DS1 982/5/6) @DPALLAS SEMICONDUCTOR DS 1982/5/6U UniqueWare iButton SPECIAL FEATURES 1024 bits, 16K bits or 64K bits Electrically Program- mable Read Only Memory (EPROM) communicates with the economy of one signal plus ground e Unique, factory lasered and tested 64-bit registration number(&bit family code, 36-bit serialization, 12-bit UniqueWare Identifier 5E7H, 8-bit CRC tester) as- sures absolute traceability because no two parts are alike. @ EPROM partitioned into 256-bit pages for randomly accessing pack etized data records e Each memory page can be permanently write-pro- tected to prevent tampering Deviceis an add only memory where addition al data can be programmed into EPROM without disturbing existing data Reduces control, address, data, power and program- ming sgnalsto a single pin 8-bit family code specifies device communications requirements to reader e Presence detector acknowledges when reader first applies voltage Reads over a wide voltage range of 2.8V to 6.0V from 40C to +85C iButton DESCRIPTION UniqueWare iButtons are factory programmed versions of the DS1982 (1024 bit), the DS1985 (16K bit) andthe DS1986 (64K bit) Add-Only 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 tothe DS1982,DS 1985 and DS1986 data sheets. UniqueWare Add-Only iButtons are only available pre- programmed with customer-specific and write-pro- tected data. UniqueWare data fills at least one but no COMMON iButton FEATURES Multidrop controller for MicroLAN Digital identification and information by momentary contact e Chip-based data carrier compactly stores informa- tion 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 1-Wire protocol en- sure compatibility with iButton family Button Shape is selfaligning with cup-shaped probes Durable stainless steel case engraved with registra- tion number withstands harsh environments e Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onte its rim Presence detector acknowledges when reader first applies voltage Meets UL#913 (4th edit.); Intrinsically Safe Appara- tus, Approved under Entity Concept for use in Class |, Division 1, Group 4, B, G and D Locations (applica- tion pending) more than thefirst 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. Formore details on UniqueWare andhow to setup data files, please refer to the UniqueWare Project Setup Manual, available as Application Note 99 from Dallas Semiconductor. The UniqueWare Project Setup Soft- ware is available from the Dallas Semiconductor FTP Site at ftp://tp.dal semi.com/pub/auto_id, unwsetup.exe. O81 208 1/2DS1 987/56 ORDERING INFORMATION Memory Size Family Code Package Ordering Part Number 1024 bits 88h F3 MicroGan DS1982U-F3-pppp (4 pages) F MicroGan DS1982UJ-F5-pppp 18K bits 8Bh F3 MicroGan DS1985U-F3-pppp (64 pages) F& MicroGan DS1985U-F-pppp 64K bits 8Fh F3 MicroGan DS1986U-F3-pppp (256 pages) F MicroGan DS1986U-F5-pppp pppp stands for the Project ID assigned to each individual data pattem at the time of the first order. Sample UniqueWare Data Structures SAMPLE 1: ETHERNET NODE ADDRESS Figure 1a (unused) CRC16 Company ID Value Extension ID Value Project ID Length MSB LSB | MSB LSB |MSB LSB | MSB LSB 19 bytes 2 bytes 3 bytes constant 3 bytes serialization 4 bytes 1 byte FFH assigned by IEEE constant OAH high address low address PHYSICAL ADDRESS AND DATA MAPPING Figure 1b ADDRESS OG | OB | OA | 09 | 08 | OF | 06 | O5 | 04 | 03 | 02 | O1 | 00 DATA xx | xx | ch [em] cl [hh |mmy] Il | 00 | GO | pp | pp | OA xx xx = CRC16, value depends on actual data chem cd =high, medium and low byte of the IEEE assigned Company |D hh mm Il = high, medium and low byte of the Extension ID or serialization pp pp = Project ID assigned by Dallas Semiconductor SAMPLE 2: EUI-64 FireWire NODE ADDRESS Figure 2a (unused) CRC16 Company ID Value Extension ID Value Project ID Length MSB LSB | MSB LSB | MSB LSB | MSB LSB 17 bytes 2 bytes 3 bytes constant 5 bytes serialization 4 bytes 1 byte FFH assigned by IEEE constant OCH high address low address PHYSICAL ADDRESS AND DATA MAPPING Figure 2b ADDRESS 0E |} 0D | 0C | OB | OA | 09 | 08 | OF | 06 | 05 | 04 | 03 | 02 | 01 | 00 DATA xx | xx | ch fom] cl | hh |hm | mm] mi | il | 00 | 00 | pp | pp | 0G xx xx = CRC16, value depends on actual data chem od =high, medium and low byte of the IEEE assigned Gompany |D 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 is a trademark of Apple Computer, Inc. 681208 2/2