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參數(shù)資料
| 型號(hào)： | WS1M8-85CM |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | SRAM |
| 英文描述： | 1M X 8 STANDARD SRAM, 85 ns, CDIP32 |
| 封裝： | 0.600 INCH, SIDE BRAZED, CERAMIC, DIP-32 |
| 文件頁(yè)數(shù)： | 3/5頁(yè) |
| 文件大?。?/td> | 273K |
| 代理商： | WS1M8-85CM |
3
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
WS1M8-XCX
November 2002
Rev. 2
PRELIMINARY
White Electronic Designs Corp. reserves the right to change products or specications without notice.
I
Current Source
D.U.T.
C
= 50 pf
eff
I OL
V
1.5V
(Bipolar Supply)
Z
Current Source
OH
AC CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Parameter
Write Cycle
Symbol
-70
-85
-100
Units
Min
Max
Min
Max
Min
Max
Write Cycle Time
tWC
70
85
100
ns
Chip Select to End of Write
tCW
60
75
80
ns
Address Valid to End of Write
tAW
60
75
80
ns
Data Valid to End of Write
tDW
30
40
ns
Write Pulse Width
tWP
50
60
ns
Address Setup Time
tAS
000
ns
Address Hold Time
tAH
555
ns
Output Active from End of Write
tOW1
555
ns
Write Enable to Output in High Z
tWHZ1
25
35
ns
Data Hold Time
tDH
000
ns
1. This parameter is guaranteed by design but not tested.
AC CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Parameter
Read Cycle
Symbol
-70
-85
-100
Units
Min
Max
Min
Max
Min
Max
Read Cycle Time
tRC
70
85
100
ns
Address Access Time
tAA
70
85
100
ns
Output Hold from Address Change
tOH
000
ns
Chip Select Access Time
tACS
70
85
100
ns
Chip Select to Output in Low Z
tCLZ1
555
ns
Chip Disable to Output in High Z
tCHZ1
25
ns
1. This parameter is guaranteed by design but not tested.
AC TEST CIRCUIT
Notes:
VZ is programmable from -2V to +7V.
IOL & IOH programmable from 0 to 16mA.
Tester Impedance Z0 = 75Ω.
VZ is typically the midpoint of VOH and VOL.
IOL & IOH are adjusted to simulate a typical resistive load circuit.
ATE tester includes jig capacitance.
AC Test Conditions
Parameter
Typ
Unit
Input Pulse Levels
VIL = 0, VIH = 3.0
V
Input Rise and Fall
5
ns
Input and Output Reference Level
1.5
V
Output Timing Reference Level
1.5
V
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