W3DG7234V-D2 Datasheet, PDF (3/6 Pages) White Electronic Designs Corporation – 256MB- 32Mx72 SDRAM UNBUFFERED

White Electronic Designs
W3DG7234V-D2
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Units
Voltage on any pin relative to VSS
VIN, VOUT -1.0 ~ 4.6
V
Voltage on VCC supply relative to VSS
VCC, VCCQ -1.0 ~ 4.6
V
Storage Temperature
TSTG
-55 ~ +150
°C
Power Dissipation
PD
18
Ω
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.
RECOMMENDED DC OPERATING CONDITIONS
Voltage Referenced to: VSS = 0V, 0°C ≤ TA ≤ 70°
Parameter
Symbol Min Typ
Max
Unit
Note
Supply Voltage
VCC
3.0 3.3
3.6
V
Input High Voltage
VIH
2.0 3.0 VCCQ+0.3 V
1
Input Low Voltage
VIL
-0.3 —
0.8
V
2
Output High Voltage
VOH
2.4
—
—
V IOH= -2mA
Output Low Voltage
VOL
—
—
0.4
V IOL= -2mA
Input Leakage Current
ILI
-10 —
10
μA
3
Note: 1. VIH (max)= 5.6V AC. The overshoot voltage duration is ≤ 3ns.
2. VIL (min)= -2.0V AC. The undershoot voltage duration is ≤ 3ns.
3. Any input 0V ≤ VIN ≤ VCCQ
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State outputs.
CAPACITANCE
TA = 25 °C, f = 1MHz, VCC = 3.3V, VREF = 1.4V ± 200mV
Parameter
Input Capacitance (A0-A11)
Input Capacitance (RAS#,CAS#,WE#)
Input Capacitance (CKE0)
Input Capacitance (CLK0)
Input Capacitance (CS0#,CS2#)
Symbol Max
Unit
CIN1
74
pF
CIN2
74
pF
CIN3
37
pF
CIN4
6
pF
CIN5
40
pF
Input Capacitance (DQM0-DQM7)
CIN6
11
pF
Input Capacitance (BA0-BA1)
Data input/output capacitance (DQ0-DQ63)
Data input/output capacitance (CB0-CB7)
CIN7
74
pF
COUT
15
pF
COUT1
15
pF
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
June, 2004
Rev. 1
3
White Electronic Designs Corporation • [phone] • www.wedc.com