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W3EG72128S335AD4-XG Datasheet(PDF) 4 Page - White Electronic Designs Corporation

Part # W3EG72128S335AD4-XG
Description  1GB - 2x64Mx72 DDR SDRAM UNBUFFERED ECC w/PLL
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Manufacturer  WEDC [White Electronic Designs Corporation]
Direct Link  http://www.whiteedc.com
Logo WEDC - White Electronic Designs Corporation

W3EG72128S335AD4-XG Datasheet(HTML) 4 Page - White Electronic Designs Corporation

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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
W3EG72128S-AD4
-BD4
August 2005
Rev. 3
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Units
Voltage on any pin relative to VSS
VIN, VOUT
-0.5 to 3.6
V
Voltage on VCC supply relative to VSS
VCC, VCCQ
-1.0 to 3.6
V
Storage Temperature
TSTG
-55 to +150
°C
Power Dissipation
PD
9W
Short Circuit Current
IOS
50
mA
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.
DC CHARACTERISTICS
0°C
≤ TA ≤ 70°C, VCC = 2.5V ± 0.2V
CAPACITANCE
TA = 25°C, f = 1MHz, VCC = 3.3V, VREF =1.4V ± 200mV
Parameter
Symbol
Min
Max
Unit
Supply Voltage
VCC
2.3
2.7
V
Supply Voltage
VCCQ
2.3
2.7
V
Reference Voltage
VREF
VCCQ/2 - 50mV
VCCQ/2 + 50mV
V
Termination Voltage
VTT
VREF - 0.04
VREF + 0.04
V
Input High Voltage
VIH
VREF + 0.15
VCCQ + 0.3
V
Input Low Voltage
VIL
-0.3
VREF - 0.15
V
Output High Voltage
VOH
VTT + 0.76
V
Output Low Voltage
VOL
—VTT - 0.76
V
Parameter
Symbol
Max
Unit
Input Capacitance (A0-A12)
CIN1
56
pF
Input Capacitance (RAS#, CAS#, WE#)
CIN2
56
pF
Input Capacitance (CKE0)
CIN3
29
pF
Input Capacitance (CK0,CK0#)
CIN4
5.5
pF
Input Capacitance (CS0#)
CIN5
29
pF
Input Capacitance (DQM0-DQM8)
CIN6
13
pF
Input Capacitance (BA0-BA1)
CIN7
56
pF
Data input/output capacitance (DQ0-DQ63)(DQS)
COUT
13
pF


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