m52s128168a-7tig Elite Semiconductor Memory Technology Inc., m52s128168a-7tig Datasheet - Page 28

• Manufacturer Part Number: m52s128168a-7tig
• Description: 2m X 16 Bit X 4 Banks Synchronous Dram
• Manufacturer: Elite Semiconductor Memory Technology Inc.

ESMT
ABBREVIATIONS :
Note :
Elite Semiconductor Memory Technology Inc.
RE-FRESHING
Current State
REGISTER
H = High Level, L = Low level, V = Valid, X = Don’t Care
BA = Bank Address, RA =Row Address, CA = Column Address, NOP = No Operation
SETTING
MODE
1. All entries assume that CKE was High during the preceding clock cycle and the current clock cycle.
2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA, depending on the state of the
3. Must satisfy bus contention, bus turn around and write recovery requirements.
4. NOP to bank precharging or in idle state. May precharge bank indicated by BA.
5. ILLEGAL of any bank is not idle.
6. Same bank’s previous auto precharg will not be performed. But if the bank is different, previous auto precharge will be
7. Refer to “Read with Auto Precharge: for more detailed information.
bank.
performed.
ILLEGAL = Device operation and / or data integrity are not guaranteed.
CS
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS
X
H
H
H
X
H
H
H
L
L
L
L
L
L
L
L
CAS
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
WE
X
H
X
H
H
X
H
X
H
H
L
L
L
L
L
L
Preliminary
X
X
BA
BA, CA, A10
BA, RA
BA, A10
X
Op-Code Mode-Add
X
X
BA
BA, CA, A10
BA, RA
BA, A10
X
Op-Code Mode-Add
Address
DESEL
Burst Stop
READ/WRITE
Active
PRE / PREA
MRS
DESEL
Burst Stop
READ / WRITE
Active
PRE / PREA
MRS
NOP
Refresh
NOP
Refresh
Command
Revision : 1.4
Publication Date : Sep. 2008
NOP (Idle after t
NOP (Idle after t
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Idle after t
NOP (Idle after t
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
M53D128168A
Action
RP
RP
RP
RP
)
)
)
)
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