K4C89363AF Datasheet, PDF (18/58 Pages) Samsung semiconductor – 2,097,152-WORDS x 4 BANKS x 36-BITS DOUBLE DATA RATE Network-DRAM

K4C89363AF
Function Truth Table (Notes : 1,2,3)
Command Truth Table (Notes : 4)
•T h e F i r s t C o m m a n d
Symbol
Function
DESL Device Deselect
RDA
Read with Auto-close
W R A Write with Auto-close
CS
FN
BA1-BA0
A14-A9
A8
A7
A6-A0
H
X
X
X
X
X
X
L
H
BA
UA
UA
UA
UA
L
L
BA
UA
UA
UA
UA
•T h e S e c o n d C o m m a n d ( T h e n e x t c l o c k o f R D A o r W R A c o m m a n d )
Symbol
Function
LAL
Lower Address Latch
REF
Auto-Refresh
M R S Mode Register Set
CS
FN
BA1-BA0 A14-A13 A12-A11 A10-A9 A8 A 7 A6-A0
H
X
X
V
X
X
X
X
LA
L
X
X
X
X
X
X
X
X
L
X
V
L
L
L
L
V
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
FN
BA1-BA0
A14-A9
A8
A7
A6-A0 Notes
L
H
BA
UA
UA
UA
UA
H
X
X
X
X
X
LA
Write Command Table
Command (Symbol)
WRA (1st)
LAL (2nd)
BA1-
A10~
CS
FN
A14 A13 A12 A11
A8
BA0
A9
L
L
BA
UA
UA
UA
UA
UA
UA
H
X
X
VW0 VW1
X
X
X
X
Notes : 5. A14~A13 are used for Variable Write Length (VW) control at Write Operation.
VW Truth Table
BL = 2
BL = 4
Function
Write All Words
Write First One Word
Reserved
Write All Words
Write First Two Words
Write First One Word
VW0
L
H
L
H
L
H
VW1
X
X
L
L
H
H
A7 A6-A0
UA
UA
X
LA
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REV. 0.0 Nov. 2002