Atmel AT88RF020 User Manual

AT88RF020 RF SMART CARD IC

2-KBIT READ/WRITE RF TRANSPONDER EEPROM

Key Features

• 2048-bit EEPROM Memory

• Contactless 13.56 MHz, ISO/IEC 14443 Type B Interface

• Password Protected User Memory

• Data Page Locking

• One-way Transaction Counter

• Integrated Tuning Capacitor

• High Reliability Memory, 100K Write Cycles with 10-year Data Retention

Applications

• Transit Tickets and Tokens

• Access Control Cards

• Product Traceability

• Document Authentication

The AT88RF020 is a low-cost, Type B contactless

EEPROM memory for use in cards, tags and tickets.

R EAD/WRITE RF SMART C ARD IC SECURE RF

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.

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

© 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

BYTE 0BYTE 1BYTE 2BYTE 3BYTE 4BYTE 5BYTE 6BYTE 7

Page 0 [ Unique Tag ID ] [ Lock Bits ]

Page 1 [ Application Data ] [ Reserved ]

Page 2 [ Signature ] [ Counter ]

Page 3 [ Password ]

Page 4 — — — — — — — —

…

…

Page 31 ————————

R EAD/WRITE RF SMART C ARD ICS ECURE RF

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Web Site

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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: [e-mail]