MFRC52202HN1,157

• Product Introduction

MFRC522 is a highly integrated read/write IC that enables contactless communication at 13.56 MHz. MFRC522 card reader supports ISO/IEC 14443 A/MIFARE mode.

The MFRC522's internal transmitter can drive read/write antennas designed to communicate with ISO/IEC 14443 A/MIFARE cards and transmit transponders without the need for additional active circuitry. The receiver module provides a powerful and efficient demodulation and decoding circuit for ISO/IEC 14443A/MIFARE compliant cards and transmit transponder signals. The digital module manages the full ISO/IEC 14443 A framing and error detection (parity and CRC) functions.

MFRC522 supports MF1xxS20, MF1xxS70, and MF1xxS50 products. MFRC522 supports two-way contactless communication using higher MIFARE transmission speeds up to 848 kBd.

The following host interfaces are available:

• 串行外设接口(SPI)
• 串行UART（类似RS232，电压电平取决于针脚电压供应）
• I²C总线接口

Differences between versions 1.0 and 2.0

MFRC522 is available in two versions:

• MFRC52201HN1，以下简称1.0版

• MFRC52202HN1，以下简称2.0版

MFRC522 version 2.0 is fully compatible with version 1.0 and offers the following features and improvements:

• 读卡器IC在恶劣条件下具有更高的稳定性

• 额外的定时器预分频器

• RX Multiple设置为1时经过纠正的CRC处理

• Features and Benefits:

  • 高度集成模拟电路进行解调和解码响应
  • 缓冲输出驱动器，可使用最少外部组件连接天线
  • 支持ISO/IEC 14443 A/MIFARE标准
  • 读/写模式下的典型工作距离长达50 mm，具体取决于天线尺寸和调谐情况
  • 读/写模式下支持MF1xxS20、MF1xxS70和MF1xxS50加密
  • 支持ISO/IEC 14443 A较高通信传输速率（最高848 kBd）
  • 支持MFIN/MFOUT
  • 附加内部电源通过MFIN/MFOUT与智能卡IC连接
  • 支持的主机接口
    • 最快10 Mbit/s的SPI
    • 快速模式下最高400 kBd，高速模式下最高3400 kBd的I²C总线接口
    • 最高1228.8 kBd的RS232串行UART，其电压电平取决于针脚电压源
  • FIFO缓冲器可处理64字节发送和接收
  • 灵活的中断模式
  • 通过低功耗功能实现的硬复位
  • 软件关断模式
  • 可编程定时器
  • 用于连接27.12 MHz石英晶体的内部振荡器
  • 2.5 V至3.3 V电源
  • CRC协处理器
  • 可编程I/O引脚
  • 内部自测
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