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Anleitung Zusammenfassung
1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 Product Contact 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 USA TEL 1(719) 576-3300 FAX 1(719) 540-1759 Literature Requests Web Site © Atmel Corporation 2003. All rights reserved. Atmel® and combinations thereof are registered trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be the trademarks of others. REV 2038B-08/03/7K Atmel’s AT88RF020 low-cost 2-Kbit RF Transponder EEPROM Smart Card IC is fully compliant with the Type B requirements of ISO/IEC 14443. This chip is powered by the RF interface, so a battery is not needed. A tuning capacitor is included on-chip so only a single external coil antenna is required to operate the device. The AT88RF020 is compatible with any Type B RF Smart Card Reader. Security AT88RF020 has several security features. A 64-bit password protects the 224-byte user memory which cannot be read or written unless the correct password has been presented. Write Lock bits protect critical data from being over-written. Each Lock bit protects an 8-byte page, so once the Lock bit is set the data can never be changed. The AT88RF020 features a one-way transaction counter that allows tracking of individual device usage. The counter is set at the factory to zero and is incremented by a COUNT command that simultaneously writes the Signature field. The counter can never be reset or decremented. Atmel uniquely serializes each device with a 32-bit read-only serial number. Memory Map AT88RF020 contains 256 bytes of memory configured as shown below. The first three pages can always be read by the system. Page 3 is the password and can never be read. Pages 4 thru 31 are the user memory area that can only be accessed after password validation. Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte S Byte б Byte 7 Page О [ Unique Tag ID ] [ Lock Bits ] Page I [ Application Data ] [ Reserved ] Page 2 [ Signature ] [ Counter ] Page 3 [ Password ] Page 4 -------- Page 3I -------- Product Features • Contactless 13.56 Mhz RF Communications Interface - ISO/IEC 14443-2:2001 Type B Compliant - ISO/IEC 14443-3:2001 Type B Compliant Anticollision Protocol - Command Set Optimized for Multicard RF Communications - Tolerant of Type A Signaling for Multiprotocol Applications - Operating Distance of 10 cm or more • Integrated Tuning Capacitor • 256 Byte EEPROM Memory • 8-Byte Page Write Mode 224-Bytes User Memory 5 mS Write Time Security Features - Unique Read-only PUPI Serial Number - 64-bit Password - One-way Transaction Counter - Write Lock Data Protection High Reliability - Endurance: 100,000 Write Cycles - Data Retention: 10 Years - Operating Temperature: 0°C to 70°C Package Options Wafer Form, Thinned to 6 Mils RF Smart Card Modules Prelaminate Sheets Development Tools AT88RF020-DK Development Kit, including RF reader and software Atmel Contact: securerf@atmel.com...