PN532 NFC RFID Module V3

NFC is a popular technology in recent years. We often heard this word while smart phone company such as Samsung or HTC
introduces their latest high-end phones. Almost all the high-end phones in the market support NFC. NFC is based on the PN532 chip for near field communication at 13.56 MHz.
Near field communication (NFC) is a set of standards for smartphones and similar devices to establish radio communication with
each other by touching them together or bringing them into close proximity, usually no more than a few centimeters.
For electronics geeks, we also want to use NFC technology to make our own things. So we build this NFC RFID module. This module is
built around NXP PN532. NXP PN532 is very popular in NFC area. And the company offers much technology document to help
developers. We developed this module based on the official document. To make things easier, we also build library for this module

Features
1. Support II2, SPI and HSU (High Speed UART)
2. RFID reader/writer mode support
 Mifare 1k, 4k, Ultralight, and DesFire cards
 ISO/IEC 14443-4 cards such as CD97BX, CD light, DesFire, P5CN072 (SMX)
 Innovision Jewel cards such as IRT5001 card
 FeliCa cards such as RCS_860 and RCS_854
3. Plug and play, Arduino compatible
4. Built in PCB Antenna, with 5cm~7cm communication distance
5. On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI
6. Work as RFID reader/writer
7. Work as 1443-A card or a virtual card
8. Support NFC with Android phone
9. Small size: 43mm*41mm*4mm