W3EG6433S-AD4 Datasheet, PDF (4/13 Pages) White Electronic Designs Corporation – 256MB - 32Mx64 DDR SDRAM UNBUFFERED, w/PLL

White Electronic Designs
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Voltage on any pin relative to VSS
VIN, VOUT
Voltage on VCC supply relative to VSS
VCC, VCCQ
Storage Temperature
TSTG
Power Dissipation
PD
Short Circuit Current
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.
W3EG6433S-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
Symbol
Max
Unit
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)
CIN1
29
pF
CIN2
29
pF
CIN3
29
pF
CIN4
5.5
pF
CIN5
29
pF
CIN6
8
pF
CIN7
29
pF
COUT
8
pF
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
May 2005
Rev. 1
4
White Electronic Designs Corporation • [phone] • www.wedc.com