256-Bit EEPROM iButton鈩?/div>
www.dalsemi.com
SPECIAL FEATURES
摟
256-bit Electrically Erasable Programmable
Read Only Memory (EEPROM)
communicates with the economy of one
signal plus ground
摟
EEPROM organized as one 256-bit page
摟
64-bit one-time programmable application
register is automatically write-protected after
programming
摟
Reduces control, address, data, power, and
programming signals to a single data pin
摟
8-bit family code specifies DS1971
communications requirements to reader
摟
Reads and writes over a wide voltage range
of 2.8V to 6.0V from -40擄C to +85擄C
摟
Economically communicates to bus master
with a single digital signal at 16.3k bits per
second
摟
Standard 16 mm diameter and 1-Wire
protocol ensure compatibility with iButton
family
摟
Button shape is self鈥揳ligning with cup-
shaped probes
摟
Durable stainless steel case engraved with
registration number withstands harsh
environments
摟
Easily affixed with self-stick adhesive
backing, latched by its flange, or locked with
a ring pressed onto its rim
摟
Presence detector acknowledges when reader
first applies voltage
摟
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
摟
Unique, factory-lasered and tested 64-bit
registration number (8-bit family code + 48-
bit serial number + 8-bit CRC tester) assures
absolute traceability because no two parts are
alike
摟
Multidrop controller for MicroLAN
摟
Digital identification and information by
momentary contact
摟
Chip-based data carrier compactly stores
information
摟
Data can be accessed while affixed to object
ORDERING INFORMATION
DS1971-F3
DS1971-F5
F3 MicroCan
F5 MicroCan
F3 MICROCAN
TM
3.10
0.36
0.51
c
1993
F5 MICROCAN
TM
5.89
0.36
0.51
c
1993
16.25
16.25
YYWW REGISTERED RR
YYWW REGISTERED RR
54
14
17.35
D4
14
17.35
000000FBC52B
000000FBD8B3
DATA
GROUND
DATA
GROUND
All dimensions shown in millimeters.
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