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参数资料
| 型号： | STP2011PGA50 |
| 元件分类： | 参考电压二极管 |
| 英文描述： | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| 中文描述： | 250 的低电流运算，低反向泄露，低噪声稳压二极管 |
| 文件页数： | 11/20页 |
| 文件大小： | 221K |
| 代理商： | STP2011PGA50 |
11
32-bit SBus Master I/O Controller
Master I/O
STP2000QFP
July 1997
AC Characteristics: SCSI TIming
Signal #
Parameter
Conditions
Min
Max
Units
24
Clock period (t
CP
)
Synchronization latency
25
83.3
ns
25
t
CL
t
CL
+ t
CP
ns
With FASTCLK bit reset
26
Clock frequency, asynchronous
[1]
Clock frequency, synchronous
[1]
12
25
MHz
27
20
25
MHz
28
Clock high
14.58
0.65 x t
CP
0.65 x t
CP
ns
29
Clock low (t
CL
)
14.58
ns
With FASTCLK bit set
26
Clock frequency, asynchronous
[1]
Clock frequency, synchronous
[1]
20
40
MHz
27
38
40
MHz
28
Clock high
0.40 x t
CP
0.40 x t
CP
0.60 x t
CP
0.60 x t
CP
ns
29
Clock low (t
CL
)
ns
Asynchronous SCSI
30
Data setup to SCSI_ACK/SCSI_REQ low
60
–
ns
31
Data hold from SCSI_REQ high/SCSI_ACK low
FIFO is not empty
5
–
ns
32
SCSI_ACK low to SCSI_REQ high
–
50
ns
33
SCSI_ACK high to SCSI_REQ low
(data already setup)
FIFO is not full.
–
45
ns
34
SCSI_REQ high to SCSI_ACK high
–
50
ns
35
SCSI_REQ low to SCSI_ACK low
(data already setup)
FIFO is not full.
–
50
ns
36
Data setup to SCSI_REQ/SCSI_ACK low
0
–
ns
37
Data hold from SCSI_REQ/SCSI_ACK low
–
18
ns
Synchronous SCSI - Normal SCSI
38
Data setup to SCSI_REQ/SCSI_ACK low
55
–
ns
39
Data hold from SCSI_REQ/SCSI_ACK low
100
–
ns
40
SCSI_REQ/SCSI_ACK assertion period
90
–
ns
41
SCSI_REQ/SCSI_ACK negation period
90
–
ns
Synchronous SCSI - Fast SCSI
38
Data setup to SCSI_REQ/SCSI_ACK low
25
–
ns
39
Data hold from SCSI_REQ/SCSI_ACK low
35
–
ns
40
SCSI_REQ/SCSI_ACK assertion period
30
–
ns
41
SCSI_REQ/SCSI_ACK negation period
30
–
ns
This Material Copyrighted by Its Respective Manufacturer
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PDF描述 |
|---|---|
| STP2012PQFP | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
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相关代理商/技术参数 |
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|---|---|
| STP2012PQFP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DMA Controller |
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