Cv520 domestic replacement of ci521 13.56MHz contactless reader chip

Ci521PIN Yes PIN Direct replacement CV520, Hardware and software are compatible , Support reading and writing A Card and B card .

Ci521 It's a highly integrated , Working in 13.56MHz The non-contact reader chip , Reader support ISO/IEC14443A/B/MIFARE. No need for peripheral circuits , The internal transmitter can drive the reader / writer antenna and ISO/IEC 14443A/B/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/B/MIFARE Compatible card and transponder signal . Digital modules handle complete ISO/IEC 14443 A/B Frame and error detection ( Parity and CRC).

Ci521 Support MIFARE product .

Ci521 Support for contactless communication , And MIFARE The serial two-way communication rate is as high as 848kBd.

Ci521 Provide SPI( Serial peripheral interface ) Host interface .

 

Parameters and characteristics

• Highly integrated analog circuits , Demodulation and decoding response

• Buffered output driver , Use a minimum of peripheral elements to connect to the antenna

• Support ISO/IEC 14443 A/B/MIFARE

• The operating distance of the reader writer mode depends on the size and number of turns of the antenna , The typical operating distance is 50mm,

• Support... In reader / writer mode MIFARE Series Card

• Support ISO/IEC 14443 A/B/Mifare Higher rate communication , Highest up to 848kBd

• Support SPI Interface , The communication rate is up to 10Mbit/s

•64 Byte sending and receiving FIFO buffer

• Flexible interrupt mode

• Low power hard reset function

• Software power down mode

• Programmable timer

• Internal oscillator , Connect 27.12MHz Quartz crystal

•2.3V to 3.6V Supply voltage CRC Coprocessor

• working temperature -25℃+85℃

• Size 5mm×5mm encapsulation QFN32

application
intelligence “ Three watches “

Intelligent door lock
Public transport terminals
Portable handheld devices
Contactless public telephone