# DS1973 4-kbit EEPROM iButton™

## Special Features

️· 4096 bits EEPROM
️· Overdrive mode: communication speed up to 142 kbits per second
️· 256-bit scratchpad ensures data integrity
️· Memory partitioned into 256-bit pages
️· Reduces control, address, data, and power to a single pin
️· 8-bit Family Code (23H) for communication requirements
️· Operating voltage: 2.8V to 6.0V (-40°C to +85°C)

## Common iButton Features

️· Unique 64-bit registration number (8-bit Family Code + 48-bit Serial Number + 8-bit CRC tester)
️· Multidrop controller for MicroLAN
️· Digital identification and information via momentary contact
️· Compact data carrier that stores information
️· Accessible data while affixed to an object
️· Communicates to a bus master at 16.3 kbits per second
️· Standard 16 mm diameter with 1-Wire® protocol
️· Self-aligning button shape
️· Durable stainless steel case
️· Affixed with adhesive backing, latch, or ring
️· Presence detector acknowledges reader application
️· Meets UL#913 (4th Edit.) for intrinsically safe apparatus

## Ordering Information

️· DS1973-F3: F3 MicroCan
️· DS1973-F5: F5 MicroCan

## Accessories

️· DS9096P: Self–Stick Adhesive Pad
️· DS9101: Multi–Purpose Clip
️· DS9093RA: Mounting Lock Ring
️· DS9093A: Snap–In Fob
️· DS9092: iButton Probe

## Description

️· Rugged read/write data carrier
️· Factory-lasered registration number (48-bit serial number, 8-bit CRC, 8-bit Family Code 23H)
️· Powered by 1-Wire communication line
️· Memory organized as sixteen 256-bit pages
️· Durable MicroCan package resistant to harsh environments
️· Applications: work-in-progress tracking, electronic travelers, access control

## Overview

️· Three main data components: 64-bit lasered ROM, 256-bit scratchpad, 4096-bit EEPROM
️· Data read and written least significant bit first
️· Uses the same memory chip as the DS2433-Z01