EBD25EC8AAFA-6B Datasheet, PDF (9/17 Pages) Elpida Memory – 256MB Unbuffered DDR SDRAM DIMM

EBD25EC8AAFA-6B
Electrical Specifications
• All voltages are referenced to VSS (GND).
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Note
Voltage on any pin relative to VSS
VT
–0.5 to +3.6
V
Supply voltage relative to VSS
VDD
–0.5 to +3.6
V
Short circuit output current
IOS
50
mA
Power dissipation
PD
9
W
Operating ambient temperature
TA
0 to +70
°C
1
Storage temperature
Tstg
–40 to +100
°C
E_{Notes: 1. DDR SDRAM component specification.}
O^Caution
Exposing the device to stress above those listed in Absolute Maximum Ratings could cause
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
DC Operating Conditions (TA = 0 to +70°C) (DDR SDRAM Component Specification)
L ^Parameter
Symbol
Min
Typ
Max
Unit Notes
Supply voltage
VDD,VDDQ
2.3
2.5
2.7
V
1
VSS
0
0
0
V
Input reference voltage
VREF
0.49 × VDDQ
0.50 × VDDQ 0.51 × VDDQ
V
Termination voltage
VTT
VREF – 0.04
VREF
VREF + 0.04
V
Input high voltage
VIH (DC)
VREF + 0.15
—
VDDQ + 0.3
V
2
P Input low voltage
VIL (DC)
–0.3
—
VREF – 0.15
V
3
Input voltage level,
CK and /CK inputs
VIN (DC)
–0.3
—
VDDQ + 0.3
V
4
Input differential cross point
voltage, CK and /CK inputs
VIX (DC)
0.5 × VDDQ − 0.2V 0.5 × VDDQ 0.5 × VDDQ + 0.2V V
r _{Input differential voltage,}
CK and /CK inputs
VID (DC)
0.36
—
VDDQ + 0.6
V
5, 6
o ^{Notes: 1. VDDQ must be lower than or equal to VDD.}
2. VIH is allowed to exceed VDD up to 3.6V for the period shorter than or equal to 5ns.
3. VIL is allowed to outreach below VSS down to –1.0V for the period shorter than or equal to 5ns.
4. VIN (DC) specifies the allowable DC execution of each differential input.
d _{5. VID (DC) specifies the input differential voltage required for switching.}
6. VIH (CK) min assumed over VREF + 0.18V, VIL (CK) max assumed under VREF – 0.18V
uct ^{if measurement.}
Preliminary Data Sheet E0391E10 (Ver. 1.0)
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