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PC87322VF Datasheet(PDF) 73 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87322VF
Description  Floppy Disk Controller with Dual UARTs, Enhanced Parallel Port, and IDE Interface
PDF  84 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87322VF Datasheet(HTML) 73 Page - National Semiconductor (TI)

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90 Device Description (Continued)
9211 Drive Control Timing
Symbol
Parameter
Min
Max
Units
tDRV
DR0 – DR3 MTR0 – MTR3 from End of WR
100
ns
tDST
DIR Setup to STEP Active
6
m
s
tIW
Index Pulse Width
100
ns
tSTD
DIR Hold from STEP Inactive
tSTR
ms
tSTP
STEP Active High Pulse Width
8
m
s
tSTR
STEP Rate Time (see Table 4-14)
1
ms
TLC11870 – 41
FIGURE 9-11 Drive Control Timing
9212 Read Data Timing
Symbol
Parameter
Min
Max
Units
tRDW
Read Data Pulse Width
50
ns
TLC11870 – 42
FIGURE 9-12 Read Data Timing
9213 IDE Timing
Symbol
Parameter
Min
Max
Units
tAD
Delay from Address to Disable Strobe
25
ns
tAE
Delay from Address to Enable Strobe
25
ns
TLC11870 – 43
FIGURE 9-13 IDE Timing
73



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