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PC87322VF bảng dữ liệu(PDF) 72 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện PC87322VF
Giải thích chi tiết về linh kiện  Floppy Disk Controller with Dual UARTs, Enhanced Parallel Port, and IDE Interface
PDF  84 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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PC87322VF bảng dữ liệu(HTML) 72 Page - National Semiconductor (TI)

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90 Device Description (Continued)
929 Reset Timing
Symbol
Parameter
Min
Max
Units
tRW
Reset Width (Note 1)
100
ns
tRC
Reset to Control Inactive
300
ns
Note 1
The software reset pulse width is 100 ns The hardware reset pulse width with an external 10 kX pull-up or pull-down resistor on the MFM pin is 100 ns
When using the internal pull-up resistor on the MFM pin the hardware reset pulse width is 170 ns (assumes no pF load)
TLC11870 – 39
Note 2
DRQ and IRQ6 will be TRI-STATE after time tRC when in the AT or Model 30 mode
FIGURE 9-9 Reset Timing
9210 Write Data Timing
Symbol
Parameter
Min
Max
Units
tHDH
HDSEL Hold from WGATE Inactive
750
m
s
tHDS
HDSEL Setup to WGATE Active
100
m
s
tWDW
Write Data Pulse Width
Table 9-2
ns
TABLE 9-2 Minimum tWDW Values
Data Rate
tDRP
tWDW
tWDW Value
Units
1 Mbs
1000
2 c tICP
250
ns
500 kbs
2000
2 c tICP
250
ns
300 kbs
3333
2 c tICP
375
ns
250 kbs
4000
2 c tICP
500
ns
TLC11870 – 40
FIGURE 9-10 Write Data Timing
72



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