W3EG6464S-AD4 Datasheet, PDF (4/9 Pages) White Electronic Designs Corporation – 512MB - 64Mx64 DDR SDRAM UNBUFFERED w/PLL

White Electronic Designs
ABSOLUTE MAXIMUM RATINGS
Parameter
Voltage on any pin relative to VSS
Voltage on VCC supply relative to VSS
Storage Temperature
Power Dissipation
Short Circuit Current
Symbol
VIN, VOUT
VCC, VCCQ
TSTG
PD
IOS
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.
W3EG6464S-AD4
-BD4
PRELIMINARY
Value
-0.5 to 3.6
-1.0 to 3.6
-55 to +150
8
50
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
Max
Unit
VCC
2.3
2.7
V
VCCQ
2.3
2.7
V
VREF
VCCQ/2 - 50mV
VCCQ/2 + 50mV
V
VTT
VREF - 0.04
VREF + 0.04
V
VIH
VREF + 0.15
VCCQ + 0.3
V
VIL
-0.3
VREF - 0.15
V
VOH
VTT + 0.76
—
V
VOL
—
VTT - 0.76
V
CAPACITANCE
TA = 25°C, f = 1MHz, VCC = 3.3V, VREF =1.4V ± 200mV
Parameter
Input Capacitance (A0-A12)
Input Capacitance (RAS#, CAS#, WE#)
Input Capacitance (CKE0)
Input Capacitance (CK0,CK0#)
Input Capacitance (CS0#)
Input Capacitance (DQM0-DQM8)
Input Capacitance (BA0-BA1)
Data input/output capacitance (DQ0-DQ63)(DQS)
Symbol
Max
Unit
CIN1
26
pF
CIN2
26
pF
CIN3
26
pF
CIN4
5.5
pF
CIN5
26
pF
CIN6
8
pF
CIN7
26
pF
COUT
8
pF
March 2004
Rev. 1
4
White Electronic Designs Corporation • [phone] • www.wedc.com