DS1971

www.DataSheet4U.com DS1971 256-Bit EEPROM iButton™ www.dalsemi.com SPECIAL FEATURES § 256-bit Electrically Erasable Programmable Read Only Memory (EEPROM) communicates with the economy of one signal plus ground § EEPROM organized as one 256-bit page § 64-bit one-time programmable application register is automatically write-protected after programming § Reduces control, address, data, power, and programming signals to a single data pin § 8-bit family code specifies DS1971 communications requirements to reader § Reads and writes over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C § Economically communicates to bus master with a single digital signal at 16.3k bits per second § Standard 16 mm diameter and 1-Wire protocol ensure compatibility with iButton family § Button shape is self–aligning with cupshaped probes § Durable stainless steel case engraved with registration number withstands harsh environments § 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.); Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class I, Division 1, Group A, B, C and D Locations (application pending) COMMON iButton FEATURES § Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike § Mu...