EM4135

Copyright

 2003, EM Microelectronic-Marin SA

1

www.emmicroelectronic.com

13.56MHz, ISO15693 Standard Compliant

Contactless Identification Device

General Description

The EM4135 is a CMOS integrated circuit intended for use in

contactless Read/Write transponders.

The 2.4k bit EEPROM memory contained in the chip is

organized in 38 words of 64 bits, each word can be irreversibly

locked. The memory contains a unique serial number (UID).

The ISO 15693 anticollision algorithm allows operating more

tags in the field simultaneously. The EM4135 is completely

ISO15693 compliant since it includes all ISO15963 mandatory

features.

The 64 bits 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

Access Control

Ticketing

Asset management

Features

ISO15693 Standard: Fully Compliant

Operating Frequency: 13.56MHz

± 7KHz

(ISM, world-wide licence free available)

2.4K bit EEPROM organised in 38 words of 64 bits

64-bit Unique Identifier (UID)

Lock feature convert EEPROM words in Read Only

Support Application Field Identifier (AFI)

Power-check for EEPROM write operation

Resonant capacitor integrated on chip

28pF or 95pF (selectable by mask option)

No external supply buffer capacitor needed

-40 to +85

°C temperature range

Very low Power consumption (no battery needed)

Bonding pads optimised for flip-chip assembly

Typical Operating Configuration

C1

C2

EM4135

L

Figure 1.

Block Diagram

Vdd

Cr

L2

L1

POR

EEPROM

R

E

G

U

L

A

T

O

R

MODULATOR

LIMITER

POWER

MONITOR

AM

DEMODULATOR

MOD

LOGIC

CLOCK

EXTRACTOR

RECEIVED

CLOCK

Lr

VPOS

PULSE

RECTIFIER

PCK

Figure 2.