W3EG2256M72ASSR-JD3 Datasheet, PDF (4/14 Pages) White Electronic Designs Corporation – 4GB - 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL

White Electronic Designs
W3EG2256M72ASSR-JD3
-AJD3
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Voltage on any pin relative to VSS
VIN, VOUT
-0.5 - 3.6
Voltage on VCC supply relative to VSS
VCC, VCCQ
-1.0 - 3.6
Storage Temperature
Power Dissipation
TSTG
PD
-55 - +150
27
Short Circuit Current
I0S
50
Note: Permanent device damage may occur if ‘ABSOLUTE MAXIMUM RATINGS’ are exceeded.
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability
Units
V
V
°C
W
mA
Parameter
Supply Voltage
Supply Voltage
Reference Voltage
Termination Voltage
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
DC CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VCC = 2.5V ± 0.2V
Symbol
Min
VCC
2.3
VCCQ
2.3
VREF
1.15
VTT
1.15
VIH
VREF + 0.15
VIL
-0.3
VOH
VTT + 0.76
VOL
—
Max
2.7
2.7
1.35
1.35
VCCQ + 0.3
VREF - 0.15
—
VTT - 0.76
Unit
V
V
V
V
V
V
V
V
CAPACITANCE
TA = 25°C, f = 1MHz, VCC = 2.5V ± 0.2V
Parameter
Symbol
Input Capacitance (A0-A13)
CIN1
Input Capacitance (RAS#, CAS#, WE#)
CIN2
Input Capacitance (CKE0)
CIN3
Input Capacitance (CK0,CK0#)
CIN4
Input Capacitance (CS0#)
CIN5
Input Capacitance (DQM0-DQM8)
CIN6
Input Capacitance (BA0-BA1)
CIN7
Data input/output capacitance (DQ0-DQ63)(DQS)
COUT
Data input/output capacitance (CB0-CB7)
COUT
Max
6.25
6.25
6.25
5.5
6.25
13
6.25
13
13
Unit
pF
pF
pF
pF
pF
pF
pF
pF
pF
November, 04
Rev. 3
4
White Electronic Designs Corporation • [phone] • www.wedc.com