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PC87570 Datasheet(PDF) 39 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87570
Description  PC87570 Keyboard and Power Management Controller
PDF  168 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87570 Datasheet(HTML) 39 Page - National Semiconductor (TI)

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Bus Interface Unit (BIU)
39
www.national.com
CLK
A0-18
SEL0-1,
D0-15
RD
WR0-1
Normal Read
Late Write
Normal Read
T1
T2
T1
T2
T1
T2
Bus State
In
Out
In
BST0-2
SELIO
Figure 3-5. Late Write Bus Cycle Between Normal Read Bus Cycles with 0 Wait
CLK
A0-18
SELn
D0-15
RD
WR0-1
Bus State
T1
TIW
T2
Thold
BST0-2
Figure 3-6. Late Write Bus Cycle with 1 Internal Wait and 1 Hold
Out



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