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UPC8231 Datasheet(PDF) 96 Page - List of Unclassifed Manufacturers

Part # UPC8231
Description  MT6516 Design Notice V1.0
PDF  212 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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UPC8231 Datasheet(HTML) 96 Page - List of Unclassifed Manufacturers

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96
VUSB
15K ohm
R2
Standard charger
side
D- data line
1.5K ohm
R3
Inside MTK USB
D+ data line
VUSB
Non-standard
charger side
Inside MTK USB
15K ohm
R2
D+ data line
1.5K ohm
R3
D- data line
USB/ Charger Detection (Cont.)
USB/ Charger Detection (Cont.)
▪ Then check whether it is standard or non-standard charger. Turn
on D+/D- internally 15K ohm pull low resistor and D+ 1.5K ohm
pull high resistor at the same time.
– Check D- polarity. If the D- is HIGH, it is standard charger, otherwise it
is a non-standard charger.



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