DS1977 Datasheet, PDF (1/16 Pages) Dallas Semiconductor – 32KB EEPROM iButton

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General Description
The DS1977 is a 32Kbyte EEPROM in a rugged,
iButton enclosure. Access to the memory can be
password-protected with different passwords for read-
only and full access. Data is transferred serially via
the 1-Wire protocol, which requires only a single data
lead and a ground return. Every DS1977 is factory-
lasered with a guaranteed unique 64-bit registration
number that allows for absolute trace-ability. The
durable stainless steel iButton package is highly
resistant to environmental hazards such as dirt and
shock. Accessories permit the DS1977 iButton to be
mounted on almost any object, including containers,
pallets and bags.
Applications
• Maintenance and Inspection of equipment
• Medical Information / Health
• Data Shuttle for Fleet Management and Vending
applications
Ordering Information
Part
Temp Range
DS1977-F5 -40 to 85°C
Pin-Pkg
F5 iButton
DS1977
32KB EEPROM iButton
Features
• 32KB EEPROM memory
• Durable, stainless-steel iButton package
• Built-in multi-drop controller ensures
compatibility with other Dallas Semiconductor
1-Wire net products
• Unique factory lasered 64-bit registration
number assures error free device selection
and absolute part identity
• Supports Overdrive mode
• Operating range: 2.8V to 5.25V, -40 to +85°C
Pin Configuration
5.89
0.36
0.51

© 1993
YYWW REGISTERED RR
C_xC _x
21^xx
15C000FBC52B
15C00₁0_-WFB_ireC_52B
16.25
17.35
IO
GND
F5 iButton