DS1973

The DS1973 4-kbit EEPROM iButton is a rugged read/write data carrier that identifies and stores relevant information about the product or person to which it is attached. This information can be accessed with minimal hardware, for example a single port pin of a micro-controller. The DS1973 consists of a factory lasered registration number that includes a unique 48bit serial number, an 8bit CRC, and an 8bit Family Code (23H) plus 4096 bits of EEPROM. The power to program and read the DS1973 is derived entirely from the 1Wire communication line. The memory is organized as sixteen pages of 256 bits each. The 64bit registration number provides a guaranteed unique identity which allows for absolute traceability. Data is transferred serially via the 1Wire protocol which requires only a single data lead and a ground return. The durable MicroCan package is highly resistant to harsh environments such as dirt, moisture, and shock. Its compact buttonshaped profile is selfaligning with cupshaped receptacles, allowing the DS1973 to be used easily by human operators or automatic equipment. Accessories permit the DS1973 to be mounted on printed circuit boards, plastic key fobs, photoID badges, ID bracelets, and many other objects. Applications include workinprogress tracking, electronic travelers, access control and storage of calibration constants.