AVR-Chat

----Original Message----

From: AVR-Chat@yahoogroups.com
[mailto:AVR-Chat@yahoogroups.com] On Behalf Of David
VanHorn Sent: 04 November 2009 15:25 To:
AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] prevent
attiny2313 flash corruption 

> Sorry!   Insuficient caffiene errror.
> I was thinking EE, but still most of the same issues
> apply. 
> Writing while the power is failing is a bad idea, as is
> writing while 
> the power is coming up.
> Sometimes, a power supply can have a glitch in its rise,
> such that the 
> power goes invalid again, before it rises all the way.

I presume you're talking about bootloaders here where the flash is being
modified by the software.

Is there a known corruption problem in a simple application which is not
modifying its own flash?

-- 
Tim Mitchell

On Wed, 4 Nov 2009, Tim Mitchell wrote:

> I presume you're talking about bootloaders here
> where the flash is being modified by the software.

No, actually it's just an ATtiny which will be
programmed, fuses set, inserted into a circuit
and shipped. From that point on, nothing is ever
written to persistent memory (EPROM/FLASH)
anymore, but it'd be nice if things keep "just
working". Any protective measures needed for
that?

Best,
Marc

Nope, just feed it good vcc, clock, and reset, and don't zap the pins.

-- Sent from my Palm Prē
Marc R.J. Brevoort wrote:

On Wed, 4 Nov 2009, Tim Mitchell wrote:



> I presume you're talking about bootloaders here

> where the flash is being modified by the software.



No, actually it's just an ATtiny which will be

programmed, fuses set, inserted into a circuit

and shipped. From that point on, nothing is ever

written to persistent memory (EPROM/FLASH)

anymore, but it'd be nice if things keep "just

working". Any protective measures needed for

that?



Best,

Marc





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