>Iain Whitehouse <PICLIST@MITVMA.MIT.EDU> wrote:
>
>> Talk of sunlamp erasers reminds me of once being told that OTP
>> devices (without windows !) could be erased using the magic of 'X
>> rays'.

   [snip..]

>Iain:
>
>It's true... OTP PICs (because they use the same EPROM dies as their
>windowed counterparts) can be erased with X-rays.  However, the
>technique is not a particularly cost-effective solution to your
>problem.

Does anyone have any figures for gamma ray sensitivity of PICs? I might be
using a 16C84 in an environment with lots of 511 keV gammas around. It would
be helpful to know how much shielding it would require.

If no-one knows I might just put one next to a couple of gigabeqs and find
out the hard way..

Keith.

==========================================================
Keith Dowsett         "Variables won't; constants aren't."

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