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DS1971 iButton

256-Bit EEPROM iButton®
Datasheet : DS1971.pdf
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