AT88RF001

Features 13.56 MHz ± 7 kHz RFID Interface for Multi-chip Cards and Tags Electrically Compatible with ISO/IEC 14443-2, Type B Serial Channel Configurable to Communicate with External Chips Supports SPI and Two-wire Serial EEPROM Interface 320 Read/Write EEPROM Bits, Divided into 10 Pages of 32 Bits Password and Write Lock Protection Programmable Send Protocols Integrated Tuning Capacitor ID Length Programmable from 4 to 18 Bytes Optional 2-byte CRC Description The AT88RF001 is a stand-alone 13.56 MHz RFID front end that includes a serial port suitable for connection to an external high-density serial memory. Using the on-board EEPROM, it can be configured to communicate using various protocols and interface to both two-wire and SPI external devices. The device contains 320 bits of full read/write EEPROM memory and offers features such as passwords, locking and a variable-length ID. It is electrically compatible with ISO/IEC 14443-2, Type B. The IC includes an internal tuning capacitor; only an external coil antenna is required to complete the RFID channel. The serial channel is configurable to communicate with external ICs using either twowire or four-wire (SPI) serial channels, at a maximum speed of 106 kilobits per second (Kbps). An external bypass capacitor will be required to filter and stabilize the supply generated by the RFID front end. Up to 2 mA can be drawn by the external memory when communications are not occurring. Figure 1. Block Diagram VSS ...