Atmel AT88RF020 Folheto
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.
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.
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
Interface
–
ISO/IEC 14443-2:2001 Type B Compliant
–
ISO/IEC 14443-3:2001 Type B Compliant
Anticollision Protocol
Anticollision Protocol
–
Command Set Optimized for Multicard RF
Communications
Communications
–
Tolerant of Type A Signaling for
Multiprotocol Applications
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
B
YTE
0
B
YTE
1
B
YTE
2
B
YTE
3
B
YTE
4
B
YTE
5
B
YTE
6
B
YTE
7
Page 0
[
Unique Tag ID
]
[
Lock Bits
]
Page 1
[
Application Data
]
[
Reserved
]
Page 2
[
Signature
]
[
Counter
]
Page 3
[
Password
]
Page 4
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…
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Page 31
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R
E A D
/ W
R I T E
R F S
M A R T
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A R D
I C
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E C U R E
R F
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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: securerf@atmel.com