The MF RC522 is part of a family of highly integrated read/write cards for 13.56MHz contactless communication. It is NXP for the "three tables" application
The introduction of a low-voltage, low-cost, small contactless read-write card chip is a good choice for the development of smart meters and portable handheld devices.
The MF RC522 utilizes advanced modulation and demodulation concepts to fully integrate all types of passive contactless communication methods and protocols at 13.56MHz. Multi-layer applications that support ISO14443A. Its internal transmitter section drives the reader antenna to communicate with ISO 14443A/MIFARE cards and transponders without additional circuitry. The receiver section provides a robust and efficient demodulation and decoding circuit for processing ISO14443A-compliant transponder signals. The digital part handles ISO14443A frames and error detection (parity &CRC). In addition, it supports fast CRYPTO1 encryption algorithms for authenticating MIFARE family products. The MFRC522 supports MIFARE?higher speed contactless communication with bidirectional data rates of up to 424kbit/s.
As a new member of the 13.56MHz highly integrated read/write card family of chips, the MF RC522 has many similarities, features and differences with the MF RC500 and MF RC530. It adopts serial communication with less connection to the host, and can choose one of SPI, I2C or serial UART (similar to RS232) modes according to different user needs, which is conducive to reducing the connection, reducing the PCB board size, and reducing costs.
Features◆Highly integrated modulation and demodulation circuit;
◆A small number of external devices can be used to connect the output drive stage to the antenna;
◆ Support ISO/IEC 14443 TypeA and MIFARE® communication protocols;
◆ The communication distance with ISO 14443A/MIFARE® in reader mode is up to 50mm, depending on the length and tuning of the antenna.
◆ Support ISO 14443 212kbit/s and 424kbit/s higher transmission rate communication.
Support MIFARE® Classic encryption;
◆Supported host interface:
-10Mbit/s SPI interface
-I2C interface, the rate of fast mode is 400kbit/s, and the rate of high-speed mode is 3400kbit/s
- Serial UART, transmission rate up to 1228.8kbit/s, frame depends on RS232 interface, voltage level depends on the supplied pin voltage
◆64 bytes of send and receive FIFO buffers;
◆ Flexible interrupt mode;
◆ Programmable timer.
◆ With hardware power down, software power down and transmitter power down 3 power saving modes, the first two modes are similar to MFRC500 and CL RC400, its unique "transmitter power down" can turn off the internal antenna driver, that is, turn off the RF field;
◆Built-in temperature sensor to automatically stop RF emission when the chip temperature is too high;
◆ Adopt independent multiple groups of power supply to avoid mutual interference between modules and improve the stability of work;
◆With CRC and parity functions, the 16-bit long CRC computing polynomial of the CRC coprocessor is fixed: x16+x12+x5+1, in line with ISO/1EC14443 and CCTITT protocols;
◆ Internal oscillator, connected to 27.12MHz crystal;
◆2.5~3.3V low voltage and low power consumption design;
◆Working temperature range -30~+85°C;
◆5mm×5mm×0.85mm ultra-small size.
EDIT ARTICLE: The MF-RC522 is suitable for a variety of applications based on the ISO/IEC 14443A standard that require low-cost, small-size, high-performance, and single-supply contactless communication.
▲Three tables;
▲ On-board unit;
▲Public transportation terminals;
▲Portable handheld devices;
▲Contactless public telephone.//www.chip100.com/