The MFRC531 is a highly integrated reader IC for contactless communication at13.56 MHz. The MFRC531 reader IC provides:• outstanding modulation and demodulation for passive contactless communication• a wide range of methods and protocols• a small, fully integrated package• pin compatibility with the MFRC500, MFRC530 and SLRC400All protocol layers of the ISO/IEC 14443 A and ISO/IEC 14443 B communicationstandards are supported provided:• additional components, such as the oscillator, power supply, coil etc. are correctlyapplied.• standardized protocols, such as ISO/IEC 14443-4 and/or ISO/IEC 14443 Banticollision are correctly implemented
