eorex
Preliminary
EM42BM1684LBB
AC Operating Test Conditions
(VDD=1.8V ± 0.1V, TA=0°C ~70°C)
Item
Conditions
0.9V/0.9V
Output Reference Level
Output Load
See diagram as below
1.6V/0.2V
Input Signal Level
Transition Time of Input Signals
Input Reference Level
0.5ns
0.9V
AC Operating Test Characteristics
(VDD=1.8V±0.1V, TA=0°C ~70°C)
-7.5
Symbol
Parameter
Units
Min.
2
Max.
tDQCK
tDQSCK
tCL,tCH
tCK
DQ output access from CLK,/CLK
DQS output access from CLK,/CLK
CL low/high level width
6
ns
ns
tCK
ns
ns
2
6
0.45
7.5
0.8
0.55
Clock Cycle Time
-
-
tDH,tDS
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
tDIPW
tHZ,tLZ
tDQSQ
1.75
-
6
ns
ns
ns
1
-
0.65
Write command to first latching DQS
transition
tDQSS
tDSL,tDSH
tMRD
0.75
0.2
2
1.25
tCK
tCK
tCK
DQS input valid window
-
-
Mode Register Set command cycle
time
tWPRES
tWPST
tIH,tIS
tRPRE
Write Preamble setup time
Write Preamble
0
-
ns
0.4
0.6
tCK
Address/control input hold/setup
time
1.3
0.9
-
ns
Read Preamble
1.1
tCK
Jul. 2006
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