DS1971 - 256 BIT EEPROM IBUTTON BY DALLAS SEMICONDUCTOR 

DS1971 - 256 bit EEPROM iButton by Dallas Semiconductor

Product Code: DS1971 Price: Check Latest The DS1971 has 256 bits of EEPROM that can store information about the product to which it is attached. The iButton form factor and 1-Wire interface make the information easily and quickly accessible with minimal hardware, such as one port pin of a microcontroller. The port interface provides the physical link and handles the communication protocols that enable the processor to access iButton resources with simple commands. With the right accessory—such as plastic key fobs, photo ID badges, mounts, and retainers—a DS1971 can be easily mounted on printed circuit boards, machinery, or containers, or be carried or worn by people. The 64-bit registration number provides a unique electronic address. Applications include work-in-progress tracking, time and attendance, access control, and storage of calibration constants in environmental controls and manufacturing equipment. Key Features 256-bit of EEPROM organized as one page 64-bit one-time programmable application register 1-Wire interface reduces power, control, and all data signals to a single data pin 8-bit family code specifies communication requirements to reader Voltage operating range: 2.8V to 6.0V Thermal operating range: -40°C to +85°C >10 years data retention iButton and 1-Wire are registered trademarks of Dallas Semiconductor Corporation.