The TRH031M device is a highly-integrated multi-protocol reader for contactless communication.
RF Operating Frequency: 13.56MHz Proximity operating distance: up to 100mm Automatic external Interface type detection Automatic and flexible interrupt handling 64-byte Tx/Rx FIFO buffer Host communication: SPI, parallel Bit- and byte-oriented framing Supports hard reset with low power function and power-down control Programmable 8-bit timer with pre-scaler Independent power supply pins for digital, analogue and transmitter sections Supports unique card detection function for low power consumption application Power supply: +2.7 to +3.3Vdc Operating temperature range: -25 to +85°C