EDI88257C 查看數據表（PDF） - White Electronic Designs => Micro Semi
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EDI88257C Datasheet PDF : 6 Pages
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EDI88257C
AC CHARACTERISTICS – READ CYCLE
(VCC = 5.0V, VSS = 0V, TA = -55°C to +125°C))
Parameter
Symbol
JEDEC
Alt.
Read Cycle Time
tAVAV
tRC
Address Access Time
tAVQV
tAA
Chip Select Access Time
tELQV
tACS
Chip Select to Output in Low Z (1)
tELQX
tCLZ
Chip Disable to Output in High Z (1)
tEHQZ
tCHZ
Output Hold from Address Change
tAVQX
tOH
Output Enable to Output Valid
tGLQV
tOE
Output Enable to Output in Low Z (1)
tGLQX
tOLZ
Output Disable to Output in High Z (1)
tGHQZ
tOHZ
1. This parameter is guaranteed by design but not tested.
70ns
Min
Max
70
70
70
10
25
10
35
5
0
25
85ns
Min
Max
85
85
85
10
30
10
45
5
0
30
AC CHARACTERISTICS – WRITE CYCLE
(VCC = 5.0V, VSS = 0V, TA = -55°C to +125°C)
Parameter
Symbol
JEDEC Alt.
Write Cycle Time
tAVAV
tWC
Chip Select to End of Write
tELWH
tCW
tELEH
tCW
Address Setup Time
tAVWL
tAS
tAVEL
tAS
Address Valid to End of Write
tAVWH
tAW
tAVEH
tAW
Write Pulse Width
tWLWH
tWP
tWLEH
tWP
Write Recovery Time
tWHAX
tWR
tEHAX
tWR
Data Hold Time
tWHDX
tDH
tEHDX
tDH
Write to Output in High Z (1)
tWLQZ
tWHZ
Data to Write Time
tDVWH
tDW
tDVEH
tDW
Output Active from End of Write (1)
tWHQX
tWLZ
1. This parameter is guaranteed by design but not tested.
70ns
Min
Max
70
60
60
0
0
65
65
50
50
0
0
0
0
0
25
40
30
5
85ns
Min
Max
85
70
70
0
0
70
70
55
55
0
0
0
0
0
30
40
35
5
100ns
Min
Max
100
100
100
10
30
10
50
5
0
30
100ns
Min
Max
100
80
80
0
0
80
80
60
60
0
0
0
0
0
30
40
40
5
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
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