Temperature iButton鈩?/div>
www.dalsemi.com
SPECIAL FEATURES
摟
Digital thermometer measures temperatures
from -55擄C to +100擄C in typically 0.2
seconds
摟
Zero standby power
摟
0.5擄C resolution, digital temperature reading
is two鈥?complement of 擄C value
s
摟
Access to internal counters allows increased
resolution through interpolation
摟
Reduces control, address, data, and power to
a single data contact
摟
8-bit device-generated CRC for data integrity
摟
8-bit family code specifies DS1920
communications requirements to reader
摟
Special command set allows user to skip
ROM section and do temperature
measurements simultaneously for all devices
on the bus
摟
2 bytes of EEPROM to be used either as
alarm triggers or user memory
摟
Alarm search directly indicates which device
senses alarming temperatures
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
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
TM
protocol ensure compatibility with iButton
family
摟
Button shape is self-aligning 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)
F3 MICROCAN
TM
3.10
0.36
0.51
c
1993
F5 MICROCAN
TM
5.89
0.36
16.25
0.51
c
1993
16.25
YYWW REGISTERED RR
YYWW REGISTERED RR
A0
10
17.35
20
10
17.35
000000FBC52B
000000FBD8B3
DATA
GROUND
DATA
GROUND
All dimensions are shown in millimeters
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