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mcmaster:iffy_6502 [2018/03/21 20:57] – [Table] mcmastermcmaster:iffy_6502 [2021/05/28 02:34] (current) – external edit 127.0.0.1
Line 1: Line 1:
 +Chips from Tube Time (Eric) / EMSL (Windell) => TTEMSL
 +
 {{:mcmaster:iffy_6502:img_20180221_161041.jpg?600|}} {{:mcmaster:iffy_6502:img_20180221_161041.jpg?600|}}
 {{:mcmaster:iffy_6502:img_20180221_161143.jpg?600|}} {{:mcmaster:iffy_6502:img_20180221_161143.jpg?600|}}
  
-Above: Eric numbering / original lot+Above: TTEMSL numbering / original lot
  
 {{:mcmaster:iffy_6502:img_9679_2018-02-26.jpg?600|}} {{:mcmaster:iffy_6502:img_9679_2018-02-26.jpg?600|}}
Line 27: Line 29:
 S1, S2, and S5, and S6 read relatively close. However, I see some issues such that S2 is out of spec on pin 2, 9 and 23. Possibly indicates ESD damaged part? The other 3 are close enough that differences could just be due to manufacturing variances. S1, S2, and S5, and S6 read relatively close. However, I see some issues such that S2 is out of spec on pin 2, 9 and 23. Possibly indicates ESD damaged part? The other 3 are close enough that differences could just be due to manufacturing variances.
  
 +====== Package thickness ======
 +
 +Observation: S1 was milled to about 0.043". Typically this is a safe depth, with wires not appearing until at least 0.050" down. However S1 had the wires exposed at this point
 +
 +Theory: packages were sanded prior to remarking. Maybe this caused the depth creep up
 +
 +Result: probably not. Only very slight amounts were removed. While this may have contributed slightly, the wires and die are likely just higher (maybe unusually thick paddle). They do have gold leadframe which is uncommon
 +
 +Are:
 +  * 1: 0.149
 +  * 2: 0.149
 +  * 3: 0.152
 +  * 4: 0.150
 +  * 5: 0.153
 +  * 6: 0.145
  
 ====== Decap ====== ====== Decap ======
Line 34: Line 51:
 Above: black top showing. Other chips had this too Above: black top showing. Other chips had this too
  
-^ Sample  ^ Page                           ^ Package                                     ^ Package label  ^ Die                                    ^ Die label  ^ Note          +^ Sample  ^ Page                           ^ Package                                     ^ Package label  ^ Die                                    ^ Die label    ^ Note                                                                          
-| 1                                      |                                                            |                                        |                          +| 1                                      |                                                            |                                        |              Minor endmill damage                                                          
-| 2       | [[mcmaster:mos:6502d|Link]]    | {{:mcmaster:mos:6502d:pack_top.jpg?300}}    |                | {{:mcmaster:mos:6502d:die.jpg?300}}    | 6502D                    +| 2       | [[mcmaster:mos:6502d|Link]]    | {{:mcmaster:mos:6502d:pack_top.jpg?300}}    |                | {{:mcmaster:mos:6502d:die.jpg?300}}    | MOS\\ 6502D                                                                                
-| 3       | [[mcmaster:mos:6502d-2|Link]]  | {{:mcmaster:mos:6502d-2:pack_top.jpg?300}}  |                | {{:mcmaster:mos:6502d-2:die.jpg?300}}  | 6502D      | Counterfeit? +| 3       | [[mcmaster:mos:6502d-2|Link]]  | {{:mcmaster:mos:6502d-2:pack_top.jpg?300}}  |                | {{:mcmaster:mos:6502d-2:die.jpg?300}} MOS\\ 6502D  | Counterfeit?\\ Severe corrosion during decap, suspect poor overglass quality  | 
-| 4                                      |                                                            |                                        |                          +| 4                                      |                                                            |                                        |              Severe damage from laser                                                      
-| 5                                      |                                                            |                                        |                          +| 5                                      |                                                            |                                        | 3020\\ 0202                                                                                
-| 6                                      |                                                            |                                        |                          |+| 6       [[mcmaster:rockwell:6502f|Link]]                               |                                             R6502F         |                                        | R650                                                                                       |
  
  
mcmaster/iffy_6502.1521665873.txt.gz · Last modified: 2018/03/21 20:57 by mcmaster