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13.56MHz RFID Mifare® Read/Write Module

▲ Complete Read/Write module with built-in transceiver antenna

▲ Auto checks for presence of a tag and upload ID need no command

▲ Contactless operating frequency 13.56 MHz

▲ Supports ISO14443A /MIFARE® ,Mifare® Classic1K,Mifare® Classic 4K

▲ SPI Interface, baud rate19200bps

▲ Fast data transfer Contactless communication up to 106KHz

▲ Secure Encrypted contactless communication

▲ Ideal for emoney,secure access and fast data collection applications

▲ Typical Operating Distance: 0 – 60 mm

▲ Operating Voltage :DC 3.0-5.5V

▲ Watchdog timer

▲ 1 LED indicator, 3 I/O pins for external use

▲ 512 bytes eeprom

▲ Unique serial number on each device

▲ Size: 58mm × 35mm × 6mm

▲ Weight:10g

YHY502B

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2. Introduction

YHY502BTG is a compact 13.56MHz RFID Read / Write module designed for ISO14443A

standard and supports Mifare® Classic 1K, Mifare® Classic 4K transponders. It is controlled

by external device over UART with simple protocols defined in this sheet.

YHY502BTG can be easily and quickly integrated into RFID applications with very less

effort. Mifare® Classic is a secure memory (1Kbyte, 4KByte) chip/card often called

contactless smart card. The reason it is called smartcard is because it has increment and

decrement functions designed for especially payment systems. Mifare® Classic family of

tags is being used in RFID applications where very high security and fast data collection

systems are required. This family of tags has contactless communication speed up to 106

KHz and uses very strong encryption techniques. If the user want to copy or modify the

content of the Mifare®Classic family of tags then he needs the correct key(s) when it is

protected. As a result Mifare® become ideal for e-money applications, secure access, data

storage and fast data collection systems. Not only limited with these applications but

printed antenna technology makes possible to find very thin and low cost Mifare® tags (e.g.

labels,stickers) so that extending the field of RFID applications.

3. Mifare®Brief Technical Information

For Mifare® tag memory organization and communication principles please refer to Mifare® S50

en.pdf document (Standard Card IC MF1 IC S50) of NXP. Mentioned document gives functional

specification of the IC used in Mifare® 1K tags. Same communication principles are valid for

Mifare® 4K (MF1 IC S70) tags. Documents can be downloaded at http://www.nxp.com.

Communication principles are greatly simplified by YHY502BTG module. When read or write the

card, it just need to send one read/write command with keyA/B for authenticate, the module would

perform request, anticoll and select card itself.

4. Communication Protocols

4.1 Command lists:

This chapter describes the protocol and commands which is used by the YHY502BTG to

communication with host.