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| DS1982/5/6U DS1982/5/6U UniqueWareTM iButtonTM SPECIAL FEATURES COMMON iButton FEATURES * 1024 bits, 16K bits or 64K bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground * Multidrop controller for MicroLAN * Digital identification and information by momentary contact carrier compactly stores information * Unique, factory lasered and tested 64-bit registration number (8-bit family code, 36-bit serialization, 12-bit UniqueWare Identifier 5E7H, 8-bit CRC tester) assures absolute traceability because no two parts are alike. * Chip-based data * Data can be accessed while affixed to object * Economically communicates to bus master with a single digital signal at 16.3k bits per second sure compatibility with iButton family * EPROM partitioned into 256-bit pages for randomly accessing packetized data records * Each memory page can be permanently write-protected to prevent tampering * Standard 16 mm diameter and 1-Wire protocol en* Button probes Shape is self-aligning with cup-shaped * Device is an "add only" memory where additional data can be programmed into EPROM without disturbing existing data * Durable stainless steel case engraved with registration number withstands harsh environments * Reduces control, address, data, power and programming signals to a single pin * Easily * 8-bit family code specifies device communications requirements to reader acknowledges when reader first applies voltage affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim acknowledges when reader first applies voltage * Presence detector * Presence detector * Reads over a wide voltage range of 2.8V to 6.0V from -40C to +85C * 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) 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 to the DS1982,DS1985 and DS1986 data sheets. UniqueWare Add-Only iButtons are only available preprogrammed with customer-specific 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 customer-supplied 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, unwsetup.exe. 081298 1/2 DS1982/5/6U ORDERING INFORMATION Memory Size 1024 bits (4 pages) 16K bits (64 pages) 64K bits (256 pages) Family Code 89h Package F3 MicroCan F5 MicroCan F3 MicroCan F5 MicroCan F3 MicroCan F5 MicroCan Ordering Part Number DS1982U-F3-pppp DS1982U-F5-pppp DS1985U-F3-pppp DS1985U-F5-pppp DS1986U-F3-pppp DS1986U-F5-pppp 8Bh 8Fh 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 (unused) MSB 19 bytes FFH high address 2 bytes CRC16 Company ID Value LSB MSB LSB Extension ID Value MSB LSB Project ID MSB LSB 1 byte 0AH low address Length 3 bytes constant assigned by IEEE 3 bytes serialization 4 bytes constant PHYSICAL ADDRESS AND DATA MAPPING Figure 1b ADDRESS DATA 0C xx 0B xx 0A ch 09 cm 08 cl 07 hh 06 mm 05 ll 04 00 03 00 02 pp 01 pp 00 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: EUI-64 FireWireTM NODE ADDRESS Figure 2a (unused) MSB 17 bytes FFH high address 2 bytes CRC16 Company ID Value LSB MSB LSB Extension ID Value MSB LSB Project ID MSB LSB 1 byte 0CH low address Length 3 bytes constant assigned by IEEE 5 bytes serialization 4 bytes constant PHYSICAL ADDRESS AND DATA MAPPING Figure 2b ADDRESS DATA 0E xx 0D xx 0C ch 0B cm 0A cl 09 hh 08 hm 07 mm 06 ml 05 ll 04 00 03 00 02 pp 01 pp 00 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 FireWireTM is a trademark of Apple Computer, Inc. 081298 2/2 |
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