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DS1993 Datasheet

  • DS1993

  • 1kb/4kb Memory <u>i</u>Button

  • 23頁

  • ETC

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DS1992/DS1993
1 kbit/4-kbit Memory iButton
TM
DS1994
4-kbit Plus Time Memory iButton
TM
www.iButton.com
SPECIAL FEATURES
4096 bits of read/write nonvolatile memory
(DS1993 and DS1994)
1024 bits of read/write nonvolatile memory
(DS1992)
256-bit scratchpad ensures integrity of data
transfer
Memory partitioned into 256-bit pages for
packetizing data
Data integrity assured with strict read/write
protocols
Contains real time clock/calendar in binary
format (DS1994)
Interval timer can automatically accumulate
time when power is applied (DS1994)
Programmable cycle counter can accumulate
the number of system power-on/off cycles
(DS1994)
Programmable alarms can be set to generate
interrupts for interval timer, real time clock,
and/or cycle counter (DS1994)
Write protect feature provides tamper-proof
time data (DS1994)
Programmable expiration date that will limit
access to SRAM and timekeeping (DS1994)
Clock accuracy is better than 鹵2 minute/
month at 25擄C (DS1994)
Operating temperature range from -40擄C to
+70擄C
Over 10 years of data retention
Data can be accessed while affixed to object
Economically communicates to bus master
with a single digital signal at 16.3 kbits per
second
Standard 16 mm diameter and 1-Wire
protocol ensure compatibility with iButton
family
Button shape is self-aligning with cup-
shaped probes
Durable stainless steel case engraved with
registration number withstands harsh
environments
Easily affixed with self-stick adhesive
backing, latched by its flange, or locked with
a ring pressed onto its rim
Presence detector acknowledges when reader
first applies voltage
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
F5 MICROCAN
5.89
0.36
0.51
c
1993
16.25
YYWW REGISTERED RR
AF
04
17.35
000000FBC52B
COMMON iButton FEATURES
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
Multidrop controller for MicroLAN
Digital identification and information by
momentary contact
Chip鈥揵ased data carrier compactly stores
information
1 of 23
DATA
GROUND
All diminsions shown in millimeters.
ORDERING INFORMATION
DS1992L-F5
DS1993L-F5
DS1994L-F5
F5 MicroCan
F5 MicroCan
F5 MicroCan
102199

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