DS1986 - Dallas Semiconductor

DS1986 64-kbits Add-Only iButton

The DS1986 64-kbit Add-Only 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 microcontroller. The DS1986 consists of a factory-lasered registration number that includes a un.

Features

65536 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground § Overdrive mode boosts communication speed to 142 kbits per second www.DataSheet4U.com § EPROM partitioned into two hundred and 56 256-bit pages for randomly accessing packetized data records § Each memory page can be permanently write-protected to prevent tampering § Device is an “add only” memory where additional data can be programmed into EPROM without disturbing existing data § Architecture allows software to patch data by superseding an old page in favor of a newly progr.