MFRC531

Product Summary

The MF RC531 is an ISO 14443 Reader IC. The MF RC531 is member of a new family of highly integrated reader ICs for contactless communication at 13.56 MHz. This reader IC family utilises an outstanding modulation and demodulation concept completely integrated for all kinds of passive contactless communication methods and protocols at 13.56 MHz. The MF RC531 is pin- compatible to the MFRC500, the MF RC530 and the SL RC400.The MF RC531 supports all layers of theISO14443 including the type A and type B communication scheme.

Parametrics

MFRC531 absolute maximum ratings: (1)digital supply voltage: 4.5 to 5.5V; (2)analog supply voltage: 4.5 to 5.5V; (3)transmitter supply voltage: 3.3 to 5.5 V; (4)operating digital supply current: 5mA; (5)operating analog supply current: 25mA; (6)operating buffered antenna driver supply current: 50mA; (7)soft reset via register setting: 1 μA.

Features

MFRC531 features: (1)Highly integrated analog circuitry to demodulate and decode card response; (2)Buffered output drivers to connect an antenna with minimum number of external components; (3)Proximity operating distance (up to 100 mm); (4)Supports contactless communication with higher baudrates up to 424kHz; (5)Crypto1 and secure non-volatile internal key memory; (6)Pin-compatible to the MF RC500, MF RC530 and the SL RC400; (7)Parallel μ-Processor interface with internal address latch and IRQ line; (8)SPI compatible interface; (9)Flexible interrupt handling; (10)Automatic detection of the used μ-Processor interface type; (11)Comfortable 64 byte send and receive FIFObuffer; (12)Hard reset with low power function; (13)Power down mode per software; (14)Programmable timer; (15)Unique serial number; (16)Bit- and byte-oriented framing; (17)Internal oscillator buffer to connect 13.56 MHz quartz, optimised for low phase jitter; (18)3.3 V to 5 V operation for transmitter (antenna driver) in short range and proximity applications; (19)3.3 V or 5V operation for the digital part.

Diagrams