DS1994 - Dallas Semiconductor

DS1994 4kb Plus Time Memory iButton

The DS1994 Memory iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining to the object to which the iButton is attached. Data is transferred serially through.

Features

4096 bits of Read/Write Nonvolatile Memory § 256-bit Scratchpad Ensures Integrity of Data Transfer § Memory Partitioned into 256-bit Pages for Packetizing Data www.DataSheet4U.com § Data Integrity Assured with Strict Read/Write Protocols § Contains Real-Time Clock/Calendar in Binary Format § Interval Timer Can Automatically Accumulate Time When Power is Applied § Programmable Cycle Counter can Accumulate the Number of System PowerOn/Off Cycles § Programmable Alarms Can Be Set to Generate Interrupts for Interval Timer, RealTime Clock, and/or Cycle Counter § Write-Protect Feature Provides Tamper.