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MLX90111

128bit Read Write Transponder

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MLX90111

128bit Read Write Transponder

Features

- 144bit EEPROM code, flexible Read Write Transponder IC

- Very Big reading range, and large write range.

- ID configured as 8 user words of 16 bits, and multiple write protection levels, including OTP

- 16 bit Configuration word with lock flags per word and option bits

- Different encoding and datarate options

- 250pF integrated tuning capacitance with wide post assembly tuning range

- 100,000 write cycle, 10 year EEPROM retention

- Guaranteed data integrity for reliable programming

Applications

Animal ID (ISO 11784, -85 compliant), ATM, Access Control, Material Logistics, Overmoulded

assemblies with important detuning effects.

Ordering Information

Part No.

MLX90111

Temperature Range

25 °C Consumer

-40 to 85 °C Automotive

Production parts available Q1 2001

Package

Sawed wafer on frame

Bare die in blistertape

SOIC-8 150mils

Functional Diagram

MLX90111

Coil

L

Ctune

GND

Description

The MLX90111 is a flexible 128 bit Read Write

Transponder IC operating at 125kHz. It has been

designed for high performant and highly reliable RFID

systems requiring multiple write access to the

transponder memory.

Clock and power supply are taken from the

electromagnetic field. A resistor is switched in parallel to

the resonant circuit formed by the integrated tuning

capacitor and the external coil, to amplitude modulate

the electromagnetic field. Encoding of the 128 bits ID

and data rate can be defined by setting the

corresponding EEPROM bits.

High quality factors can be applied as the frequency can

be tuned over a range of +/-10% to +/-0.5% accurate

after assembly, by changing the value of the tuning

capacitor up to +/- 2pF.

The EEPROM is configured as 11 words of 16 bits.

Words 1 to 8 form the ID and are continuously read out

during normal operation. Each of these can be

individually locked, or the complete EEPROM can be set

to read only.

The transponder can be written over the full range from

0% to 60% of the normal reading distance. The

transponder stops modulating when receiving an AM

asynchronous pattern. It will then synchronize on the

first bit it receives. The 32 bit write command is

transmitted using Return to One modulation, including

direct word addressing and multiple security checks.

Data integrity is guaranteed by critical read out after

programming.

MLX90111 128bit Read Write Transponder Page 1 of 12

Rev 1.12 5-Feb-01

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