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010700
SPECIAL FEATURES
1024 bits, 16K bits or 64K bits Electrically
Programmable Read Only Memory
(EPROM) communicates with the economy
of one signal plus ground
Unique, factory lasered and tested 64bit
registration number (8bit family code, 36bit
serialization, 12bit UniqueWare Identifier
5E7H, 8bit CRC tester) assures absolute
traceability because no two parts are alike
EPROM partitioned into 256bit pages for
randomly accessing packetized data records
Each memory page can be permanently
writeprotected to prevent tampering
Device is an "add only" memory where
additional data can be programmed into
EPROM without disturbing existing data
Reduces control, address, data, power and
programming signals to a single pin
8bit family code specifies device
communications requirements to reader
Presence detector acknowledges when reader
first applies voltage
Reads over a wide voltage range of 2.8V to
6.0V from 4
0
C to +8
5
C
COMMON iButton FEATURES
Multidrop controller for MicroLAN
Digital identification and information by
momentary contact
Chipbased data carrier compactly stores
information
Data can be accessed while affixed to object
Economically communicates to bus master with
a single digital signal at 16.3k bits per second
Standard 16 mm diameter and 1Wire protocol
ensure compatibility with iButton family
Button Shape is selfaligning with cup
shaped probes
Durable stainless steel case engraved with
registration number withstands harsh
environments
Easily affixed with selfstick 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 (application pending)
iButton DESCRIPTION
UniqueWare iButtons are factory programmed versions of the DS1982 (1024 bit), the DS1985 (16K bit)
and the DS1986 (64K bit) AddOnly iButtons, respectively. They differ from the regular devices in their
custom ROM family codes (see Ordering Information) and the UniqueWare Identifier 5E7 in place of the
upper 12 bits of the standard serialization field. For technical details on the devices please refer to the
DS1982, DS1985 and DS1986 data sheets.
UniqueWare AddOnly iButtons are only available preprogrammed with customerspecific and write
protected data. UniqueWare data fills at least one but no more than the first four pages of a device,
depending on the length of the customersupplied data. This leaves up to three (DS1982U), 63
(DS1985U) or 255 (DS1986U) memory pages available for programming in the application.
For more details on UniqueWare and how to set up data files, please refer to the UniqueWare Project
Setup Manual, available as Application Note 99 from Dallas Semiconductor. The UniqueWare Project
Setup Software is available from the Dallas Semiconductor FTP Site at
ftp://ftp.dalsemi.com/pub/auto_id
, file name "unwsetup.exe".
DS1982/5/6U
UniqueWare iButton
TM
www.dalsemi.com
DS1982/5/6U
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ORDERING INFORMATION
Memory Size
Family Code
Package
Ordering Part Number
1024 bits
(4 pages)
89h
F3 MicroCan
F5 MicroCan
DS1982UF3pppp
DS1982UF5pppp
16K bits
(64 pages)
8Bh
F3 MicroCan
F5 MicroCan
DS1985UF3pppp
DS1985UF5pppp
64K bits
(256 pages)
8Fh
F3 MicroCan
F5 MicroCan
DS1986UF3pppp
DS1986UF5pppp
pppp stands for the Project ID assigned to each individual data pattern at the time of the first order.
Sample UniqueWare Data Structures
SAMPLE 1: ETHERNET NODE ADDRESS Figure 1a
CRC16
Company ID Value
Extension ID Value
Project ID
Length
(unused)
MSB
LSB MSB
LSB MSB
LSB MSB
LSB
19 bytes
FFH
2 bytes
3 bytes constant
assigned by IEEE
3 bytes serialization
4 bytes
constant
1 byte
0AH
high address
low address
PHYSICAL ADDRESS AND DATA MAPPING Figure 1b
Address
0C
0B
0A
09
08
07
06
05
04
03
02
01
00
Data
xx
xx
ch
cm
cl
hh
mm
ll
00
00
pp
pp
0A
xx xx = CRC16, value depends on actual data
ch cm cl = high, medium and low byte of the IEEE assigned "Company ID"
hh mm ll = high, medium and low byte of the "Extension ID" or serialization
pp pp = Project ID assigned by Dallas Semiconductor
SAMPLE 2: EUI64 FireWire
TM
NODE ADDRESS Figure 2a
CRC16
Company ID Value
Extension ID Value
Project ID
Length
(unused)
MSB
LSB MSB
LSB MSB
LSB MSB
LSB
17 bytes
FFH
2 bytes
3 bytes constant
assigned by IEEE
5 bytes serialization
4 bytes
constant
1 byte
0CH
high address
low address
PHYSICAL ADDRESS AND DATA MAPPING Figure 2b
Address
0E
0D
0C
0B
0A
09
08
07
06
05
04
03
02
01
00
Data
xx
xx
ch
cm
cl
hh
hm
mm
ml
ll
00
00
pp
pp
0C
xx xx = CRC16, value depends on actual data
ch cm cl = high, medium and low byte of the IEEE assigned "Company ID"
hh hm mm ml ll = high, medium and low byte of the "Extension ID" or serialization
pp pp = Project ID assigned by Dallas Semiconductor
FireWire
TM
is a trademark of Apple Computer, Inc.
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