MF RC522 is a member of the highly integrated read-write card family of chips used in 13.56MHz contactless communication. It is a low voltage, low cost and small size non-contact reading and writing card chip launched by NXP for the "three meter" application. It is a good choice for the research and development of intelligent meters and portable handheld devices.
- Support ISO 14443A/MIFARE, the internal transmitter part of MFRC522 can drive the reader/writer antenna to communicate with ISO 14443A/MIFARE cards and transponders without additional circuits
- Can implement the functions of various different host interfaces: SPI interface, serial UART (similar to RS232, the voltage level depends on the supplied pin voltage), I2C interface
- 64-byte transmit and receive FIFO buffers
- Flexible interrupt mode
- Programmable timer
- Internal oscillator with 27.12MHz crystal connected
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