DS18X20 B7 Chip Die Problems - All chips identified

Thanks to Brian D. Hindman, and Mike Mitchell at Dallas Semiconductor we now has the complete list of serial numbers that identifiy B7 die DS18X20's.

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