AVR-Chat

You are not alone...

http://www.sparkfun.com/commerce/news.php?id=364

It seems we go through "boom/bust" times with Atmel parts.  I love their 
processors but hate their fab - supply shortages happen every so often 
with them.

DLC

Dean Claxton wrote:
> Sorry - I should have said crystal oscillator, and I check the CKOPT box.
> The programmer (STK500) fails to read fuses etc though for these MCU's and
> will not program them.
> 
> On Tue, Jun 1, 2010 at 8:46 AM, Dean Claxton <deanclaxton@gmail.com> wrote:
> 
>> Hi David,
>>
>> External oscialltor, and I normally enable CKOPT during programming but the
>> ones that fail do not get that far - fail to read fuses or program. If I
>> replace the MCU then all good, so I assume the actual MCU is the issue.
>>
>>   On Mon, May 31, 2010 at 12:59 PM, David VanHorn <microbrix@gmail.com>wrote:
>>
>>> On Sun, May 30, 2010 at 7:32 PM, Dean Claxton <deanclaxton@gmail.com>
>>> wrote:
>>>> Hi everyone,
>>>>
>>>> I seem to have a bad batch of mega 128's in that for the current project
>>> I
>>>> am finding that 20 to 30% of the chips are not programmable, or some
>>> appear
>>>> to have faulty A/D ports.
>>> Are you running crystal oscillator with the CKOPT fuse in the default
>>> state?
>>>
>>>
>>> ------------------------------------
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>
>> --
>> Kind Regards
>> Dean Claxton
>>
> 
> 
> 

-- 
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Dennis Clark          TTT Enterprises
www.techtoystoday.com
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