RX95HF Near field communication transceiver for tag emulation Datasheet - production data Applications Typical protocols supported: ISO/IEC 14443-3 Type A tag emulation Typical RX95HF applications include: Keyboard, laptop, set top box, printer, TV, etc. Identification, item pairing and data exchange VFQFPN32 5x5 mm Features Operating mode supported: Tag Emulation for passive peer-to-peer communication Hardware features Dedicated internal frame controller Highly integrated Analog Front End (AFE) for RF communications Transmission and reception modes in Tag Emulation mode Optimized power management Field Detection mode RF communication 13.56 MHz ISO/IEC 14443 Type A in Tag Emulation mode Communication interfaces with a Host Controller Serial peripheral interface (SPI) Slave interface Up to 256-byte command/reception buffer (FIFO) 32-lead, 5x5 mm, very thin fine pitch quad flat (VFQFPN) ECOPACK2 package June 2014 DocID023884 Rev 3 1/44 This is information on a product in full production. www.st.comContents RX95HF Contents 1 Description . 4 1.1 Block diagram . 4 1.2 List of terms 5 2 Pin and signal descriptions . 6 3 Power management and operating modes . 8 3.1 Operating modes 8 3.2 Startup sequence 9 4 Communication protocols . 11 4.1 Serial peripheral interface (SPI) 11 4.1.1 Polling mode . 11 4.1.2 Interrupt mode 13 5 Commands 14 5.1 Command format . 14 5.2 List of commands . 14 5.3 IDN command (0x01) description . 15 5.4 Protocol Select command (0x02) description 15 5.5 Pollfield command (0x03) description . 17 5.6 Listen command (0x05) description . 17 5.7 Send command (0x06) description 19 5.8 Idle command (0x07) description . 20 5.8.1 Idle command parameters . 21 5.8.2 Optimizing wake-up conditions . 21 5.8.3 Using various techniques to return to Ready state 21 5.9 Read Register (RdReg) command (0x08) description . 22 5.10 Write Register (WrReg) command (0x09) description . 23 5.10.1 Improving RF performance 23 5.11 AcFilter command (0x0D) description . 25 5.12 Echo command (0x55) description 27 2/44 DocID023884 Rev 3