Advanced rewriteable RFID devices

18 July 2001 Telecoms, Datacoms, Wireless, IoT

Microchip's family of rewriteable 13,56 MHz microID tagging devices, the MCRF45X, are advanced 13,56 MHz, passive RFID products. These devices feature the largest memory, fastest data rate, longest read/write range, and lowest power consumption of any 13,56 MHz passive RFID device, according to the company.

The MCRF45X family members features no on-chip capacitor (MCRF450), 100 pF on-chip resonant capacitor (MCRF451), dual 50 pF on-chip capacitors in series (25 pF total) for two antenna connections (MCRF452), and a 50 pF on-chip resonant capacitor (MCRF455). A large 1 Kb memory is divided into 32 individually write-protected blocks. Low power consumption of 28 µW and 'cloaking' modulation provide an extremely long read range. This allows the devices to be used in applications where the tags are on high-speed conveyors, packaged inside cartons, in the proximity of other tags, or in noisy environments.

The MCRF450 is also the only device offering a 32-bit enhanced EAS function. Key tags can never be duplicated using since the 32-bit unique ID cannot be reprogrammed. Typical applications will be able to write to at least 10 MCRF450 tags per second and read from at least 20 tags per second. The MCRF45X devices can also operate in fast mode, in which reader-to-tag communications are approximately 10 times faster.

Avnet Kopp (011) 444 2333

Azona (012) 665 2880

Tempe Technologies (011) 452 0530

Unique Memec (021) 674 0835

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