The ATA5575 is the latest generation of Microchip's IDIC® chips (IDentification IC). It is based on the design of the successful ATA5577 with the same high level of performance. The portfolio is composed of two different versions, addressing the two main LF RFID markets. The ATA5575M1 targets access control applications with a dedicated unique format. In the past, factory-preprogrammed R/O tags have been used for that purpose. New market trends require more flexibility in the way this number is composed, and a faster time to market. These requirements are perfectly met by the ATA5575M1. The ATA5575M2 is designed for animal identification (FDX-B and FDY-A modulation according to ISO 11784 and 11785). It also covers FSK access control applications.