Product Preview
DS1977
32KB EEPROM iButton
www.maxim-ic.com
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.
Features
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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擄C
Pin Configuration
Applications
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Maintenance and Inspection of equipment
Medical Information / Health
Data Shuttle for Fleet Management and Vending
applications
0.36
5.89
0.51
漏 1993
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16.25
RR
YYWW REGISTERED
Ordering Information
Part
DS1977-F5
Temp Range
-40 to 85擄C
Pin-Pkg
F5 iButton
IO
GND
CC
21
xx
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xx
15C000FBC52B
15C000FBC52B
1-Wire
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