San Jose, CA — Atmel Corporation's LF OTP (One Time Programmable) transponder, desinated IDIC® ATA5575M1, has been optimized for next-generation access control systems. Application areas include, for example, hotel rooms, engineering departments, offices, time recording systems and parking lots, as well as customer loyalty and membership cards.
The transponder provides OTP functionality, which simplifies the production process and provides increased flexibility compared to read-only devices. Customers can program the required code before shipping. As a result, the lead time and time-to-market are drastically reduced.
The device's new architecture enables outstanding read distances with different types of coils and readers. The write distance has been reduced since a short write distance is sufficient. This helps to minimize both cost and chip size. Moreover, large write distances are in many cases unfavorable due to the risk of multiple tag programming.
Further system cost reduction results from the integration of the optional trimmed 250- or 330-pF on-chip capacitors. These capacitors eliminate the need for external components, since a coil is all that is needed for a complete system, thus enabling extra-small access control systems. Since the ATA5575M1 measures only about 0.9 square millimeters, the chip can be used in almost any transponder package, including glass transponders for very small tags such as plastic key housings.
A unique ID is vital for guaranteeing access to secured areas and enabling traceability of the end product. The device's user memory contains a unique, manufacturer-programmed ID. In standard applications, the system designer can simply lock the tag and use this pre-programmed unique ID as is. In applications requiring an individual, unique ID, the designer can overwrite the existing ID by using the desired customer-specific code.
Since the ATA5575M1 is an LF device, it can be used worldwide. It is insensitive to rugged environments and can also be used under conditions that normally complicate the application of RFID devices, e.g., under water, on metal, in dirt, out-of-sight, or worn on the body.
The transponder IC supports ASK modulation and Manchester coding with a fixed bit rate of RF/64 and is designed for passive identification systems with a 100 to 150 kHz magnetic field. It can replace almost all available LF RFID read-only devices with the 'unique format'.
For further information visit www.atmel.com.