
H
L
L
L
L
L
L
H
H
X
L
L
X
H
X
H
X
H
X
V
X
H
X
X
H
L
L
L
L
H
H
L
L
H
L
X
H
H
X
H
X
H
X
H
X
V
X
H
X
X
OP code
OP code
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
H
L
L
H
L
H
L
H
L
H
L
H
L
X
Precharge Power Down Mode
Entry
Precharge Power Down Mode
Exit
Active Power Down Mode
Entry
Active Power Down Mode
Exit
Data Input Mask Disable
Data Input Mask Enable(5)
Idle
Any
(PowerDown)
Active
Any
(PowerDown)
Active
Active
H
X
H
H
X
X
X
X
Note:
1. V=Valid data, X=Don't Care, L=Low level, H=High level
2. CKE
n
signal is input level when commands are provided.
CKE
n-1
signal is input level one clock cycle before the commands are provided.
3. These are states of bank designated by BA signal.
4. Device state is 2, 4, and 8 burst operation.
5. LDM and UDM can be enabled respectively.
Etron Confidential
5
Rev.1.3
May 2009
ETRON [ ETRON TECHNOLOGY, INC. ]
