RK3288 Hardware Design Guide
25 NFC
25.1 Schematic
NFC technology uses loop-antenna, the basic sensing distance of which is about 2 cm, and
the working current is about 200mA. RSM1 and RSM2 should use the packaging type of 0603.
And the trace length of antenna can’t be shorter than 12mil;
Fig 25-1
Put the NFC antenna on battery and use special absorbing material between them in order
to avoid affecting the sensing distance of antenna.
Fig 25-2
25.2 PCB Layout
Don't use mental shell if NFC technology is used.
NFC is magnetic induction communication. Please use vertical layout to avoid impedance
mismatch caused by the mutual-inductance between L1 and L2, as shown in Fig 25-3.
Summary of Contents for RK32 Series
Page 1: ...RK3288 Hardware Design Guide RK3288 Hardware Design Guide Revision 1 2 Jun 18 2014...
Page 2: ...RK3288 Hardware Design Guide Revision History Date Revision Description 2014 12 15 1 2...
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