RFID tags feature I2C interface to talk to appliances

March 28, 2014 // By Julien Happich
Murata has announced the mass production of an RFID chip with a wired I2C interface, the LXMS2HACNF-165. Conforming to the RFID standards ISO/IEC 18000-6C, EPC global C1G2 and operating in the 900 MHz frequency band, this device complements the company’s surface mount Magicstrap RFID family of devices.

The I2C interface enables other circuits mounted on the customer’s equipment to be read using an UHF RFID-Reader/Writer, via the RFID chip making the connection. The data in the RFID device can also be read by an IC, enabling the management of memory settings in consumer appliances prior to shipping.

The settings of equipment can be changed even when it is packaged in a carton box immediately before shipment. The I2C interface extends the possible applications far beyond the typical use cases of previous Magicstrap RFID tags which were confined to process management, commodity management or traceability.

The tag could retrieve appliance error log data from an internal MCU, or could record environmental data such as temperature changes in food service supply chain logistics applications and communicate it to an appropriate RFID reader/writer, even when the equipment is malfunctioning or switched off.