W3EG7235S-JD3 Datasheet, PDF (4/12 Pages) White Electronic Designs Corporation – 256MB - 2x16Mx72 DDR SDRAM REGISTERED ECC, w/PLL

White Electronic Designs
W3EG7235S-JD3
PRELIMINARY
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
Value
-0.5 ~ 3.6
-1.0 ~ 3.6
-55 ~ +150
9
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
TA = 0°C to 70°C, VCC = 2.5V ± 0.2V
Symbol
Min
Max
Unit
VCC
2.3
2.7
V
VCCQ
2.3
2.7
V
VREF
1.15
1.35
V
VTT
1.15
1.35
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 = 2.5V
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)
Data input/output capacitance (CB0-CB7)
Symbol
Max
Unit
CIN1
6.25
pF
CIN2
6.25
pF
CIN3
6.25
pF
CIN4
5.5
pF
CIN5
6.25
pF
CIN6
13
pF
CIN7
6.25
pF
COUT
13
pF
COUT
13
pF
November 2004
Rev. 2
4
White Electronic Designs Corporation • [phone] • www.wedc.com