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K4C89093AF-GCF5 Datasheet

  • K4C89093AF-GCF5

  • 288Mb x18 Network-DRAM2 Specification

  • 55頁

  • SAMSUNG   SAMSUNG

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K4C89183AF
Power Down Timing (CL=4, BL=4)
Write cycle to Power Down Mode
0
CLK
CLK
1
2
3
4
5
6
7
8
9
10
n-1
n
n+1
n+2
n+3
鈭?鈭?鈭?/div>
I
PDA
DESL
RDA
or
WRA
Command
WRA
LAL
DESL
Address
UA
LA
t
IH
t
IS
I
PD
=2 cycle
UA
PD
鈭?/div>
鈭?/div>
t
PDEX
WL=3
Unidirectional DS/QS mode
DS
(input)
I
PD
=2 cycle
I
RC(min),
t
REFI(max)
鈭?/div>
QS
(Output)
Low
WL=3
鈭?/div>
鈭?鈭?/div>
DC
(Output)
D0 D1 D2 D3
Unidirectional DS/Free Running QS mode
鈭?鈭?鈭?/div>
DS
(input)
QS
(Output)
WL=3
DC
(Output)
D0 D1 D2 D3
Note : PD must be kept "High" level until end of Burst data output.
PD should be brought to "High" within t
REFI
(max.) to maintain the data written into cell.
In Power Down Mode, PD "Low" and a stable clock signal must be maintained.
When PD is brought to "High", a valid executable command may be applied I
PDA
cycles later.
- 44 -
REV. 0.7 Jan. 2005

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