AVR-Chat

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On 2 Jul 2005 at 2:03, M Habib wrote:

>         how can i excecute a program written on the sram using 
>         AT90S8515 or ATmega8515?

	The AT90S8515 doesn't allow that.
 
> also how can i use the spm instruction to write one word 
> only in the flash mem. using the ATmega8515??

	Reading the datasheet, perhaps?

>
> > also how can i use the spm instruction to write one word
> > only in the flash mem. using the ATmega8515??
>
>         Reading the datasheet, perhaps?

Specifically the SPM instruction.

--- In AVR-Chat@yahoogroups.com, Dave VanHorn <dvanhorn@d...> wrote:
> 
> >
> > > also how can i use the spm instruction to write one word
> > > only in the flash mem. using the ATmega8515??
> >
> >         Reading the datasheet, perhaps?
> 
> Specifically the SPM instruction.

A careful reading of the procedure for using the SPM instruction will 
probably reveal that you cannot write just one word.  Rather, you must 
write a page at a time.  However, you can effect the change of a 
single word by reading the data for a page, changing the word and 
writing the page back.

Remember, datasheets are your friend.  Google, too.

Are these actually in the wild yet or just lab-rats?

Yes, they exist in engineering samples ... pre-production is eminent.

Jim

----- Original Message ----- 

From: "Don" <don@led.com.au>
To: <AVR-Chat@yahoogroups.com>
Sent: Saturday, July 02, 2005 7:39 PM
Subject: [AVR-Chat] 100 pin AVR's


> Are these actually in the wild yet or just lab-rats?
> 
> 
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> Yahoo! Groups Links
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