eorex
AC Operating Test Conditions
(V
DD
=1.8V
±
0.1V, T
A
=0°C ~70°C)
Item
Output Reference Level
Output Load
Input Signal Level
Transition Time of Input Signals
Input Reference Level
EM42AM3284LBA
Conditions
0.9V/0.9V
See diagram as below
1.6V/0.2V
0.5ns
0.9V
AC Operating Test Characteristics
(V
DD
=1.8V±0.1V, T
A
=0°C ~70°C)
Symbol
t
DQCK
t
DQSCK
t
CL
,t
CH
t
CK
t
DH
,t
DS
t
DIPW
t
HZ
,t
LZ
t
DQSQ
t
DQSS
t
DSL
,t
DSH
t
MRD
t
WPRES
t
WPST
t
IH
,t
IS
t
RPRE
Parameter
DQ output access from CLK,/CLK
DQS output access from CLK,/CLK
CL low/high level width
Clock Cycle Time
DQ and DM hold/setup time
DQ and DM input pulse width for
each input
Data out high/low impedance time
from CLK,/CLK
DQS-DQ skew for associated DQ
signal
Write command to first latching DQS
transition
DQS input valid window
Mode Register Set command cycle
time
Write Preamble setup time
Write Preamble
Address/control input hold/setup
time
Read Preamble
0.8
1.75
1
6
0.6
0.75
0.2
2
0
0.4
1.3
0.9
1.1
0.6
1.25
-7.5
Min.
Max.
2
2
0.45
7.5
6
6
0.55
Units
ns
ns
t
CK
ns
ns
ns
ns
ns
t
CK
t
CK
t
CK
ns
t
CK
ns
t
CK
Jul. 2006
7/20
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