The MFRC531 is part of the latest series of highly integrated modelsCard reader ICfor contactless communication at 13.56 MHz. This series of reader ICs provides:
- Excellent modulation and demodulation performance for passive contactless communication
- Various methods and protocols
- Fully integrated in a small package
- Pin compatible with MFRC500, MFRC530, and SLRC400
Communication standards supporting all ISO/IEC 14443 A and ISO/IEC 14443 B protocol layers:
- Properly install additional components such as oscillators, power supplies, coils, etc.
- Proper deployment of standardized protocols such as ISO/IEC 14443-4 and/or ISO/IEC 14443 B collision prevention
Use of this NXP® semiconductor device that complies with ISO/IEC 14443 B may infringe third party patent rights.
The MFRC531 supports contactless communication using MIFARE's higher baud rate (see section 9.12 on page 38). The receiver module provides a robust and efficient demodulation/decoding circuit scheme that is compatible with transponder signals (see section 9.10 on page 32).
The digital module manages the complete SO/IEC 14443 standard framing and error detection (parity and CRC). In addition, it supports fast MIFARE security algorithms for certifying MIFARE products (see section 9.14 on page 40).
The internal transmitter module (see section 9.9 on page 29) can directly drive antennas designed for proximity operation up to 100 mm away without any additional active circuitry.
The parallel interface can be connected directly to any 8-bit microprocessor to ensure reader/terminal design flexibility. Serial peripheral interface (SPI) compatibility is also supported (see section 9.1.4 on page 9).
Features and benefits
- Highly integrated analog circuitry for demodulating and decoding card/tag responses
- Buffered output drivers enable antenna connection with minimal external components
- Approaching working distance up to 100 mm
- Both ISO/IEC 14443 A and ISO/IEC 14443 B standards are supported
- Support MIFARE Mini, MIFARE 1K, MIFARE 4K protocol
- Contactless communication at MIFARE higher baud rates (up to 424 kBd)
- Crypto1 and secure non-volatile internal main memory
- Pin compatible with MFRC500, MFRC530, and SLRC400
- Parallel microprocessor interface with internal address latch and IRQ lines
- SPI compatibility
- Flexible interrupt handling
- Automatic detection of parallel microprocessor interface types
- 64-byte send and receive FIFO buffers
- Hard reset through low-power functionality
- Software-controlled power-down mode
- Programmable timer
- Unique serial number
- User-programmable startup configuration
- Bit-oriented and byte-oriented framing
- Separate power pins for analog, digital, and transmitter modules
- An internal oscillator buffer optimized for low phase jitter enables a 13.56 MHz quartz connection
- Clock frequency filtering
- The transmitter operates from 3.3 V to 5 V in both proximity and proximity applications
- The digital module operates at 3.3 V or 5 V
apply
- Electronic payment systems
- Identify the system
- Access control system
- User Services
- Digital content systems
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