identify Dallas chips

Dallas

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DS1287
DS1287
 
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DS1287/1187
DS1287/1187
 
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DS12885
DS12885
 
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DS1B2887
DS12B887
 
 
         
DS1187
DS1287 Realtime clock, 40 Byte RAM
DS1287A Realtime clock, 40 Byte RAM + RAM clear
DS1287/1187 Realtime clock
DS12885
DS12887 Realtime clock, 114 Byte RAM, successor of 1287
DS12887A Realtime clock, 114 Byte RAM + RAM clear
DS12B887 Realtime clock, 114 Byte RAM + RAM clear (used by ASUStek, identic to DS12887A)
DS12C887 Y2K fix

DS1385 NVRAM, RTC
DS17885 NVRAM