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UPD72012 Datenblatt(PDF) 31 Page - NEC

Teilenummer UPD72012
Bauteilbeschribung  HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
PDF  36 Pages
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Hersteller  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD72012 Datenblatt(HTML) 31 Page - NEC

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Data Sheet S13918EJ3V0DS
31
µPD72012
CS Timing Chart
500
µsec
HUB power supply
Up port D+ line
PP pin output
CS pin input
CS pin operation
region
Power supply ON
Bus power: Up port connection
Self-power: Power supply ON
BUS reset
Port power
supply ON
DEVICE
connection
inrush current
Overcurrent
generation
Output cut-off
CS active period
CS detection
delay time
500
µsec
500
µsec
500
µsec
Remark
The active period of the CS pin is in effect only when the PP pin is ON.
There is a delay time of approximately 500
µsec duration at the CS pin.



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