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PC97307 Datasheet(PDF) 207 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC97307
Description  PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
PDF  218 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC97307 Datasheet(HTML) 207 Page - National Semiconductor (TI)

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Device Description
www.national.com
13.3.17 Enhanced Parallel Port 1.7 Timing
TABLE 13-53. Enhanced Parallel Port 1.7 Timing Parameters
FIGURE 13-24. Enhanced Parallel Port 1.7 Timing
a. The design guarantees that WRITE will not change from low to high before DSTRB, or ASTRB, goes from low
to high.
b. D7-0 is stable 15 nsec before WR becomes active.
Symbol
Parameter
Notes
Min
Max
Unit
tWW17
WRITE Active or Inactive from WR Active or Inactive
45
nsec
tWST17
DSTRB or ASTRB Active or Inactive from WR or RD Active or Inactive
a
45
nsec
tWEST17
DSTRB or ASTRB Active after WRITE Becomes Active
0
nsec
tWPD17h
PD7-0 Hold after WRITE Becomes Inactive
50
nsec
tHRW17
IOCHRDY Active or Inactive after WAIT Becomes Active or Inactive
40
nsec
tWPDS17
PD7-0 Valid after WRITE Becomes Active
b
15
nsec
tEPDW17
PD7-0 Valid Width
80
nsec
tEPD17h
PD7-0 Hold after DSTRB or ASTRB Becomes Inactive
0
nsec
tZWS17a
ZWS Valid after WR or RD Active
45
nsec
tZWS17h
ZWS Hold after WR or RD Inactive
0
nsec
tWW17
WR
RD
D7-0
WRITE
DSTRB
ASTRB
PD7-0
WAIT
IOCHRDY
Valid
Valid
tWEST17
tWST17
tWPDS17
tHRW17
tHRW17
tWST17
tWW17
tWST17
tWPD17h
tWST17
tEPD17h
tEPDW17
or
tHRW17
tZWS17a
tZWS17h
tZWS17a
tZWS17h
ZWS



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