IS42SM16800G-6BLI Datasheet, PDF (12/33 Pages) Integrated Silicon Solution, Inc – 2M x 16Bits x 4Banks Mobile Synchronous DRAM

IS42/45SM/RM/VM16800G
Table5: Function Truth Table
Current
Command
State
/CS /RAS /CAS /WE BA
A0-A11
L
L
L
L
OP CODE
Description
Mode Register Set
L
L
L
H
X
X
Auto or Self Refresh
L
L
H
L
BA
X
Precharge
L
L
H
H
BA
Row Add.
Bank Activate
Idle
L
H
L
L
BA
Col Add./ A10 Write/WriteAP
L
H
L
H
BA
Col Add./ A10 Read/ReadAP
L
H
H
H
X
X
No Operation
H
X
X
X
X
X
Device Deselect
L
L
L
L
OP CODE
Mode Register Set
L
L
L
H
X
X
Auto or Self Refresh
L
L
H
L
BA
X
Precharge
L
L
H
H
BA
Row Add.
Bank Activate
Row
Active
L
H
L
L
BA
Col Add./A10 Write/Write AP
L
H
L
H
BA
Col Add./A10 Read/Read AP
L
H
H
H
X
X
H
X
X
X
X
X
L
L
L
L
OP CODE
L
L
L
H
X
X
No Operation
Device Deselect
Mode Register Set
Auto or Self Refresh
L
L
H
L
BA
X
Precharge
L
L
H
H
BA
Row Add.
Bank Activate
Read
L
H
L
L
BA
Col Add./A10 Write/WriteAP
L
H
L
H
BA
Col Add./A10 Read/Read AP
L
H
H
H
X
H
X
X
X
X
X
No Operation
X
Device Deselect
Action
Note
Set the Mode Register
Start Auto or Self
Refresh
No Operation
Activate the Specified
Bank and Row
ILLEGAL
ILLEGAL
No Operation
No Operation or Power
Down
ILLEGAL
ILLEGAL
Precharge
ILLEGAL
Start Write : Optional
AP(A10=H)
Start Read : Optional
AP(A10=H)
No Operation
No Operation
ILLEGAL
ILLEGAL
Termination Burst :
Start the Precharge
ILLEGAL
Termination Burst :
Start Write(AP)
Terimination Burst :
Start Read(AP)
Continue the Burst
Continue the Burst
14
5
4
4
3
3
13,14
13
7
4
6
6
13,14
13
4
8,9
8
Rev. A | Apr. 2012
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