MFRC531
The MFRC531 is a member of a new family of highly integrated reader ICs for contactless communication at 13.56 MHz. This family of reader ICs provide:
- 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 SLRC400
All protocol layers of the ISO/IEC 14443 A and ISO/IEC 14443 B communication standards are supported provided. Additional components, such as the oscillator, power supply, coil etc. are correctly applied. Standardized protocols, such as ISO/IEC 14443-4 and/or ISO/IEC 14443 B anti-collision are correctly implemented.
Key features
- Highly integrated analog circuitry for demodulating and decoding card/label response
- Buffered output drivers enable antenna connection using the minimum of external components
- Proximity operating distance up to 100 mm
- Supports both ISO/IEC 14443 A and ISO/IEC 14443 B standards
- Supports the MIFARE Mini, MIFARE 1K, MIFARE 4K protocols
- Contactless communication at MIFARE higher baud rates (up to 424 kBd)
- Crypto1 and secure non-volatile internal key memory
- Pin-compatible with the MFRC500, MFRC530 and the SLRC400
- Parallel microprocessor interface with internal address latch and IRQ line
- SPI compatibility
- Flexible interrupt handling
- Automatic detection of parallel microprocessor interface type
- 64-byte send and receive FIFO buffer
- Hard reset with low power function
- Software controlled Power-down mode
- Programmable timer
- Unique serial number
- User programmable start-up configuration
- Bit-oriented and byte oriented framing
- Independent power supply pins for analog, digital and transmitter modules
- Internal oscillator buffer optimized for low phase jitter enables 13.56 MHz quartz connection
- Clock frequency filtering
- 3.3 V to 5 V operation for transmitter in short range and proximity applications
- 3.3 V or 5 V operation for the digital module