This shows you the differences between two versions of the page.
|
mcmaster:commodore:ghu-01a [2013/07/31 06:11] mcmaster [Package] |
mcmaster:commodore:ghu-01a [2021/05/28 02:34] |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | {{tag> | ||
| - | |||
| - | From " | ||
| - | |||
| - | """ | ||
| - | The two GHU chips are made of a (high silicate?) epoxy I've never seen before. | ||
| - | The silicate content makes chemically decapping them extremely difficult. | ||
| - | Although I can get acid to penetrate a few mm to remove the epoxy it leaves | ||
| - | a strong skeleton behind that so far I've only been able to remove mechanically. | ||
| - | So this is where they stand: | ||
| - | | ||
| - | GHU-01A: was dipped in hot acid for a few hours (contrast to minutes for the | ||
| - | other chips) to take out a lot of the epoxy. | ||
| - | processing on it, looks like this if you are curious (picture below) | ||
| - | able to mechanically lap it to expose the chip surface but this will be somewhat | ||
| - | labor intensive (same with above if I got another copy)... | ||
| - | """ | ||
| - | |||
| - | |||
| - | ====== Package ====== | ||
| - | |||
| - | {{gallery>: | ||
| - | {{gallery>: | ||
| - | |||
| - | After soaking in acid for a few hours... | ||
| - | |||
| - | {{gallery>: | ||
| - | {{gallery>: | ||
| - | |||
| - | Label: | ||
| - | GHU-01A | ||
| - | ESR-Y | ||
| - | 7623 | ||
| - | |||
| - | |||
| - | ====== Die ====== | ||
| - | |||
| - | Not exposed | ||
| - | |||
| - | |||
| - | ====== References ====== | ||
| - | |||
| - | http:// | ||
| - | |||