DIP28 -> DIP23 Adapter or Circuit

[Tomasz]

Borg:
Yes!!! You're Great! My camera's batteries' out of order... no photo, sorry.
Any details about Your "adapter" at attached photo, please?

Rainbow:
There are 28DIP flashroms, are'n they? I can't remember type any of Atmel's, but there are they!
Can Uniflash flashs EEPROMS - when I will set "12V" jumper for flash in BIOS socket..? Will it be possible even if chip for flashing has no identyfication with Uniflash?
Best regards,
Tomasz, POLAND.

[Borg Number One]

Tomasz.

It is an adapter to make it easier to (ex)change E-/EP-/FLash-ROMs.

The Testsocket makes all possible.
It is simply how the Testsocket works, but it is hard to explain.

The testsocket has opening/port(they consist of two metal dies).
(View fro mabove)

Code: Select all

      32     31     30  ...17
      |  |   |  |   |  |...|  |
      -------------------
      |  |   |  |   |  |...|  |
      1      2      3      16
      ++
   ++-++
   ++-++


      32    31    30  ...17
      |.|   |.|   |.| ...|.|
      -------------------
      |.|   |.|   |.| ...|.|
      1     2     3      16
      ++
++----++
++----++
    |
    |
This is the lever.

("|")= metal dies.

The pins of the EPROM are plugged between |  | .
If the EPROM is plugged ("|. |") and I move down the lever then the |. | close to |.| 

[Borg Number One]

@Tomasz:

Code: Select all

DIL/DIP28      DIL/DIP32         DIP28 ((E)/EPROM/Flashrom/socket)=>DIP32 socket

                       (VCC)
               1  O   O  32           1      |===>32
                  O   O               2      ||==>31
 1 O   O 28       O   O           1   3   28=|||=>30
 2 O   O 27       O   O           2=> 4   27==||  29
 3 O   O 26       O   O           3=> 5   26===|  28
 4 O   O 25       O   O           4=> 6   25=====>27
 5 O   O 24       O   O           5=> 7   24=====>26
 6 O   O 23       O   O           6=> 8   23=====>25
 7 O   O 22       O   O           7=> 9   22=====>24
 8 O   O 21       O   O           8=>10   21=====>23
 9 O   O 20       O   O           9=>11   20=====>22
10 O   O 19       O   O          10=>12   19=====>21
11 O   O 18       O   O          11=>13   18=====>20
12 O   O 17       O   O          12=>14   17=====>19
13 O   O 16       O   O          13=>15   16=====>18
14 O   O 15    16 O   O  17      14=>16   15=====>17

@DIP32
2, 3, 28, 29 are not connected.

This cannot be correct.

Pin 26&27 of the DIP 28 must be connected with pin28&29.
Compare these datasheets:
http://atmel.com/dyn/resources/prod_doc ... oc0321.pdf
http://atmel.com/dyn/resources/prod_doc ... oc0014.pdf

Finally this should be the perfect adapter, is not it?:

Code: Select all

DIL/DIP28      DIL/DIP32          DIP28 ((E)/EPROM/Flashrom/socket)=>DIP32 socket

                       (VCC)
               1  O   O  32          |=>1      |=>32
                  O   O              |  2      |  31
 1 O   O 28       O   O            1=|  3   28=|  30
 2 O   O 27       O   O            2==> 4   27===>29
 3 O   O 26       O   O            3==> 5   26===>28
 4 O   O 25       O   O            4==> 6   25===>27
 5 O   O 24       O   O            5==> 7   24===>26
 6 O   O 23       O   O            6==> 8   23===>25
 7 O   O 22       O   O            7==> 9   22===>24
 8 O   O 21       O   O            8==>10   21===>23
 9 O   O 20       O   O            9==>11   20===>22
10 O   O 19       O   O           10==>12   19===>21
11 O   O 18       O   O           11==>13   18===>20
12 O   O 17       O   O           12==>14   17===>19
13 O   O 16       O   O           13==>15   16===>18
14 O   O 15    16 O   O  17       14==>16   15===>17

@DIP32
2, 3, 28, 29 are not connected.

[Rainbow]

You can read any (E)(E)PROM with UniFlash - just use -force parameter to select any chip with matching size.