[Gmecm] EPROM erasing/programming

[Dan Grostick]

Here's the erasure spec for the Texas Instruments version of this chip. 
Note that power, exposure time, and distance from the chip are 
specified. Make sure the window is clean, free of glue, etc.

The recommended minimum exposure dose (UV intensity ? exposure time) is 
15-WVs/cm2. A typical 12-mW/cm2, filterless UV lamp erases the device in
21 minutes. The lamp should be located about 2.5 cm above the chip 
during erasure.

Dan

> Nevermind. Apparently 30 minutes wasn't enough. I left them in all 
> afternoon and that did the trick. Programmed and verified without 
> incident.
> Does GM use chips with higher erase energies for greater reliability? 
> I don't think my eraser is that wimpy. Why might it take so long to 
> erase those parts?
>
>
> Will
>
>