DS1991 - Dallas Semiconductor

DS1991 MultiKey iButton

The DS1991 MultiKey iButton is a rugged read/write data carrier that acts as three separate electronic keys, offering 1,152 bits of secure, nonvolatile memory. Each key is 384 bits long with distinct 64-bit password and public ID fields (Figure 1). The password field must be matched in order to access the secure memory. Data is transferred serially via the 1.

Features

1,152-bit secure read/write, nonvolatile memory § Secure memory cannot be deciphered www.DataSheet4U.com without matching 64-bit password § Memory is partitioned into 3 blocks of 384 bits each § 64-bit password and ID fields for each memory block § 512-bit scratchpad ensures data transfer integrity § Operating temperature range: -40°C to +70°C § Over 10 years of data retention § § § § Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim Presence detector acknowledges when reader first applies voltage Meets UL#913 (4th Edit.); Intr.