This post explains for the semiconductor PN547.
The Part Number is PN547.
The function of this semiconductor is Near Field Communication Controller.
Manufacturer: NXP
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Description
PN547/C2 is a full feature NFC controller designed for integration in mobile devices and devices compliant with NFC standards.
1. A low PCB footprint and a reduced external Bill of Material by enabling as unique feature the capability to achieve RF standards ( NFC Forum, EMVco card ) with small form factor antenna.
2. An optimized architecture for low-power consumption in different modes ( Standby, low-power polling loop )
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PN547 Datasheet
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