MRFC522 JSMICRO SEMICONDUCTOR - a less expensive alternative to NXP circuits

MFRC522 from JSMICRO SEMICONDUCTOR company is an equivalent of the NXP circuit with the same marking.

It is a RFID (Radio-Frequency Identification) reader circuit, working at 13,56 MHz frequency and supporting ISO/IEC 14443A and ISO/IEC 14443B protocols. It can read data from RFID card from a distance up to 7 cm, and is characterised by a high degree of technical integration. The MFRC522 circuit is equipped with a low power consumption mode (hardware or software enabled) and a low power consumption cards detection mode (LPCD). Communication with the circuit is carried out by SPI, I2C or UART interface. Internal 64-byte FIFO buffer provides fast and effective data transmission, while transmission reliability is ensured by a built-in CRC mechanism. Small amount of external components is required for connecting external antenna. The circuit is powered by a voltage ranging from 2,5V to 5V and encapsulated in a VQFN32 (5 x 5mm) housing.

MFRC522 JSMICRO can find applications in many fields such as: access control systems for authorising persons by means of RFID cards, key rings or other media; contactless payments, public transport, portable equipment etc.

Features and advantages:

• Buffered output drivers for antenna connection with minimal external components
• Highly integrated analogue circuits for demodulation and response decoding
• Host interfaces support:
  • SPI up to 10 Mbit/s
  • I2C-bus up to 400kBd in fast mode and up to 3400kBd in High-speed mode
  • RS232 Serial UART up to 1228,8kBd with pin-dependent voltage levels
• Typical operating distance in read mode up to 70mm, depending on a antenna size and tuning
• Flexible interruption modes
• FIFO buffer supports sending and receiving 64 bytes
• Programmable clock
• Hard reset with low power consumption function
• Shutdown via software mode
• Internal oscillator for connecting 27,12MHz quartz
• CRC co-processor
• Power supply from 2,5V to 3,3V
• Programmable I/O pins

The JSMICRO SEMICONDUCTOR company offers a wide selection of products-equivalents from well-known manufacturers – from simple discrete elements to more advanced integrated circuits.

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