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參數(shù)資料
| 型號： | ST162552 |
| 廠商： | Exar Corporation |
| 英文描述： | DUAL ASYNCHRONOUS RECEIVER/TRANSMITTER WITH FIFOs |
| 中文描述： | 雙異步接收器/發(fā)送器與FIFO的 |
| 文件頁數(shù)： | 14/28頁 |
| 文件大?。?/td> | 121K |
| 代理商： | ST162552 |
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3-148
ST16C2552
S
Symbol
Parameter
Limits
Typ
Units
Conditions
Min
Max
AC ELECTRICAL CHARACTERISTICS
T
A
=0° - 70° C, Vcc=5.0 V ± 10% unless otherwise specified.
T
1
T
2
T
3
T
8
T
9
T
12
T
13
T
14
T
15
T
16
T
Tw
T
19
T
21
T
23
T
24
T
25
Tr
T
26
T
28
T
29
Clock high pulse duration
Clock low pulse duration
Clock rise/fall time
Chip select setup time
Chip select hold time
Data set up time
Data hold time
IOW* delay from chip select
IOW* strobe width
Chip select hold time from IOW*
Write cycle delay
Write cycle=T
15
+T
17
Data hold time
IOR* delay from chip select
IOR* strobe width
Chip select hold time from IOR*
Read cycle delay
Read cycle=T
+T
Delay from IOR* to data
Delay from IOW* to output
Delay to set interrupt from MODEM
input
Delay to reset interrupt from IOR*
Delay from stop to set interrupt
Delay from IOR* to reset interrupt
Delay from initial INT reset to transmit
start
Delay from stop to interrupt
Delay from IOW* to reset interrupt
Delay from initial Write to interrupt
Delay from stop to set RxRdy
Delay from IOR* to reset RxRdy
Delay from IOW* to set TxRdy
Delay from start to reset TxRdy
Reset pulse width
Baud rate devisor
20
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
10
0
0
15
15
10
50
0
55
105
15
10
65
0
55
115
35
50
70
100 pF load
100 pF load
100 pF load
T
30
T
31
T
32
T
33
70
1
200
24
ns
ns
ns
*
100 pF load
100 pF load
100 pF load
8
T
34
T
35
T
36
T
44
T
45
T
46
T
47
T
R
N
100
175
24
1
100
195
8
ns
ns
*
16
ns
ns
*
ns
10
1
2
16
-1
Note 1:
* = Baudout* cycle
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