EM4035

Copyright

 2003, EM Microelectronic-Marin SA

1

www.emmicroelectronic.com

13.56MHz CRYPTO ISO15693 Compliant

Contactless Identification Device

General Description

The EM4035 is a CMOS integrated circuit intended for use in

contactless Read/Write transponders. The EM4035 is

completely ISO15693 compliant and is a member of ISO

15693 standard passive Read/Write RF tags operating at

13.56MHz.

The Chip contains an implementation of a crypto-algorithm

with 96 bit of user configurable secret-Keys contained in

EEPROM.

The 3.2k bit EEPROM memory contained in the chip is

organized in 50 words of 64 bits, each word can be irreversibly

locked. The memory contains a unique 64-bit serial number

(UID).

An ISO 15693 anticollision algorithm allows operating more

tags in the field simultaneously.

The 64bits UID as defined in ISO15693 standard is factory

programmed and locked. It includes a 6 bits chip type and a

10 bits customer code made specific on request.

The resonant capacitor value is selected by metal mask.

Applications

High security hands-free access Control

Anti-counterfeiting

Ticketing

Asset management

Features

ISO15693 Standard: Fully Compliant

Operating Frequency: 13.56MHz

± 7KHz

64-bit Unique Identifier (UID)

3.2K bit EEPROM organised in 50 words of 64 bits

Support Application Field Identifier (AFI)

Smart Electronic Article Surveillance (EAS)

On Chip Crypto-Algorithm

Mutual authentication using symetrical challenge /

response exchange

Power-check for EEPROM write operation

Resonant capacitor integrated on chip

28pF or 95pF (selectable by mask option)

No external supply buffer capacitor needed

Very low Power consumption (no battery needed)

-40 to +85

°C Temperature range

Bonding pads optimised for flip-chip assembly

Typical Operating Configuration

C1

C2

EM4035

L

Figure 1.

Block Diagram

LOGIC

EEPROM

CRYPTO

ENGINE

RANDOM

NUMBER

GENERATION

CLOCK

EXTRACTOR

AM

DEMODULATOR

MODULATOR

LIMITER

RECEIVED

CLOCK

PULSE

MOD

RECTIFIER

Lr

Cr

L2

L1

C

BUF

POWER

MONITOR POR

PCK

V

DD

V

POS

Figure 2.