ST78C34 查看數據表（PDF） - Exar Corporation
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ST78C34 Datasheet PDF : 21 Pages
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ST78C34
AC ELECTRICAL CHARACTERISTICS
T =0° - 70° C, Vcc=5.0 V ± 10% unless otherwise specified.
A
Symbol
Parameter
T1
Clock high pulse duration
T2
Clock low pulse duration
T3
Clock rise/fall time
T8
Chip select setup time
T9
Chip select hold time
T12
Data setup time
T13
Data hold time
T14
-IOW delay from chip select
T15
-IOW strobe width
T16
Chip select hold time from -IOW
T17
Write cycle delay
Tw
Write cycle=T15+T17
T19
Data hold time
T21
-IOR delay from chip select
T23
-IOR strobe width
T24
Chip select hold time from -IOR
T25
Read cycle delay
Tr
Read cycle=T23+T25
T26
Delay from -IOR to data
T39
-ACK pulse width
T40
PD7 - PD0 setup time
T41
PD7 - PD0 hold time
T42
Delay from -ACK low to interrupt low
T43
Delay from -IOR to reset interrupt
Limits
Units
Min Typ Max
Conditions
50
ns
50
ns External clock
10
ns
5
ns
0
ns
10
ns
10
ns
10
ns
50
ns
0
ns
55
ns
105
ns
10
ns
10
ns
65
ns
0
ns
55
ns
115
ns
35
ns 100 pF load
75
ns
10
ns
25
ns
5
ns
5
ns
Rev. 3.00
6-13
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