MFRC522

• Product Introduction

Features ◆ High integration modem circuit; ◆ A small number of external devices can be used to connect the output driver stage to the antenna; ◆Support ISO/IEC 14443 TypeA and MIFARE communication protocols®; ◆ Communication distance with ISO 14443A/MIFARE® in reader mode up to 50mm, depending on antenna length and tuning. ◆ Supports communication with higher transmission rates of ISO 14443 212kbit/s and 424kbit/s. ◆Support MIFARE® Classic encryption; ◆Supported Host Interfaces: -10Mbit/s SPI interface -I2C interface, the rate is 400 kbit/s in fast mode and 3400 kbit/s in high-speed mode -Serial UART, transmission rate up to 1228.8 kbit/s, frame dependent on RS232 interface, voltage level depends on the pin voltage supplied ◆ 64-byte send and receive FIFO buffer; ◆Flexible interrupt mode; ◆ Programmable timer. ◆There are three power-saving modes: hardware power down, software power down and transmitter power down, the first two modes are the same as MFRC500 and CL RC400, and its unique "transmitter power down" can turn off the internal antenna driver, that is, turn off the RF field; ◆Built-in temperature sensor to automatically stop RF emission when the chip temperature is too high; ◆ Use multiple independent power supplies to avoid mutual interference between modules and improve the stability of work; ◆With CRC and parity functions, the 16-bit long CRC calculation polynomial of the CRC coprocessor is fixed as: x16+x12+x5+1, in accordance with ISO/1EC14443 and CCTITT protocol; ◆Internal oscillator, connected to 27.12MHz crystal; ◆2.5~3.3V low voltage and low power consumption design; ◆Operating temperature range -30~+85°C; ◆Ultra-small volume of 5mm×5mm×0.85mm. Edit this section Applications The MF RC522 is suitable for a wide range of applications based on the ISO/IEC 14443A standard that require low-cost, small size, high performance, and contactless communication from a single power supply. ▲Three tables; ▲ Board unit; ▲Public transportation terminals; ▲Portable handheld device; ▲Contactless public telephone. //www.chip100.com/