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K4C89093AF-GCF5 Datasheet

  • K4C89093AF-GCF5

  • 288Mb x18 Network-DRAM2 Specification

  • 1469.39KB

  • 55頁

  • SAMSUNG   SAMSUNG

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K4C89183AF
Function Truth Table (Notes : 1,2,3)
Command Truth Table (Notes : 4)
鈥he First Command
Symbol
DESL
RDA
WRA
Function
Device Deselect
Read with Auto-close
Write with Auto-close
CS
H
L
L
FN
X
H
L
BA1-BA0
X
BA
BA
A14-A9
X
UA
UA
A8
X
UA
UA
A7
X
UA
UA
A6-A0
X
UA
UA
鈥he Second Command (The next clock of RDA or WRA command)
Symbol
LAL
REF
MRS
Function
Lower Address Latch
Auto-Refresh
Mode Register Set
CS
H
L
L
FN
X
X
X
BA1-BA0 A14-A13 A12-A11 A10-A9
X
X
V
V
X
L
X
X
L
X
X
L
A8
X
X
L
A7
X
X
V
A6-A0
LA
X
V
Notes :
1. L = Logic Low, H = Logic High, X = either L or H, V = Valid (Specified Value), BA = Bank Address, UA = Upper Address,
LA = Lower Address.
2. All commands are assumed to issue at a valid state.
3. All inputs for command (excluding SELFX and PDEX) are latched on the crossing point of differential clock input where
CLK goes to High.
4. Operation mode is decided by the comination of 1st command and 2nd command refer to "STATE DIAGRAM" and the
command table below.
Read Command Table
Command (Symbol)
RDA (1st)
LAL (2nd)
CS
L
H
FN
H
X
BA1-BA0
BA
X
A14-A9
UA
X
A8
UA
X
A7
UA
X
A6-A0
UA
LA
Notes
Write Command Table
Command (Symbol)
WRA (1st)
LAL (2nd)
CS
L
H
FN
L
X
BA1-
BA0
BA
X
A14
UA
VW0
A13
UA
VW1
A12
UA
X
A11
UA
X
A10~
A9
UA
X
A8
UA
X
A7
UA
X
A6-A0
UA
LA
Notes :
5. A14~A13 are used for Variable Write Length (VW) control at Write Operation.
VW Truth Table
Function
Reserved
BL = 4
Write All Words
Write First Two Words
Write First One Word
VW0
L
H
L
H
VW1
L
L
H
H
- 20 -
REV. 0.7 Jan. 2005

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