AT88RF1354-ZU

Features Compatible with all ISO/IEC 14443 Type B Compliant Cards, Tags, and Transponders High Performance 13.56 MHz RF Communications Interface ISO/IEC 14443-2 Type B Compliant 106 Kbps Signaling ISO/IEC 14443-3 Type B Compliant Frame and Data Format Internal Transmitter Drives Antenna with No External Active Circuitry 13.56 MHz Type B Robust Receiver Demodulates and Decodes Type B Signals Intelligent RF Reader Functions RF Reader ISO/IEC 14443-3 Type B Polling Function Specification Type B Frame Formatting and Decoding is Handled Internally Internal CRC Generation and Error Detection AT88RF1354 Adjustable Frame Wait Timing Internal Data Buffer Two Serial Communication Interface Options Two-Wire Interface (TWI) Slave Device with Clock Speed up to 1 MHz SPI Mode 0 Slave Device with Clock Speed up to 2 MHz SPI or TWI Mode Selection with Interface Mode Select Pin Compatible with 3.3 V and 5 V Microcontrollers Supply Voltage: 3.0 to 3.6 Volts or 4.5 to 5.5 Volts Package: 6 by 6 mm QFN, Green compliant (exceeds RoHS) Industrial Operating Temperature: -40 to +85 C Description The AT88RF1354 is a smart, high performance ISO/IEC 14443 Type B RF Reader IC. The AT88RF1354 communicates with RFID Transponders or Contactless Smartcards using the industry standard ISO/IEC 14443-2 Type B signal modulation scheme and ISO/IEC 14443-3 Type B frame format. Data is exchanged half duplex at a 106k bit per second rate. A two byte CRC B provides communication error detection capability. The AT88RF1354 is compatible with 3.3 V and 5 V host microcontrollers with two-wire or SPI serial interfaces. In two-wire interface mode the AT88RF1354 operates as a TWI slave and requires four microcontroller pins for data communication and handshaking. In SPI interface mode the AT88RF1354 operates as a mode 0 SPI slave and requires six microcontroller pins for data communication and handshaking. To communicate with an RFID transponder the host microcontroller sends a data packet for transmission over the RF communications channel, and receives the response data packet that is received from the transponder over the RF communications channel. AT88RF1354 performs all RF communication packet formatting, decoding, and communication error checking. The host microcontroller is not burdened with RF encoding, timing, or protocol functions since these tasks are all performed by the AT88RF1354. 8547BRFID3/09 1. Introduction 1.1. Block Diagram Figure 1. Block Diagram RFin Filter C6 Modulator Transmit Receive ANT SRAM Command and Response Vss ANT ANT Driver Logic Registers PLL 13.56 MHz Serial Interface CLKO Xtal1 Xtal2 ResetB ISEL Istat SSB SCK SDI SDO ADDR 2 13.56 MHz Type B RF Reader Specification 8547BRFID3/09