K4C89363AF
Write Timing (Burst Length = 4)
Unidirectional DS/QS mode, Unidirectional DS/Free Running QS mode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
t
C H
t
C L
t
C K
CK
CK
t
I S
t
I H
Input
(Control &
Addresses)
L A L
( a f t e r R D A )
DESL
t
DQSS
t
D S P R E S
t
D S P
t
D S P
t
D S P
t
DSPSTH
t
D S S
t
DSPREH
t
D S P S T
C A S latency = 4
LDS/UDS
(Input)
Preamble
t
D S P R E
t
D H
t
D S
t
D S S
t
D S
t
D S
t
DH
Q0
Q1
Q2
Postamble
t
D H
Q3
DQ
(Input)
t
D Q S S
t
D S P R E S
t
DSS
t
DSPREH
t
D S P
t
D S P
t
D S P
t
D S S
t
D S P S T H
t
DSPST
C A S latency = 5
LDS/UDS
(Input)
Preamble
t
D S P R E
t
D S
t
D H
Postamble
t
D S
t
DH
t
DS
t
D H
Q3
DQ
(Input)
Q0
Q1
Q2
t
DQSS
t
D S P R E S
t
D S S
t
DSPREH
t
D S P
t
D S P
t
D S P
t
D S S
t
D S P S T H
t
DSPST
C A S latency = 6
LDS/UDS
(Input)
Preamble
t
DSPRE
t
D H
Postamble
t
D S
t
D S
t
DH
Q1
Q2
t
DS
t
D H
Q3
DQ
(Input)
Q0
LQS/UQS
(Uni-QS)
Low
LQS/UQS
(Free Runninig)
Note : DQ0 to DQ17 are sampled at both edges of LDS.
DQ18 to DQ35 are sampled at both edges of UDS.
- 16 -
REV. 0.0 Nov. 2002