YHY5225 13.56MHz Contactless RFID / NFC Reader-Writer Module
The YHY522X series is a high-performance 13.56MHz contactless RFID and NFC reader/writer module built on 600nm CMOS EEPROM technology conforming to the ISO14443 Type A standard. Featuring an integrated PCB antenna, hardware clone UID card detection, and encrypted EEPROM storage for up to 40 key groups, it supports automatic tag scanning, NFC NDEF text commands, and high-speed TTL serial communication up to 230,400 bps for embedded access control and smart terminal applications.
13.56 MHz HF
DC 3.3V (3V–5V Range)
0 to 5 cm Typical
UART (RS232-TTL)
Up to 230,400 bps
58 x 35 x 6 mm
| Product Series | YHY522X Series |
| Device Classification | Contactless 13.56MHz RFID / NFC Read-Write Module with Embedded Antenna |
| Supported Protocols & Tags | ISO14443 Type A, Mifare® Classic 1K, Mifare® Ultralight, NTAG213, and compatible transponders |
| Security & Key Storage | Hardware clone UID card detection; integrated encrypted EEPROM storing up to 40 groups of keys; MIFARE standard encryption support |
| NFC Features & Commands | Direct support for NFC NDEF text commands, automatic tag scanning, and autonomous data upload |
| Communication Interface | RS232 (TTL level) serial interface; default baud rate: 19,200 bps (configurable up to 230,400 bps) |
| Hardware I/O & Indicators | 1x onboard status LED indicator, 2x user-programmable general-purpose I/O pins |
| Mechanical Dimensions | 58 mm x 35 mm x 6 mm (integrated board layout with antenna) |
| Target Applications | Access control systems, NFC smart poster/label interaction, anti-counterfeiting tag verification, smart metering, vending machines, and embedded IoT authentication |
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