L293D Motor Control Shield 4-Channel Stepper Motor Driver Board

RC522 RFID Card Reader Features and Benefits

• Highly integrated analog circuitry to demodulate and decode responses
• Buffered output drivers for connecting an antenna with the minimum number of external components
• Supports ISO/IEC 14443 A/MIFARE and NTAG
• The typical operating distance in Read/Write mode is up to 50 mm depending on the antenna size and tuning
• Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode
• Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd
• Supports MFIN/MFOUT
• Additional internal power supply to the smart card IC connected via MFIN/MFOUT
• Supported host interfaces
• SPI up to 10 Mbit/s
• I 2C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode
• RS232 Serial UART up to 1228.8 kBd, with voltage levels dependent on the pin voltage supply
• FIFO buffer handles 64-byte send-and-receive
• Flexible interrupt modes
• Hard reset with low power function
• Power-down by software mode
• Programmable timer
• Internal oscillator for connection to 27.12 MHz quartz crystal
• 2.5 V to 3.3 V power supply
• CRC coprocessor
• Programmable I/O pins
• Internal self-test