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how can i use AVR access extenal SRAM or SDRAM? (Read 7675 times)
DreamCat
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how can i use AVR access extenal SRAM or SDRAM?
11/28/09 at 04:19:33
 
although VMLAB can't simulate this, but I want to know how to access them, anyone can give me some tip or weblinks? :)
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ThVortex
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Re: how can i use AVR access extenal SRAM or SDRAM?
Reply #1 - 11/28/09 at 06:10:22
 
I think the easiest way would be to use a ATmega8515. It supports up to 64KB of external memory and the AVR will automatically generate all the bus signals for you. The data sheet for this AVR also has timing diagrams that show how the memory is accessed which should be useful if you want to manually generate all the signals.
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DreamCat
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Re: how can i use AVR access extenal SRAM or SDRAM?
Reply #2 - 11/29/09 at 08:20:00
 
thank you!!

i found some article about access them,  i will try it on my mega16 or mega128...
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Adamson
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Re: how can i use AVR access extenal SRAM or SDRAM?
Reply #3 - 10/14/11 at 08:52:47
 
I  would like to know how to connect external RAM to AVR ??

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Re: how can i use AVR access extenal SRAM or SDRAM?
Reply #4 - 10/16/11 at 20:14:39
 
Do you mean use one of the micros that have no internal RAM?  Normally there is a special code for such micros. something like

.MICRO "ATMEGA128_64K"

quite self explaining.....   See the help for a detailed list of the available codes
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Jewel Jubic
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Re: how can i use AVR access extenal SRAM or SDRAM?
Reply #5 - 10/22/11 at 11:49:12
 
[quote author=736E7A626E77727A757C1B0 link=1259381976/0#2 date=1259482800]thank you!!

i found some article about access them,  i will try it on my mega16 or mega128... [/quote]
From where did you find the articles???
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