Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
12/05/05 07:44
Modified:
  12/05/05 07:45
Read: times


 		 #104681 - timestamp
Responding to: ???'s previous message
Intel uses a rather weird time/lot/stamping scheme, described here:
http://www.intel.com/design/su...eneral.htm

Stepping information is contained in the lot code identifier that is in the second line marking on the topside of the chip. The second line marking is referred to as the Intel® FPO# (Finished Process Order) and is an eight digit number. The lot code identifier, Intel year, workweek of the finished product was manufactured can be viewed by referencing to the following FPO# Guide:
Save This Code
X               X       XX              XXXX
Test Site 	Year 	Work week 	Lot Code Identifier
Example: FPO# L209555A would indicate the product was produced in 2002 in workweek 9. The stepping of the product would be "A" stepping.


It means that you have to guess the correct decade, as they are produced over three decades now (provided there are no engineering samples from 1979 around)...

Jan Waclawek


List of 51 messages in thread
TopicAuthorDate
Happy birthday, 8051!            01/01/70 00:00      
   The Silver Aniversary            01/01/70 00:00      
   What?            01/01/70 00:00      
   Year 1981!            01/01/70 00:00      
   Perhaps the '51 is 26 yrs of age            01/01/70 00:00      
      announcement            01/01/70 00:00      
         Intel's Official Date            01/01/70 00:00      
            birthday            01/01/70 00:00      
      before my time !            01/01/70 00:00      
         still a mere child...            01/01/70 00:00      
            another mere child            01/01/70 00:00      
               An infant over here...@ 31 y.o!            01/01/70 00:00      
                  Another infant... @31 y.o.            01/01/70 00:00      
                     true, but            01/01/70 00:00      
      This is really a long time ...            01/01/70 00:00      
         This is really a long time ...            01/01/70 00:00      
            Re: old chips...            01/01/70 00:00      
            D87C51            01/01/70 00:00      
               IT must be 1980            01/01/70 00:00      
                  RE : 1980            01/01/70 00:00      
                     1980 is the chip mask Copyright notice            01/01/70 00:00      
                        what is chip Mask copyright?            01/01/70 00:00      
                           No            01/01/70 00:00      
                     timestamp            01/01/70 00:00      
            TS80C31X2            01/01/70 00:00      
   Chip mask protection            01/01/70 00:00      
      US Only Again??            01/01/70 00:00      
         general copyright act?            01/01/70 00:00      
            International Law            01/01/70 00:00      
      That was their downfall, BTW            01/01/70 00:00      
         history            01/01/70 00:00      
   Intel inside            01/01/70 00:00      
      I am not surprised            01/01/70 00:00      
         Had Intel taken more interest in 8051            01/01/70 00:00      
         Me neither            01/01/70 00:00      
      Memories 8051 Design            01/01/70 00:00      
         Another good article            01/01/70 00:00      
         Intel gives up mcus gradually?            01/01/70 00:00      
   Congratulation Philips            01/01/70 00:00      
      Good Article .. DataBooks            01/01/70 00:00      
      how much is it Philips?            01/01/70 00:00      
         Me too            01/01/70 00:00      
   80c51 history            01/01/70 00:00      
   I have found            01/01/70 00:00      
      go to this page            01/01/70 00:00      
         yes, you catched it!            01/01/70 00:00      
      nice piece            01/01/70 00:00      
   Lindy barcode reader            01/01/70 00:00      
      appnote?            01/01/70 00:00      
         its just usefull            01/01/70 00:00      
      Generic 8051 board at large            01/01/70 00:00      

Back to Subject List