Here. David Lissuk who maintains 1wire.org has published a list of chips identified to have the POR problem. Check over there for more details. I've snatched it from his page below:
06/02/04 - All DS18X20's B7 die chips identified List of Chips with the B7 Die 1. Read the 18X20's ROM code. Look at only the serial number portion of the ROM code: 0xCC00000SSSSSSSFF where CC is the CRC 00000 is the customer code SSSSSSS is the serial number FF is the family code DS1822 Starting ROM code of rev B7 4A00000008978A22 Ending ROM code of rev B7 3B0000000CB81922 Starting ROM code of rev C2 620000000CB81A22 DS18S20 Starting ROM code of rev B7 E0000800591D2010 Ending ROM code of rev B7 AB00080080885F10 Starting ROM code of rev C2 6200080080886010 DS18B20 Starting ROM code of rev B7 0600000054501028 Ending ROM code of rev B7 5E000000662B4F28 Starting ROM code of rev C2 21000000662B5028 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers