آر اف (فرکانس رادیویی) و بی‌سیم آی‌سی آر‌اف‌آی‌دی و کنترل دسترسی

Product Attributes

Introduction

The MFRC522 is a highly integrated reader/writer IC designed for contactless communication at 13.56 MHz. It supports the ISO/IEC 14443 A/MIFARE and NTAG standards. The internal transmitter is capable of driving a reader/writer antenna designed for communication with ISO/IEC 14443 A/MIFARE cards and transponders without additional active circuitry. The receiver module provides a robust and efficient solution for demodulating and decoding signals from ISO/IEC 14443 A/MIFARE-compatible cards and transponders. In addition, the digital module handles comprehensive management of ISO/IEC 14443 A framing and error detection functions, including parity and CRC. The IC is compatible with MF1xxS20, MF1xxS70, and MF1xxS50 products. It supports contactless communication and leverages MIFARE bidirectional higher transfer speeds of up to 848 kBd.

Features

• Highly integrated analog circuitry for demodulation and decoding of responses
• Buffered output drivers for antenna connection with minimal external components
• ISO/IEC 14443 A/MIFARE and NTAG support
• Typical operating distance up to 50 mm in read/write mode, depending on antenna size and tuning
• MF1xxS20, MF1xxS70, and MF1xxS50 encryption support in read/write mode
• ISO/IEC 14443 A higher transfer speed communication up to 848 kBd
• MFIN/MFOUT support
• Additional internal power supply for connected smart card ICs via MFIN/MFOUT
• Supported host interfaces: SPI up to 10 Mbit/s; I2C bus interface up to 400 kBd in fast mode and up to 3400 kBd in high-speed mode; RS232 serial UART up to 1228.8 kBd, voltage levels dependent on pin supply voltage
• 64-byte FIFO buffer for transmit and receive
• Flexible interrupt modes
• Hard reset with low-power function
• Power-down via soft mode
• Programmable timer
• Internal oscillator for 27.12 MHz quartz crystal connection
• 2.5 V to 3.3 V supply voltage
• CRC coprocessor
• Programmable I/O pins
• Internal self-test

Applications

• Contactless card reader front-end