Cv520 domestic card reader chip instead of ci520 contactless reader

Ci520 Is highly integrated , Working in 13.56 MHz The non-contact reader chip , Reader support ISO/IEC 14443 A/MIFARE. No need for peripheral circuits ,Ci520 The internal transmitter can drive the reader antenna and ISO/IEC 14443 A/MIFARE The card communicates with the transponder . The receiver module provides a powerful and efficient circuit , Used for demodulation and decoding ISO/IEC 14443 A /MIFARE Compatible card and transponder signal . Digital modules handle complete ISO/IEC 14443 A Frame and error detection （ Parity and CRC）.
Ci520 Support MIFARE product .Ci520 Support for contactless communication , And MIFARE The serial two-way communication rate is as high as 848 kBd. Provide SPI（ Serial peripheral interface ） Host interface .

Analog interface deals with the modulation and demodulation of analog signals . Non contact UART Deal with the protocol requirements for cooperative communication with the host .FIFO Buffer ensures host and contactless UART Fast and convenient communication between .
Equipped with SPI The host interface meets the needs of users .

◆ intelligence “ Three watches ”
◆ Portable handheld devices
◆ Public transport terminals
◆ Contactless public telephone