NXPMFRC52213.56MHzRFID无接触读写方案  2012/3/1

         NXP公司的MFRC522是13.56 MHz 无接触通信的高度集成的读/写IC,支持ISO/IEC14443 A/MIFARE模式,两个方向的传输速率高达848 kBd. MFRC522工作电压2.5V到3.3V,提供SPI,串行UART和I2C总线接口,具有CRC协处理器和可编程I/O引脚,内部有自测试.本文介绍MFRC522主要特性, 简化和详细方框图, 读/写模式, 总线接口图以及典型应用方框图.

MFRC522: Contactless reader IC

The MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56 MHz. The MFRC522 reader supports ISO/IEC 14443 A/MIFARE mode.The MFRC522’s internal transmitter is able to drive a reader/writer antenna designed to communicate with ISO/IEC 14443 A/MIFARE cards and transponders without additional active circuitry. The receiver module provides a robust and efficient implementation for demodulating and decoding signals from ISO/IEC 14443 A/MIFARE compatible cards and transponders. The digital module manages the complete ISO/IEC 14443 A framing and error detection (parity and CRC) functionality.

The MFRC522 supports MF1xxS20, MF1xxS70 and MF1xxS50 products. The MFRC522 supports contactless communication and uses MIFARE higher transfer speeds up to 848 kBd in both directions.

The following host interfaces are provided:

• Serial Peripheral Interface (SPI)

• Serial UART (similar to RS232 with voltage levels dependant on pin voltage supply)

• I2C-bus interface

MFRC522主要特性:

Highly integrated analog circuitry to demodulate and decode responses

Buffered output drivers for connecting an antenna with the minimum number of external components

Supports ISO/IEC 14443 A/MIFARE

Typical operating distance in Read/Write mode up to 50 mm depending on the antenna size and tuning

Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode

Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd

Supports MFIN/MFOUT

Additional internal power supply to the smart card IC connected via MFIN/MFOUT

Supported host interfaces

SPI up to 10 Mbit/s

I2C-bus interface up to400kBd in Fast mode, up to 3400 kBd in High-speed mode

与《NXPMFRC52213.56MHzRFID无接触读写方案》相关列表

• · 今年第一季度电子信息产品出口同比增长20% 2012/3/1
• · LinearLTC3775高效降压DC转换方案 2012/3/1
• · TITPS3860x0四路电压监视方案 2012/3/1
• · TI手提超声系统DSP解决方案 2012/3/1
• · ADIADP2116多功能同步DC电源转换方案 2012/3/1
• · 一季全球半导体收入增长 2012/3/1
• · 2007年中国半导体照明产业数据 2012/3/1
• · HittiteHMC713LP3E50MHz-8GHz功率检测方案 2012/3/1