K4C89183AF
Read Timing (Burst Length = 4)
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
CH
t
CL
t
CK
CK
CK
Input
(Control &
Addresses)
LDS/UDS
(Input)
t
CKQS
t
CKQS
t
QSP
t
QSP
t
IS
t
IH
LAL
(after RDA)
DESL
CAS latency = 4
LQS/UQS
(Output)
t
LZ
t
CKQS
t
QSQV
t
QSQ
t
QSQ
Q1
t
AC
t
QSQV
Q2
t
AC
t
QSQ
t
HZ
Q3
t
OH
DQ
(Output)
High-Z
Q0
t
AC
t
CKQS
t
CKQS
t
QSP
t
QSP
CAS latency = 5
LQS/UQS
(Output)
t
LZ
t
CKQS
t
QSQV
t
QSQ
t
QSQ
Q1
t
AC
t
QSQV
Q2
t
AC
t
QSQ
t
HZ
Q3
t
OH
DQ
(Output)
High-Z
Q0
t
AC
t
CKQS
t
CKQS
t
QSP
t
QSP
CAS latency = 6
LQS/UQS
(Output)
t
LZ
t
CKQS
t
QSQV
t
QSQ
t
QSQ
Q1
t
AC
t
QSQV
Q2
t
AC
t
QSQ
t
HZ
Q3
t
OH
DQ
(Output)
High-Z
Q0
t
AC
Note : DQ0 to DQ17 are aligned with LQS.
DQ18 to DQ35 are aligned with UQS.
LQS/UQS is always asserted in Free Running QS mode.
- 17 -
REV. 0.7 Jan. 2005