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iButton Product Training

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1 iButton Product Training
Maxim-Dallas Semiconductor May 2007

2 Introducing George Bouhasin
South American Business Development Manager – Living in Sao Paulo, Brazil July-Nov 2006 Semiconductor design engineer since 1972 Dallas Semiconductor iButton Design Manager since 1996 responsible for: Thermochron - Temperature Loggers Hygrochron - Temperature + Humidity Logger Crypto iButton RF Shelf-Life Indicator Tag Lived in BsAs during March/April 2007 Now in Santiago during May 2007 (now until May 26)

3 Dallas/Maxim Business Info
Revenue = US$1900M (FY2006). Earned $462M in FY2006 #1 in profit / revenue (~25%) for semi’s 9th market valuation of all semi’s companies Profitable every year for 19 years Maxim bought Dallas in 2001

4 Dallas/Maxim Company Dallas has 6 Business Units. Maxim has 18.
Dallas now sells over 25M iButtons per year AutoID has the highest revenue of all Dallas Business Units. Auto ID is the 6th largest within all of Dallas/Maxim There are over 140 million iButtons in use today Dallas sells iButtons through PI (Brazil) and Cika (Argentina), directly, and through ASD Channels that develop total solutions.

5 What iButtons are Available?
ROM / RAM Keyed Sensors & Loggers C = ME mod N Cryptographic Clock Monetary EPROM / EEPROM

6 What is an iButton? ID/eCash token, Datalogger & Data carrier
Smart IC chip inside a rugged stainless steel container Unique 64 bit Address for identification Stores information Varying memory capacity Various security protection mechanisms Record environmental conditions Simple 1-Wire® Touch Interface Minimum 10 year life span iButton is a smart token, much more durable and versatile than a prox card! Over 120 million iButtons have been shipped to customers worldwide!

7 What is an iButton? 64 Bit Unique and Unalterable Address
Over 280 trillion available addresses Over 45,000 buttons per person Address is factory-lasered into chip and onto can 1-Wire Protocol Only 2 contacts needed for data transfer (DATA / GND) Multiple buttons on the same wire form a 1-Wire Net Very Rugged Stainless steel “can” protects the device Withstands harsh environments water, dirt, and chemicals Wide temp range (-40C to +85C, ds1922T to 125C)

8 Where are iButtons used?

9 iButton Applications... Guard Tour
Keep track of your guard’s inspections and what is happening at your facility

10 iButton Applications... Electronic Change Purse Parking meters
Gas purchases

11 iButton Applications... Fleet Management Maintenance
User Authorization Vehicle Fueling

12 iButton Applications... use iButtons to track the amount of work
Time & Attendance – Agricultural workers use iButtons to track the amount of work completed

13 iButton Applications... Access Control
iButtons can provide secure access to many devices such as PC’s, Office Machines and Vehicles.

14 iButton Applications... Access Control
Many installations utilize iButtons as the electronic key for access to buildings, rooms, storage areas, restricted areas, etc

15 iButton Applications... Prepay Utility Meters
iButtons are used as small-change purse (token) for buying water, gas, electricity, and heat

16 iButton Applications... Electronic Change Purse
iButtons are used as debit devices for riding buses, trains, and ferries

17 iButton Applications... Health Care Systems
Personal medical information can be stored in iButton bracelets. Critical patient information can be accessed at bedside.

18 iButton Applications... Facilities Management Maintenance Inspection

19 iButton Applications Software Security
iButtons can be used for software security and version/feature control

20 iButton Applications... Key Control
Many automobile dealerships and government agencies use an iButton based system to track keys

21 Access Control - Electronic Key Competition
Prox card based entry Advantage $0.75/card cost vs $1.50/iButton Disadvantage $50/card reader vs $3/iB reader iB more durable than card iB more reliable than card Token more desirable than card to carry

22 Access Control - Mechanical Key Competition
Mechanical Keys Advantage History Disadvantage Lost key means changing the lock(s) Duplicated without your knowledge No time based entry (specific day or hours)

23 ROM iButton DS1990A Basis of all iButtons 64 Bit Address
Can be read in less than 5 ms

24 What if more than a simple id number is required?
Memory buttons Memory + time Password protected memory Data protection  SHA – 1

25 Non-Volatile RAM iButtons DS1992 - DS1993 - DS1995 - DS1996
• NV RAM Technology allows for unlimited reads and writes • 128, 512, 2K and 8K byte versions • Contains lithium battery good for 10 years • Data security is attained via hash algorithm based on data, address, and page information

26 EPROM Based iButtons DS1982 - DS1985 - DS1986 DS1982U - DS1985U - DS1986U
• Add-Only memory Unlimited reads Writes allowed until memory full • 128, 2K, and 8K byte versions • 12V needed for writing • Data retained forever • 45% - 60% cost of NVRAM • Uniqueware parts have custom data written to them at factory.

27 E2PROM Based iButtons DS1971 – DS1972 – DS1973 - DS1977
• 32, 128, 512 and 32K Byte versions • Unlimited reads • Maximum of 10,000 writes • Data retained forever • 20% cost of NVRAM • DS password protection and can perform up to 100K writes

28 Real Time Clocks DS1904 Accuracy +/ - 2 min per month at 25 C
Interval timer Cycle Counter Programmable Alarms and Expiration Date Write Protect Features 4K bits of NV RAM Arranged in 16 memory pages of 256 bits each

29 Password Protected iButtons
• DS1991 – 1K bits of NV RAM – Arranged in 3 memory pages of 384 bits each – 64 bit password to access each memory page • DS1977 – 32K bytes of EEPROM – 64 bit read/write passwords

30 SHA1 iButtons eCash and Authentication
• SHA1 is a Challenge/Response algorithm defined under ISO/IEC standard • SHA1 iButtons have onboard 512b SHA-1 engines to compute 160b Message Authentication Codes (MACs) • Secrets are write-only and have their own individual 32b read-only non rolling -over page write cycle counters • Complete debit/transaction in less than 100 ms • DS1961S – Roaming iButton – 1Kb EEPROM – Four 256b memory pages and one 64b write-only secret – Five general purpose read/write registers • DS1963S – Roaming or Coprocessor iButton – 4Kb NVRAM – Eight 256b memory pages with individual 64b write-only secrets – Device can operate as roaming iButton or as a coprocessor for a host computer/device

31 What iButtons are available?
1-Wire Net # 1-Wire Net Interface (ROM) Layer 64 bit ROM Read ROM Search ROM Match ROM Skip ROM Description DS1990A Device Device Specific Functions Device Specific Layer EEPROM 256 bit Desc. DS1971 Device 4K bit DS1973 EPROM 1K bit Desc. DS1982 Device 16K bit DS1985 64K bit DS1986 NVSRAM 1K bit Desc DS1992 Device 4K bit DS1993 16K bit DS1995 64K bit DS1996 Secure Memory 3 pwd/ 384b Desc DS1991 Device 1K E2 +SHA DS1961S 4K + SHA DS1963S RTCs/Thermal RTC Desc DS1904 Device RTC + 4K DS1994 Digital temp DS1920 Temp logger DS1921 256K bit DS1977 Temp logger DS1922 Humidity logger DS1923

32 iButton Products Quickview...
1k EEPROM with on-chip SHA-1 processor for challenge and response authentication and data writing authorization -40 to 85 1kb EEPROM with SHA-1 authentication DS1961S 0 to 125 Logs 2K time/temperature data pairs, ±1°C accuracy, 0.5C resolution, 64 histogram bins, over and under temperature alarms Thermochron time/temp datalogger DS1921G Digital thermometer, 0.5C accuracy -55 to 100 Digital thermometer DS1920 Low cost real-time clock uses a simple crystal-controlled countdown chain Real-time clock DS1904 Features Temp Range (°C) Description Part Number DS1922L DS1922T High resolution and capacity time/temp datalogger Logs up to 8K time/temperature data pairs, ±0.5°C accuracy, user selectable resolution, over and under temperature alarms, passwords protected device access Logs up to 8K time/temperature data pairs, ±1.0°C accuracy, user selectable resolution, over and under temperature alarms, passwords protected device access, extended temperature range (0C to 125C) High resolution and capacity time/temp datalogger, extended temperature range

33 iButtons Products Quickview...
Unique ID only -40 to 85 64-bit ID DS1990A 16k EPROM in bit pages, each page can be individually locked 16k EPROM DS1985 1k EPROM in four 256-bit pages, each page can be individually locked 1k EPROM DS1982 4K EEPROM 4k EEPROM DS1973 256-bit EEPROM plus a 64-bit lockable register 256 bit EEPROM DS1971 4k battery backed NVRAM with on-chip SHA-1 engine for challenge and response authentication and digital data signature for data validation, 8 secrets and 9 counters 4kb NVRAM with SHA-1 and counters DS1963S Features Temp Range (°C) Description Part Number 32Kbytes EEPROM with PW protection 32Kbytes EEPROM organized in 512 pages of 64 bytes each. Separate passwords for Read and Full access DS1977

34 iButtons Products Quickview
64kb NVRAM organized as bit pages -40 to 85 64kb NVRAM DS1996L 16kb NVRAM organized as bit pages 16kb NVRAM DS1995L Real-time clock, internal timer, cycle counter plus 4k NVRAM organized as bit pages Rea-time clock with 4kb NVRAM DS1994L 4kb NVRAM memory organized as bit pages 4kb NVRAM DS1993L 1kb NVRAM memory organized as bit pages 1kb NVRAM DS1992L Three memory pages, 384 bits each, that are protected with individual password for read and write access Password protected secure memory DS1991L Features Temp Range (°C) Description Part Number

35 iButtons Security Continuum
DS1963S DS1961S 4K NVRAM w/ SHA-1 1K EEPROM w/ SHA-1 Security Level DS1982,5,6 1/16/64K EPROM Security level DS1992,3,5,6 DS1971,3 256/4K EEPROM 1/4/16/64K NVRAM DS1990A ID 64-bit ROM Cost Cost

36 iButtons Products Quickview

37 Accessories Quickview…
DS9097U DS1402D-DR8 DS1410E DS9092L DS9490R DS1411 DS9092 DS9490B

38 Accessories Quickview
Mounts / Fobs

39 iButtons OEM Products - Mounts and Readers
Fobs Readers

40 Time and Temperature Logging
Thermochron Time and Temperature Logging

41 A Thermochron Is a Complete System
Clock ROM = Temperature Sensor Battery RAM Thermochron

42 iButton Applications... Temperature Logging (temperature vs time)
Refrigerated Trucks/Containers Shipping Verification Perishables Determine if/when a temperature problem happens

43 Thermochrons Fit Best When Refrigeration is Needed for the Transport of…
Pharmaceuticals – drugs, vaccines Fish, meats, poultry Fruits, juice, vegetables Dairy – ice cream, milk, cheese Wine, beer Bio-medical – organs, blood

44 DS1921 Thermochron Temperature Logging Logger

45 DS1921 Thermochron Mission Results Logger

46 DS1921 Thermochron Histogram Data Logger

47 Thermochrons Fit Best When…
Transport. Not fixed location No networking is practical Digital version of data is required by insurance companies or government regulations Companies want to improve quality, compare historical trends, data, store temperature records electronically High accuracy, low cost, digital solution is wanted The environment is dirty, dusty, polluted

48 Temperature Data Loggers
DS1921 Thermochron DS1921G-F5 Temperature Range -40° to 85°C Logs up to 2048 temps. with time/date stamp Accuracy +/- 1.0 C (between -20 and 40 C) Real Time Clock High / Low alarms 512 bytes of NV RAM Life span of 1 Million readings or 10 years Logger

49 DS1921H and DS1921Z High Resolution Thermochrons
DS1921H (Human) 15°C to 46°C DS1921Z (Zero) -5°C to 26°C Resolution 0.125°C Accuracy +/- 1.0°C Histogram 0.5°C Resolution

50 High End Thermochrons DS1922L and DS1922T
DS1922L (-40°C to 85°C) DS1922T (0°C to 125°C) Up to 8K data points Programmable Resolution 8-bit (0.5°C) or 11-bit (0.0625°C) Accuracy +/- 0.5°C Sample Rate 1 second to 273 hours 512 bytes of general purpose memory 64 bytes of calibration memory Onboard Password Protection

51 iButton Capsule New product - DS9107 Seawater temperature profiling
Autoclave sterilization monitoring Monitoring of beverage production Makes Thermochron water tight to >100m Fix to cable to adjust depth in liquid Response time 30s  150s.

52 DS1922L Cross-Section

53 Humidity Data Logger DS1923 Hygrochron
Logs Humidity and/or Temperature -20°C to 85°C Temperature Accuracy +/- 0.5°C Same temperature specs as DS1922 0 to 100% RH Humidity Accuracy +/- 5% typ, but higher accuracy available Hydrophobic filter protects from dirt

54 Temperature Data Loggers
DS Temperature Logger IC Same chip as in the DS1922L iButton 24 lead 300 mil SOIC package Serial interface for an analog-to-digital converter (ADC) With an external ADC and charge pump, the DS2422 can be used for many data logging functions, such as pressure monitoring, light sensor monitoring, logging thermocouple temperatures, etc.

55 Determining the Best Mission Sample Rate
Customer wants to monitor a shipment over 10 days. The ds1921 captures 2048 samples. So: 10 days/2048 samples = 7.03 min/sample

56 What Do Customers Need to Get Started with Thermochrons?
Starter kit – order part number DS1921K Thermochron ds1921G USB PC iButton adapter OneWireViewer Software – free

57 Thermochron Software Options
Free Dallas Software – iButton One-Wire Viewer Third-party (ASD) software Standard off the shelf or Customized PC and hand-held Local and network based

58 Portuarios Patagonia Norte
Eclo/TermoAR customized software to handle: temperature logs move dates truck identification producer shipping manifest In a typical fruit export season 16,000 truck routes 360,000 pallets of fruit 12,000 shipping reefer containers 140 ship voyages

59 Argentina’s Market, Termoar Position
TERMOAR – Thermologistics Pro: a Leading Case Fruit Export Industry: trucks routes and 3000 shipping containers Monitor temperatures throughout the entire export transportation process: during loading, ground transit, port receiving, sea transit and receiving at final destination. Application supported by DS1921G & Z mounted inside refrigerated trucks and shipping reefer containers The downloaded data feeds a web access Data Base Exporters, Patagonia’s Logistics Team and European Importers receive daily compliance reports Secure data management system that supports selective access by profiled characteristics Custom query support: trips/routes by facility, by date; by truck; by container, by Importer Total Visibility, from the fields in Argentina to the Supermarkets in Europe


61 Digital Thermometers DS1920 Measures current temperature
Accuracy +/- 0.5°C From -55°C to 100°C No onboard battery Sensor

62 DS1921 Thermochron Setup Wizard Logger

63 Alarm Indicators

64 THX – Thermochron/Hygrochron Alarm Watcher/Starter from Eclo Lta.
Tests for alarm flags Easy to use No need for PC or software Stop a running mission Start a new mission Replaceable AA battery

65 Palm-based Interfaces from Dallas Partners

66 Eclo ExpressThermo Mobile -Thermochron Reader
O ExpressThermo™ Mobile é a versão para PDAs que permite utilizar as funções fundamentais do sistema ExpressThermo™.

67 Reliability Stresses High Temp Storage Life 85°C, 1000 hrs
Moisture Soak 85°C/85%RH, 1000 hrs Temp Shock -40° to 85°C, 1000 cycles

68 Quality Certifications
ISO 9001, ISO 14000 NIST CEs UL

69 Chile Software and Support
Dallas Semiconductor – free standard software MCI Santiago based training and support

70 iButton Support, iButton Web Site
– Solutions Search – Code Search – Discussion Groups and FAQs – Application Notes and Data Sheets Technical Support Center Mgr

71 iButton Customer Service
Dante Verona MASD - Customer Service Representative FAX:

72 Access Control Manufacturing Partner

73 Modus-N Wants to Enter Mercosur Market
Moscow market similar to Mercosur market Security is a big concern Big city people live in high-rise apartments Price and quality important

74 Manufacturing Partner
iButton-based apartment security systems Modus-N sells 2M iButton locks/yr in Moscow Russian made - Low cost, high quality Entry into Mercosur requires local manufacture Modus wants a Mercosur partner

75 iButton Quiz Buena Suerte!

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