IS43LR16640A Datasheet, PDF (19/43 Pages) Integrated Silicon Solution, Inc – Four internal banks for concurrent operation

IS43/46LR16640A
Table8 : Current State BANKn Truth Table (COMMAND TO BANK m)
Current State
/CS
H
Any
L
Idle
X
L
Row Activating, Active,
L
or Precharging
L
L
L
Read with Auto Precha
L
rge disabled
L
L
L
Write with Auto
L
precharge disabled
L
L
L
Read with Auto
L
Precharge
L
L
L
Write with Auto
L
precharge
L
L
/RAS
X
H
X
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
Command
/CAS /WE
X
X
H
H
X
X
H
H
L
H
L
L
H
L
H
H
L
H
L
L
H
L
H
H
L
H
L
L
H
L
H
H
L
H
L
L
H
L
H
H
L
H
L
L
H
L
Description
DESELECT(NOP)
NOP
ANY
ACTIVE
READ
WRITE
PRECHARGE
ACTIVE
READ
WRITE
PRECHARGE
ACTIVE
READ
WRITE
PRECHARGE
ACTIVE
READ
WRITE
PRECHARGE
ACTIVE
READ
WRITE
PRECHARGE
Action
Continue previous Operation
Continue previous Operation
Any command allowed to bank m
Activate Row
Start READ burst
Start WRITE burst
Precharge
Activate Row
State READ burst
Start WRITE burst
Precharge
Activate Row
Start READ burst
Start WRITE burst
Precharge
Activate Row
Start READ burst
Start WRITE burst
Precharge
Activate Row
Start READ burst
Start WRITE burst
Precharge
Note
8
8
8
8,10
8,9
8
5,8
5,8,10
5,8
5,8
Rev. B | March 2014
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