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AT88SC0808CRF-MS1

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品牌：ATMEL

描述：CryptoRF EEPROM Memory 8 Kbits

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AT88SC0808CRF-MS1 概述

CryptoRF EEPROM Memory 8 Kbits 了CryptoRF EEPROM存储器8千位

AT88SC0808CRF-MS1 数据手册

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Features

• One of a Family of Devices with User Memory of 1 Kbit to 64 Kbits

• 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

• Integrated 82 pF Tuning Capacitor

• User EEPROM Memory

– 8 Kbits Configured as Eight 128-byte (1-Kbit) User Zones

– Byte, Page, and Partial Page Write Modes

– Self-timed Write Cycle

13.56 MHz

CryptoRF

EEPROM Memory

8 Kbits

• 256-byte (2-Kbit) Configuration Zone

– User-programmable Application Family Identifier (AFI)

– User-defined Anticollision Polling Response

– User-defined Keys and Passwords

• High-Security Features

– 64-bit Mutual Authentication Protocol (under license of ELVA)

– Encrypted Checksum

– Stream Encryption

– Four Key Sets for Authentication and Encryption

– Eight Sets of Two 24-bit Passwords

– Password and Authentication Attempts Counters

– Selectable Access Rights by Zone

– Antitearing Function

– Tamper Sensors

AT88SC0808CRF

Summary

• High Reliability

– Endurance: 100,000 Write Cycles

– Data Retention: 10 Years

– Operating Temperature: −40°C to +85°C

Description

The CryptoRF^®family integrates a 13.56 MHz RF interface into a CryptoMemory^®,

resulting in a contactless smart card with advanced security and cryptographic fea-

tures. This device is optimized as a contactless secure memory, for RF smart cards,

and secure data storage, without the requirement of an internal microprocessor.

For communications, the RF interface utilizes the ISO/IEC 14443-2 and -3 Type B bit

timing and signal modulation schemes, and the ISO/IEC 14443-3 Slot-MARKER Anti-

collision Protocol. Data is exchanged half duplex at a 106-kbit/s rate, with a two-byte

CRC_B providing error detection capability. The maximum communication range

between the reader antenna and contactless card is approximately 10 cm when used

with an RFID reader that transmits the maximum ISO/IEC 14443-2 RF power level.

The RF interface powers the other circuits; no battery is required. Full compliance with

the ISO/IEC 14443-2 and -3 standards results in anticollision interoperability with the

AT88RF020 2-Kbit RFID EEPROM product and provides both a proven RF communi-

cation interface and a robust anticollision protocol.

The AT88SC0808CRF contains 8 Kbits of user memory and 2 Kbits of configuration

memory. The 2 Kbits of configuration memory contain eight sets of read/write pass-

words, four crypto key sets, security access registers for each user zone, and

password/key registers for each zone.

The CryptoRF command set is optimized for a multicard RF communications environ-

ment. A programmable AFI register allows this IC to be used in numerous applications

in the same geographic area with seamless discrimination of cards assigned to a par-

ticular application during the anticollision process.

Rev. 5027CS–CRRF–12/06

Note: This is a summary document. A complete document is available

under NDA. For more information, please contact your local Atmel

sales office.

Block Diagram

Figure 1. Block Diagram

RF Interface

Command

and

AC1

EEPROM

Response

Over

Voltage

Clamp

Data Transfer

Regulator

V_DD

VSS

Password

Verification

Authentication

Encryption and

Certification Unit

AC2

Anticollision

Frame Formatting

and

Clock

Extraction

Error Detection

Interface

Data

Extraction

Random Number

Generator

Communications

All personalization and communication with this device is performed through the RF

interface. The IC includes an integrated tuning capacitor, enabling it to operate with only

the addition of a single external coil antenna.

The RF communications interface is fully compliant with the electrical signaling and RF

power specifications in ISO/IEC 14443-2:2001 for Type B only. Anticollision operation and

frame formatting are compliant with ISO/IEC 14443-3:2001 for Type B only.

ISO/IEC 14443 nomenclature is used in this specification where applicable. The

following abbreviations are utilized throughout this document. Additional terms are

defined in the section in which they are used.

•

PCD – Proximity Coupling Device: the reader/writer and antenna

PICC – Proximity Integrated Circuit Card: the tag/card containing the IC and

antenna

•

RFU – Reserved for Future Use: any feature, memory location, or bit that is held as

reserved for future use

$ xx – Hexadecimal Number: denotes a hex number “xx” (Most Significant Bit on

left)

Anticollision Protocol

When the PICC enters the 13.56 MHz RF field of the host reader (PCD), it performs a

power on reset (POR) function and waits silently for a valid Type B polling command.

The CryptoRF PICC processes the antitearing registers as part of the POR process.

The PCD initiates the anticollision process by issuing an REQB or WUPB command.

The WUPB command activates any card (PICC) in the field with a matching AFI code.

AT88SC0808CRF

5027CS–CRRF–12/06

AT88SC0808CRF

The REQB command performs the same function but does not affect a PICC in the Halt

state. The CryptoRF command set is available only after the anticollision process has

been completed.

CRC Error Detection

A two-byte CRC_B is required in each frame transmitted by the PICC or PCD to permit

transmission error detection. The CRC_B is calculated on all of the command and data

bytes in the frame. The SOF, EOF, start bits, stop bits, and EGT are not included in the

CRC_B calculation. The two-byte CRC_B follows the data bytes in the frame.

Figure 2. Location of the Two CRC_B Bytes within a Frame

SOF

K data bytes

CRC1

CRC2

EOF

Type A Tolerance

The RF Interface is designed for use in multiprotocol applications. It will not latch or lock

up if exposed to Type A signals and will not respond to them. The PICC may reset in the

presence of Type A field modulation but is not damaged by exposure to Type A signals.

5027CS–CRRF–12/06

User Memory

The EEPROM user memory is divided into eight user zones as shown in the memory

map in Table 1. Multiple zones allow for different types of data or files to be stored in

different zones. Access to the user zones is allowed only after security requirements

have been met. These security requirements are defined by the user in the configuration

memory during personalization of the device. The EEPROM memory page length is 16

bytes.

Table 1. Memory Map

Zone

$00

–

128 Bytes

User 0

–

$78

$00

–

User 1

–

$78

$00

–

User 6

128 Bytes

User 7

–

$78

Configuration

Memory

The configuration memory consists of 2048 bits of EEPROM memory used for storing

system data, passwords, keys, codes, and security-level definitions for each user zone.

Access rights to the configuration zone are defined in the control logic and may not be

altered by the user. These access rights include the ability to program certain portions of

the configuration memory and then lock the data written through use of the security

fuses.

Security Fuses

There are three fuses on the device that must be blown during the device personaliza-

tion process. Each fuse locks certain portions of the configuration memory as OTP

memory. Fuses are designated for the module manufacturer, card manufacturer and

card issuer and must be blown in sequence.

AT88SC0808CRF

5027CS–CRRF–12/06

AT88SC0808CRF

Communication Security

Communication between the PICC and reader operates in three basic modes. Standard

mode is the default mode for the device after power-up and anticollision. Authentication

mode is activated by a successful authentication sequence. Encryption mode is

activated by a successful encryption activation, following a successful authentication.

Table 2. Configuration Security Modes

Data Integrity

Mode

Standard

User Data

clear

Passwords

clear

Check

MDC⁽¹⁾

MAC⁽²⁾

Authentication

Encryption

clear

encrypted

Note:

1. Modification Detection Code

2. Message Authentication Code

Security Methodology

Figure 3. Security Methodology

Device (card)

Host (reader)

Card Number

COMPUTE Challenge A

VERIFY A

Challenge A

Compute Challenge B

Challenge B

VERIFY B

Check Password (RPW)

DATA

Read Password (RPW)

Checksum (CS)

VERIFY CS (optional)

Check Password (WPW)

Write Password (WPW)

DATA

VERIFY CS

Write DATA

Memory Access

Depending on the device configuration, the host will carry out the authentication protocol

and/or present different passwords for each operation: read or write. To insure security

between the different user zones (multiapplication card), each zone can use a different

set of passwords. A specific attempts counter for each password and for the

authentication provides protection against systematic attacks.

5027CS–CRRF–12/06

Security Operations

Antitearing

In the event of a power loss during a write cycle, the integrity of the device’s stored data

may be recovered. This function is optional: the host may choose to activate the

antitearing function depending on application requirements. When antitearing is active,

write commands take longer to execute since more write cycles are required to

complete them. Data writes are limited to 8-byte pages when antitearing is active.

Data is written first to a buffer zone in EEPROM instead of to the intended destination

address, but with the same access conditions. The data is then written to the required

location. If this second write cycle is interrupted due to a power loss, the device will

automatically recover the data from the buffer zone at the next power-up.

Password Verification

Authentication Protocol

Passwords may be used to protect user zone read and/or write access. When a

password is presented using the Check Password command, it is memorized and active

until power is removed unless a new password is presented or a valid DESELECT or

IDLE command is received. Only one password is active at a time, but write passwords

also give read access.

The access to a user zone may be protected by an authentication protocol in addition to

password dependent rights. Passwords are encrypted in authentication mode.

The authentication success is memorized and active as long as the chip is powered,

unless a new authentication is initialized or a valid DESELECT or IDLE command is

received. If the new authentication request is not validated, the card loses its previous

authentication and it must be presented again. Only the last request is memorized.

Encryption

The data exchanged between the card and the reader during Read, Write, and Check

Password commands may be encrypted to ensure data confidentiality.

The issuer may choose to protect the access to a user zone with an encryption key by

settings made in the configuration memory. In that case, activation of the encryption

mode is required in order to read/write data in the zone.

The encryption activation success is memorized and active as long as the chip is

powered, unless a new initialization is initiated or a valid DESELECT or IDLE command

is received. If the new encryption activation request is not validated, the card will no

longer encrypt data during read operations nor will it decrypt data received during write

or Check Password operations.

Checksum

The PICC implements a data validity check function in the form of a checksum. The

checksum may function in standard or cryptographic mode. In the standard mode, the

checksum is optional and may be used for transmission error detection. The

cryptographic mode is more powerful since it provides data origin authentication

capability in the form of a Message Authentication Code (MAC). To write data to the

device, the host is required to compute a valid MAC and provide it to the device. If after

an ingoing command the device computes a MAC different from the MAC transmitted by

the host, not only is the command abandoned but the cryptographic mode is also reset.

A new authentication is required to reactivate the cryptographic mode.

Initial Device

Programming

CryptoRF is delivered with all security features disabled. To program the polling

response or enable the security features of CryptoRF the device must be personalized

by programming several registers. This is accomplished by programming the

configuration memory using simple write and read commands.

AT88SC0808CRF

5027CS–CRRF–12/06

AT88SC0808CRF

Transport Password

To gain access to the configuration memory, a transport password known as the secure

code must be presented using the Check Password command. The secure code for

AT88SC0808CRF is $40 7F AB.

Tuning Capacitance

Reliability

The capacitance between the coil pins AC1 and AC2 is 82 pF nominal and may vary

±10% over temperature and process variation.

Table 3. Reliability

Parameter

Min

100,000

Typ

–

Max

–

Units

Write endurance

Write

Cycles

Data retention

–

Years

Mechanical

Engineering Samples

Sample Code

Sample Description

Maximum Range

AT88SC0808CRF-MR1

R Module, 82 pF, on 35 mm tape

AT88SC0808CRF-L01B RF Smart Card, ID-1 size, PVC

8−10 cm

1−3 cm

AT88SC0808CRF-MU1

AT88SC0808CRF-MS1

RFID Tag, 17 mm diameter, on 35 mm tape

RFID Tag, 10 x 20 mm size, on 35 mm tape

10−15 mm

5027CS–CRRF–12/06

Ordering Information

Ordering Code

Package

Tuning Capacitor

82 pF

Temperature Range

Commercial (0° C to 70° C)

Industrial (−40° C to 85° C)

AT88SC0808CRF-MR1

AT88SC0808CRF-WA1

R Module

6 mil wafer, 150 mm diameter

82 pF

Package Type

Description

R Module

2- lead RF Smart Card Module, XOA2 style, RoHS compliant

Packaging Information

Ordering Code: AT88SCxxxxCRF-MR1

Module Size:

Dimension: 5.06 x 8.00 [mm]

Top

Glob

: Square - 4.8 x 5.1 [mm]

Thi ckness 0.38 [mm]

Pitch: 9.5 [mm]

AT88SC0808CRF

5027CS–CRRF–12/06

Atmel Corporation

Atmel Operations

2325 Orchard Parkway

San Jose, CA 95131, USA

Tel: 1(408) 441-0311

Fax: 1(408) 487-2600

Memory

RF/Automotive

Theresienstrasse 2

Postfach 3535

74025 Heilbronn, Germany

Tel: (49) 71-31-67-0

Fax: (49) 71-31-67-2340

2325 Orchard Parkway

San Jose, CA 95131, USA

Tel: 1(408) 441-0311

Fax: 1(408) 436-4314

Regional Headquarters

Microcontrollers

2325 Orchard Parkway

San Jose, CA 95131, USA

Tel: 1(408) 441-0311

Fax: 1(408) 436-4314

1150 East Cheyenne Mtn. Blvd.

Colorado Springs, CO 80906, USA

Tel: 1(719) 576-3300

Europe

Atmel Sarl

Route des Arsenaux 41

Case Postale 80

CH-1705 Fribourg

Switzerland

Tel: (41) 26-426-5555

Fax: (41) 26-426-5500

Fax: 1(719) 540-1759

Biometrics/Imaging/Hi-Rel MPU/

High Speed Converters/RF Datacom

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Tel: (33) 4-76-58-47-50

La Chantrerie

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44306 Nantes Cedex 3, France

Tel: (33) 2-40-18-18-18

Fax: (33) 2-40-18-19-60

Asia

Room 1219

Chinachem Golden Plaza

77 Mody Road Tsimshatsui

East Kowloon

Hong Kong

Tel: (852) 2721-9778

Fax: (852) 2722-1369

ASIC/ASSP/Smart Cards

Zone Industrielle

13106 Rousset Cedex, France

Tel: (33) 4-42-53-60-00

Fax: (33) 4-42-53-60-01

Fax: (33) 4-76-58-47-60

1150 East Cheyenne Mtn. Blvd.

Colorado Springs, CO 80906, USA

Tel: 1(719) 576-3300

Japan

9F, Tonetsu Shinkawa Bldg.

1-24-8 Shinkawa

Chuo-ku, Tokyo 104-0033

Japan

Tel: (81) 3-3523-3551

Fax: (81) 3-3523-7581

Fax: 1(719) 540-1759

Scottish Enterprise Technology Park

Maxwell Building

East Kilbride G75 0QR, Scotland

Tel: (44) 1355-803-000

Fax: (44) 1355-242-743

Literature Requests

www.atmel.com/literature

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Printed on recycled paper.

5027CS–CRRF–12/06

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