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Re: [AVR-Chat] Fuses: Permanently disable spi/isp

2007-10-23 by Jim Wagner

On Tue, 23 Oct 2007 16:32:33 +0200 (CEST)
 "Manne Tallmarken" <mannet@kth.se> wrote:
> Is it possible to permanently disable all kinds of
> read/write operations to the flash?
> 
> Regards,
> 
> Manne
> 

I don't believe that you can, PERMANENTLY. If the device
can be parallel programmed, the fuses can be over-ridden by
erasing the flash (or something like that). Also, devices
with SPM operation can write to flash, I believe, if it is
run from the proper code space no matter what the fuses are
set to.

That is my understanding of such things.

Jim Wagner
Oregon Research Electronics, Consulting Division
Tangent, OR, USA
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