This module adopts cv520 chip imported from NXP

[delivery list]
1. One cv520 module;
2. One standard S50 blank card;
3. One S50 special-shaped card (key ring shape as shown in the figure);
4. One straight row pin and one curved row pin respectively;
Note: please contact the customer service for the download address for the relevant detailed technical information and development routines.
Download: http://pan.baidu.com/s/1kUPRnkN
It mainly includes the following contents:
A. Supporting reference materials;
B. Mainstream processor (including MSP430F149) for the module application C program;
[introduction to cv520 chip]
Cv520 is a highly integrated read-write card chip used in 13.56MHz contactless communication. It is a low-voltage, low-cost, small size contactless read-write card chip launched by NXP company for the application of "three meters". It is a good choice for the research and development of intelligent instruments and portable handheld devices. Cv522 fully integrates all kinds of passive non-contact communication modes and protocols at 13.56MHz by using advanced modulation and demodulation concepts. Support 14443a compatible transponder signal. The digital part processes iso14443a frame and error detection. In addition, it also supports fast crypto1 encryption algorithm to verify Mifare series products. Cv520 supports higher speed contactless communication of Mifare series, with bidirectional data transmission rate up to 424kbit / s. As a new member of 13.56MHz high integration read-write card family, cv520 has many similarities with MF RC500 and MF rc530, but also has many characteristics and differences. It uses SPI mode to communicate with the host computer, which is helpful to reduce the wiring, reduce the volume of PCB board and reduce the cost.

[introduction to RFID module]

CV520模块采用NXP CV520原装芯片设计读卡电路，使用方便，成本低廉，适用于设备开发、读卡器开发等高级应用的用户、需要进行射频卡终端设计/生产的用户。本模块可直接装入各种读卡器模具。模块采用电压为3.3V,通过SPI接口简单的几条线就可以直接与用户任何CPU主板相连接通信,可以保证模块稳定可靠的工作、读卡距离远；Cv520 module adopts NXP cv520 original chip to design card reading circuit, which is convenient to use and low-cost. It is suitable for advanced application users such as equipment development, card reader development, and users who need to design / produce RF card terminal. The module can be directly loaded into various reader molds. The voltage of the module is 3.3V, and it can directly communicate with any CPU motherboard of the user through a few simple lines of SPI interface, which can ensure the stable and reliable operation of the module and the long distance of card reading;

Brief introduction to electrical parameters

Working current: 13-26ma/ DC 3.3V
Idle current: 10-13ma/ DC 3.3V
Dormancy current: < 80ua
Peak current: < 30mA
Operating frequency: 13.56MHz
Supported card types: Mifare1 S50, Mifare1 S70, Mifare ultralight, Mifare pro, Mifare desk
Physical characteristics of products: size: 40mm × 60mm
Ambient working temperature: 20-80 degrees C
Ambient storage temperature: 40-85 degrees C
Relative humidity of environment: 5% - 95%

[SPI parameters of module interface]

Data transmission rate: maximum 10mbit / S