EtronTech
4Mx32 DDR SDRAM
EM6A9320
Unit
uF
uF
Decoupling Capacitance Guide Line
Symbol
Parameter
C
DC1
Decouping Capacitance between V
DD
and V
SS
C
DC2
Decouping Capacitance between V
DDQ
and V
SSQ
Value
0.1+0.01
0.1+0.01
AC Input Operating Conditions
(VDD = 2.8V
±
5%, Ta = 0~70
°C)
Symbol
V
IH
V
IL
V
ID
V
IX
Parameter
Input High Voltage; DQ
Input Low Voltage; DQ
Clock Input Differential Voltage; Ck & CK#
Clock Input Crossing Point Voltage; Ck & CK#
Min
V
REF
+0.4
-
0.8
0.5xV
DDQ
-0.2
Max
-
V
REF
-0.4
V
DDQ
+0.6
0.5xV
DDQ
+0.2
Unit
V
V
V
V
AC Operating Test Conditions
(VDD = 2.8V
±
5%, Ta = 0~70
°C)
Reference Level of Output Signals (V
RFE
)
CK & CK# signal maximum peak swing
Output Load
Input Signal Levels
Input Signals Slew Rate
Input timing measurement reference level
Output timing measurement reference level
Reference Level of Input Signals
0.5 x V
DDQ
1.5V
See Figure. A Test Load
V
REF
+0.4 V / V
REF
-0.4 V
1 V/ns
V
REF
V
TT
0.5 x V
DDQ
Figure A. Test Load
V
TT
=0.5 x V
DDQ
50
Ω
DQ,DQS
Z0=50
W
30pF V
REF
=0.5 x V
DDQ
10
Rev 0.6
May. 2006
ETRON [ ETRON TECHNOLOGY, INC. ]
