AT88SC0404CRF(2008) 데이터 시트보기 (PDF) - Atmel Corporation

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AT88SC0404CRF
(Rev.:2008)

CryptoRF Specification

Atmel Corporation 

1. Introduction

1.1 Description

The CryptoRF® family integrates a 13.56 Mhz RF interface with CryptoMemory® security fea-

tures. This product line is ideal for RF tags and contactless smart cards that can benefit from

advanced security and cryptographic features. The device is optimized as a contactless secure

memory for 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 Anticollision Protocol.

Data is exchanged half duplex at a 106k bit per second rate, with a two byte CRC_B providing

error detection capability. 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 communica-

tion interface, and a robust anticollision protocol.

The seven products in this family contain 1 Kbits to 64 Kbits of User Memory plus 2 Kbits of Con-

figuration Memory. The 2 Kbits of Configuration Memory contains read/write password sets,

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 environment. A

programmable AFI register allows this IC to be used in numerous applications in the same geo-

graphic area with seamless discrimination of cards assigned to a particular application during

the anticollision process.

1.2 Block Diagram

Figure 1-1. Block Diagram

RF Interface

AC1

Over

C

Voltage

Modulator

Clamp

VSS

AC2

Command

and

Response

EEPROM

Regulator

Vdd

Clock

Extraction

Data

Extraction

Password

Verification

Frame Formatting

and

Error Detection

Interface

Anticollision

Random Number

Generator

Data Transfer

Authentication,

Encryption and

Certification Unit

4 AT88SC0104/0204/0404/0808/1616/3216/6416CRF

5276A–RFID–07/08

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