W3DG644V-D2 Datasheet, PDF (3/6 Pages) White Electronic Designs Corporation – 32MB - 4M x 64 SDRAM UNBUFFERED

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
Value
-1.0 ~ 4.6
-1.0 ~ 4.6
-55 ~ +150
4
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.
W3DG644V-D2
PRELIMINARY
Units
V
V
°C
W
mA
RECOMMENDED DC OPERATING CONDITIONS
Voltage Referenced to: VSS = 0V, 0°C ≤ TA ≤ 70°C
Parameter
Supply Voltage
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
Input Leakage Current
Symbol
Min
VCC
3.0
VIH
2.0
VIL
-0.3
VOH
2.4
VOL
—
ILI
-10
Typ
Max
Unit
3.3
3.6
V
3.0
VCCQ+0.3
V
—
0.8
V
—
—
V
—
0.4
V
—
10
A
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.
Note
1
2
IOH= -2mA
IOL= -2mA
3
CAPACITANCE
TA = 23°C, f = 1MHz, VCC = 3.3V, VREF=1.4V ± 200mV
Parameter
Symbol
Max
Unit
Input Capacitance (A0-A12)
CIN1
25
pF
Input Capacitance (RAS#,CAS#,WE#)
CIN2
25
pF
Input Capacitance (CKE0)
Input Capacitance (CLK0,CLK2)
CIN3
25
pF
CIN4
13
pF
Input Capacitance (CS0#,CS2#)
CIN5
15
pF
Input Capacitance (DQM0-DQM7)
CIN6
8
pF
Input Capacitance (BA0-BA1)
CIN7
25
pF
Data input/output capacitance (DQ0-DQ63)
COUT
10
pF
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2004
Rev 1
3
White Electronic Designs Corporation • [phone] • www.wedc.com