Ci521 domestic 13.56MHz reader chip replaces cv520 compatible

Ci521 Is highly integrated , Working in 13.56MHz The non-contact reader chip , Reader support ISO/IEC 14443 A/B/MIFARE. No need for peripheral circuits ,Ci521 The internal transmitter can drive the reader antenna and ISO/IEC 14443 A/B/MIFARE The card communicates with the transponder . The receiver module provides a powerful and efficient circuit , To solve Modulation 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 ( Odd and even 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 .

Compatible alternative MFRC520
• 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
• encapsulation ：QFN32（5mm5mm0.75mm）

• intelligence “ Three watches ‘’
• Public transport terminals
• Portable handheld devices
• Contactless public telephone