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06/02/04 - All DS18X20's B7 die chips identified
Thanks to Brian D. Hindman, and Mike Mitchellat Dallas Semiconductor we nowhavethe completelist of serial numbers that identifiy B7 die DS18X20s. |
Technical Corner
You will find technical reference here |
1-Wire Chip Problems/Information
In this section we hope to document 1-wire chip problems and solutions |
Dallas seminar briefings
Gain a little insight into future plans from Dallas Semiconductor |
Thermodata Pty Ltd
Thermodata temperature loggers, software and customized solutions. Distributor for the Link and related products in Australia and New Zealand. Solutions for business users of Thermochrons.They also do custom 1-Wire apps for the Palm and PC |
Marc’s Geeky Bits
Selling a 1-Wire LCD, PIR Sensor some 1-wire components and carrier boards that can be used for 1-wire components. Based in Canada. |
AAG Automatización Aplicada a Gasolineras
Manufacturer of the 1-Wire Weather Instrument (Wind Speed, Wind Direction, Temperature)), and other fine sensors, control modules, actuators, bus masters and adapters. |
IBECS - Integrated Building Environmental Communications System
Integrated Building Environmental Communications System (IBECS) A Department Of Energy project that uses 1-wire |
8.6: The Hotplate Snowgauge
R.M. Rasmussen , J. Hallett , R. Purcell , J. Cole , and M. Tryhane NCAR/RAP, Boulder, CO 2Desert Research Institute, Reno, NV |
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We decided to break the update list in two to make it easier to see what's new.
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Dallas has released the new DS2482-800 1-wire master (as mentioned previously as coming in the Dallas seminar briefings, (Link available in the Reference Materials, 1-wire Articles section on this site). Check the News section for more details.
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Dallas has come through to us with the promised list of DS18X20 B7 chips. So you can now check your DS18S20's and other versions as well as the DS18B20's. The C2 version (replacement die unit) will fix this bug but will be exactly the same as the current die otherwise. Expect shipments of the new version (C2) to begin roughly at the beginning of September 2004. (Oh well, we had hoped for the new front end to be added to the chips, .... At least you can plan ahead and place your orders now... and get back to business) Our continued thanks to the good Dallas folks for their continued updates... We suggest software coders might want to alter their software to insure best operational abilities in all cases. There are a lot of B7's out there..
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Warning! It appears Buffalo Run Enterprises run by Alan Heaberlinis, has left several people without their mony or parts and no refunds. Web site appears to be non-functional.
- At the request of Dallas Semiconductor, we have removed the document AN247.pdf. titled "DS18x20 EEPROM Corruption Issue". Dallas has decided this should have been a "internal confidental document" and would rather not have it available on the web. The document explains the issue and documents workarounds. If you have further questions or need to locate this document, you can contact Dallas at thermal.support@dalsemi.com to ask for it. It is also available from their distributors.
- Added the iButton Software company Thermodata Pty Ltd, they also sell some hardware so check them out. .
- Added a new 1-wire manufacture with Marc's Geeky Bits
- Added a new entry to the 1-Wire Chip Problems/Information section concerning the DS1921L The DS1921M was offered as a temporary solution to the lack of availability of the DS1921L in November of 2002. Of interest to software developers.
- Added a new section called 1-Wire Chip Problems/Information to the reference materials section to help keep track of problems with 1-wire chips that may have occured in the past. If you have details about past problems (not just about deliveres of chips), then send us a copy of the documentation so we can post it here for everyone. We've move the recent DS18X20 problems details there and added some new information from Dallas about recognizing DS18B20 B7 chips..
- Added links to the new 1-wire discussion groups lists and updated Dallas information on the lists.
- Added a Email site update notification feature, use the subscription button to register for this service .Get a Email anytime their is significant changes to this web site.
- Added new AAG AAG Electronica TAI8558 release info, see News Items
- Added links to various IBEC information under 1-Wire Control Projects
- Added a link to Paul Alfille Command and Family Code table
- Add a link to a new 1-wire article in the May 2004 Sensors mag. "Power over the 1-wire net"
- Added Electronic Visions Hobby Boards Web Site to 1-wire manufactures
- New 1-wire component the 1024-Bit 1-Wire EEPROM DS2431 (See News Items)
- Added Dallas seminar briefings from December 2003
- Add Russian site Elin to manufactures list
- Updated AAG manufacture information (See the current and future product list!)
- Added a News area (See the latest Dallas Semiconductor news... here)
- Take a look in the experimental 1-wire sites for Chris Nafis's 1-Wire snow sensor!
- Added much more reference data to Reference materials section
- Additions throughout...Magazine links, Stevenson screens, etc.
- Major addition of Atmospheric Electricity (Lightning) section
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