Clarification on Atmega128

Started by Tamilmaran S ●July 21, 2005

Hi all,
      We are using atmega128 for one of our project. I heard that it is
a 8 bit microcontroller, ok its accumulator and its data bus are 8 bit
width. Then what about is address bus, is it also 8 bit width? Because
for this 8 bit it can address only up to 2^8 = 256 location. Then how
it can address 4096 SRAM (4K) and 131072 Flash (128K). Can anybody
clear me on this doubt? Thank you

With regards
marans

Reply by Richard ●July 21, 20052005-07-21

"Tamilmaran S" <tamilmaranz@gmail.com> wrote in message
news:1121928219.888153.123050@z14g2000cwz.googlegroups.com...
> Hi all,
>       We are using atmega128 for one of our project. I heard that it is
> a 8 bit microcontroller, ok its accumulator and its data bus are 8 bit
> width. Then what about is address bus, is it also 8 bit width? Because
> for this 8 bit it can address only up to 2^8 = 256 location. Then how
> it can address 4096 SRAM (4K) and 131072 Flash (128K). Can anybody
> clear me on this doubt? Thank you
>
> With regards
> marans
>


http://www.atmel.com/dyn/resources/prod_documents/doc2467.pdf

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