RC522

Features:

• Highly integrated analog circuitry to demodulate and decode responses
• Buffered output drivers for connecting an antenna with the minimum number of external components
• Compatible with ISO/IEC 14443 A/MIFARE
• Typical operating distance in Read/Write mode up to 50 mm depending on the antenna size and tuning
• Supports M1 encryption in Read/Write mode
• Support ISO/IEC 14443A higher transfer speed communication up to 848 kbit/s
• Host interface selectable: UART,SPI and I2C mode
• Max frame size up to 64 bytes
• Hard reset with low power function
• Power-down by software mode
• Programmable timer
• Internal oscillator to connect a 27.12 MHz crystal
• Embedded hardware CRC and receiver timer
• Interrupt request output
• 2.5 V to 3.3 V power supply
• Programmable I/O pins
• QFN32 package