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參數(shù)資料
| 型號： | WED8L24258V15BC |
| 元件分類： | SRAM |
| 英文描述： | 256K X 24 STANDARD SRAM, 15 ns, PBGA119 |
| 封裝： | BGA-119 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 113K |
| 代理商： | WED8L24258V15BC |
2
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
WED8L24258V
March 2000 Rev. 0
*Stress greater than those listed under "Absolute Maximum Ratings" may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at
these or any other conditions greater than those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
NOTE: For tEHQZ,tGHQZ and tWLQZ see Figure 3.
ABSOLUTE MAXIMUM RATINGS
AC TEST CONDITIONS
RECOMMENDED DC OPERATING CONDITIONS
FIG. 2
FIG. 3
(f = 1.0MHz, VIN = VCC or VSS)
These parameters are sampled, not 100% tested.
DC ELECTRICAL CHARACTERISTICS
TRUTH TABLE
CAPACITANCE
353
5 pF
DOUT
319
VCC
RL = 50
VL = 1.5V
Q
Z0 = 50
Z0 = 50
65 pF
G
E0
E2
E3
W
Mode
Output
Power
X
H
X
Standby
High Z
ICC2,ICC3
H
L
H
Output Deselect
High Z
ICC1
L
H
Read (24 bit)
DOUT
ICC1
L
H
Read
DQ0-7
ICC1
L
H
L
H
Read
DQ8-15
ICC1
L
H
L
H
Read
DQ16-23
ICC1
X
LLLL
Write (24 bit)
DIN
ICC1
X
L
H
L
Write
DQ0-7
ICC1
X
H
L
H
L
Write
DQ8-15
ICC1
X
H
L
Write
DQ16-23
ICC1
Parameter
Sym
Max
Unit
Address Lines
CA
8
pF
Data Lines
CD/Q
10
pF
Write & Output Enable Lines
W, G
8
pF
Chip Enable Lines
E, E2, E3
8
pF
Parameter
Sym
Conditions
Min
Max
Units
10ns
12-15ns
Operating Power Supply Current
ICC1
W= VIL, II/O = 0mA,
500
480
mA
Min Cycle
Standby (TTL) Supply Current
ICC2
E > VIH, VIN < VIL or
150
mA
VIN > VIH, f=MHz
Full Standby CMOS
ICC3
E > VCC-0.2V
90
mA
Supply Current
VIN > VCC-0.2V or
VIN < 0.2V
Input Leakage Current
ILI
VIN = 0V to VCC
±10
A
Output Leakage Current
ILO
V I/O = 0V to VCC
±10
A
Output High Volltage
VOH
IOH = -4.0mA
2.4
V
Output Low Voltage
VOL
IOL = 4.0mA
0.4
V
Input Pulse Levels
VSS to 3.0V
Input Rise and Fall Times
5ns
Input and Output Timing Levels
1.5V
Output Load
Figure 2
Voltage on any pin relative to VSS
-0.5V to 4.6V
Operating Temperature TA (Ambient)
Commercial
0
°C to + 70°C
Industrial
-40
°C to +85°C
Storage Temperature
-55
°C to +125°C
Power Dissipation
1.5 Watts
Output Current
50 mA
Parameter
Sym
Min
Typ
Max
Units
Supply Voltage
VCC
3.135
3.3
3.465
V
Supply Voltage
VSS
0
V
Input High Voltage
VIH
2.2
--
VCC+0.3
V
Input Low Voltage
VIL
-0.3
--
0.8
V
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