World's first RFID tagging IC with sensor input

Sensor Review

ISSN: 0260-2288

Article publication date: 1 June 2000




(2000), "World's first RFID tagging IC with sensor input", Sensor Review, Vol. 20 No. 2.



Emerald Group Publishing Limited

Copyright © 2000, MCB UP Limited

World's first RFID tagging IC with sensor input

World's first RFID tagging IC with sensor input

Keyword: Sensors

Microchip's new RFID tagging IC provides a sensor input that - contact-free - transmits a serial number and determines the logic state of an external sensor output or switch (see Plate 5).

Using the unique features of the MCRF202 RFID 125KHz microID™ tagging IC, design engineers can power and determine the state of a passive, batteryless switch or sensor without eye or electrical contact while simultaneously reading its serial number or other data stored in the on-chip memory. The MCRF202 can even read non-intrusively the location, serial number and sensor state in buried pipes, building components buried in concrete or walls, or biological sensors inside living animals.

Plate 5The MCRF202

The MCRF202 features 96 or 128 bits of ROM; encoding options of NRZ Direct, Differential Biphase, and Manchester Biphase; and modulation options of Direct, FSK, and PSK. A DC output for powering external devices allows the MCRF202 to be used as an AC to DC RF power rectifier or voltage regulator. The device is powered by an external RF transmitter through inductive coupling and supplies a DC source to the external switch.

Development support is provided by Microchip's DV103001 microID Developer's Kit, which allows designers to contactlessly program and read an assortment of tags. The kit includes a contact-free programmer, reference readers, schematics, software and product samples. A design reference guide complete with PICmicro® eight-bit microcontroller code files is also included.

For further information, please contact: David Wright, Arizona Microchip Technology. Tel: +44 (0) 118 921 5858; E-mail:

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