DS1995 Datasheet, PDF (1/2 Pages) Dallas Semiconductor – 16-kbit Memory iButton

19-4895; Rev 8/09
SPECIAL FEATURES
 16384 bits of read/write nonvolatile memory
 256-bit scratchpad ensures integrity of data
transfer
 Overdrive mode boosts communication to 142
kbits per second
 Memory partitioned into 256-bit pages for
packetizing data
 Data integrity assured with strict read/write
protocols
 Operating temperature range from -40C to
+70C
 Over 10 years of data retention
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-based data carrier compactly stores
information
 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
DS1995
16Kb Memory iButton
 Presence detector acknowledges when reader
first applies voltage
F5 MICROCAN
5.89
0.51

16.25
D0
 _0A
000000FBC52B
1-Wire^
17.35
DATA GROUND
All dimensions are shown in millimeters.
ORDERING INFORMATION
PART
TEMP RANGE
PIN-
PACKAGE
DS1995L-F5+ -40C to +70C F5 MicroCan
+Denotes a lead(Pb)-free/RoHS-compliant package.
EXAMPLES OF ACCESSORIES
DS9096P
Self-Stick Adhesive Pad
DS9101
Multi-Purpose Clip
DS9093RA
Mounting Lock Ring
DS9093F
Snap-In Fob
DS9092
iButton Probe
iButton DESCRIPTION
The DS1995 Memory iButton operates nearly
identically to the DS1996. The main differences
are: 16 Kbits of memory organized as 64 pages of
32 bytes and a family code of 0A hexadecimal. For
further details, refer to the DS1996 data sheet.
iButton and 1-Wire are registered trademarks of Maxim Integrated Products, Inc.
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