SI523 13.56MHz non-contact reader chip

Product characteristics

• Highly integrated analog circuits, demodulation and decoding response

• Buffered output driver with minimal peripheral components for antenna connection

• The operating distance of the reader mode depends on the size and number of turns of the antenna, typical operating distance is 50 mm,

• Supports ISO/IEC 14443 A/B higher rate communication up to 848 kBd

•· Supported host interfaces:

- SPI interface with a rate of up to 10 Mbits/s

- I2C interface, fast mode speed up to 400 kBd, high-speed mode speed up to 3400 kBd

- Serial UART, speed up to 1228.8 kBd

•· 64-byte FIFO

• Flexible interrupt mode

•· Low power hard reset function

•· Supports soft power failure mode

•· Integrated programmable timer

•·27.12 MHz internal oscillator

•· Supply voltage 2.5V-3.6V

•· Integrated CRC coprocessor

•· Programmable I/O pins

•· Support ACD mode

- The ACD mode automatically detects the 13.56 MHz RF field and RF card

- The ACD process does not require MCU intervention

- OSC Indicates the function of monitoring startup failure