DS1982-F3+ (MAXIM INTEGRATED PRODUCTS)

The DS1982-F3+ is a 1Kb add only iButton in F3 MicroCan package. It is a rugged read/write data carrier that identifies and stores relevant information about product or person to which it is attached. This information can be accessed with minimal hardware such as single port pin of a microcontroller. The DS1982 consists of a factory lasered 64bit registration number that includes an unique 48bit serial number, an 8bit CRC and an 8bit family code (09h) plus 1Kb user programmable EPROM. The power to program and read DS1982 is derived entirely from 1-wire communication line. Data is transferred serially via 1-wire protocol which requires only single data lead and ground return. Alternatively, the part may be programmed multiple times with new data being appended but not overwriting existing data with each subsequent programming of device. A provision is also included for indicating that certain page or pages of data are no longer valid and have been replaced with new or updated data.