h57v2562gtr Hynix Semiconductor, h57v2562gtr Datasheet - Page 21

• Manufacturer Part Number: h57v2562gtr
• Description: 256mb Synchronous Dram Based 4bank
• Manufacturer: Hynix Semiconductor

CKE Enable(CKE) Truth TABLE
Rev 1.0 / Aug. 2009
Current
Refresh
State
Power
Down
Banks
Self
Idle
All
Previous
Cycle
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
CKE
Current
Cycle
H
H
H
H
H
X
H
H
H
H
H
X
H
H
X
L
L
L
L
L
L
L
CS
H
H
H
H
X
X
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS
H
H
H
H
H
H
X
X
L
X
X
X
L
X
X
X
X
L
L
L
X
L
L
L
X
(Sheet 2 of 1)
CAS
Command
H
H
H
H
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
WE
H
H
H
H
X
X
L
X
X
X
X
X
X
X
L
X
X
X
X
L
X
X
X
L
X
BA0,
BA1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
OP CODE
OP CODE
Synchronous DRAM Memory 256Mbit
ADDR
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
INVALID
Exit Self Refresh with
Device Deselect
Exit Self Refresh with
No Operation
ILLEGAL
ILLEGAL
ILLEGAL
Maintain Self Refresh
INVALID
Power Down mode exit,
all banks idle
ILLEGAL
Maintain Power Down Mode
Refer to the idle State section
of the Current State
Truth Table
Auto Refresh
Mode Register Set
Refer to the idle State section
of the Current State
Truth Table
Entry Self Refresh
Mode Register Set
Power Down
H57V2562GTR Series
Action
Notes
2
2
2
2
2
3
3
3
3
3
3
4
4
1
2
2
1
4
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