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Sonsivri > Electronics > AVR, 8051 Family and ARM Area (Moderator: bbarney) > how to connect external RAM to avr ?
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omidsht
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« on: June 30, 2008, 05:50:03 05:50 »
hi , i have 2 questions :
1-how to connect external RAM to AVR ?

2-how to connect external FLASH to AVR /

thanks
omid
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telyadi
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« Reply #1 on: June 30, 2008, 10:31:18 10:31 »
read AVR datasheets around page 28: mega64, mega128, mega 8515.
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pak
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« Reply #2 on: June 30, 2008, 12:57:36 12:57 »
have a search with avr forum, here is some link for you to save time
http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=65026&highlight=external+ram
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Matrixx
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« Reply #3 on: June 30, 2008, 01:13:52 13:13 »
I have try this setup some time ago. Works fine for 8535.

http://avrhelp.mcselec.com/index.html?adding_xram.htm
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cluoiset
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« Reply #4 on: June 30, 2008, 03:12:28 15:12 »
Hi!What kind of Ram do you want to use?
You can easily connect an eprom through i2c.
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sacoroxo
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« Reply #5 on: July 01, 2008, 04:34:35 16:34 »
If you are talking about STATIC RAM --> http://avrhelp.mcselec.com/index.html?adding_xram.htm
and
If you are talking about COMPACT FLASH --> http://avrhelp.mcselec.com/index.html?compact_flashcard_driver.htm

[]´s
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Codeman
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« Reply #6 on: September 05, 2008, 09:10:40 21:10 »
Be carefull. Not all the AVR's support XRAM. 8535 does. Mega64 and 128 also do. Mega32 for instance does not support XRAM.
« Last Edit: September 05, 2008, 09:13:04 21:13 by Codeman » Logged
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