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PC87309VLJ датащи(PDF) 181 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали PC87309VLJ
подробное описание детали  PC87309 SuperI/O Plug and Play Compatible Chip in Compact 100-Pin VLJ Packaging
PDF  192 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87309VLJ датащи(HTML) 181 Page - National Semiconductor (TI)

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Device Specifications
181
www.national.com
10.3.11 ECP DMA Timing
1. One DMA transaction takes six clock cycles.
2. tCP is defined in Section 10.3.2 on page 171.
3. Only in case of pending DRQ.
4. The active edge of RD or WR and TC is recognized only when DACK is active.
Symbol
Parameter
Min
Max
Unit
tKIP
DACK Inactive Pulse Width
25
nsec
tKKP
DACK Active Pulse Width
65
nsec
tKQP
DACK Active Edge to DRQ Inactive12
65 + (6 x 32 x tCP)
nsec
tQKP
DRQ to DACK Active Edge
10
nsec
tQPP
DRQ Period
330
nsec
tQQP
DRQ Inactive Non-Burst Pulse Width
300
4003
nsec
tQRP
DRQ to RD, WR Active
15
nsec
tRQP
RD, WR Active Edge to DRQ Inactive4
65
nsec
tTQP
TC Active Edge to DRQ Inactive
75
nsec
tTT
TC Active Pulse Width
50
nsec
tQKP
tKQP
tQPP
tTT
tKKP
tQRP
tQQP
tKIP
tRQP
tTQP
DRQ
DACK
RD, WR
TC



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