AVR-Chat

> -----Original Message-----
> From: Mike Murphree [mailto:mike@tropo.org] 
> Sent: Monday, 1 March 2004 12:34 PM
> To: AVR-Chat@yahoogroups.com
> Subject: Re: [AVR-Chat] Can this be done?
> 
> 
> 
> On Feb 29, 2004, at 10:11 PM, Kathy Quinlan wrote:
> 
> >
> > Can I emulate easily an EEPROM with an AVR ?
> >
> > Problem: I have an Atmel USB DEV kit, it will not program the EEPROM
> > via
> > the parallel port like it should. Atmel have taken 3 months 
> soo far and
> > still it is not resolved.
> >
> > I need to get an urgent job done, so I was thinking of 
> using an 8515 
> > or Mega128 to emulate the EEPROM and download the code via RS-232.
> >
> > The EEPROM is an AT25HP256, it is not the EEPROM that is 
> faulty, it is 
> > the GAL on the BOARD :o( (I wish they would email me the 
> code for it 
> > then I could knock something up.
> >
> > The two options I am toying with :
> >
> > #1 an AVR emulates the EEPROM
> >
> > #2 the AVR programs the EEPROM and then tri states after 
> programming 
> > so that the EEPROM is connected to the DEV board
> 
> How about using an AVR to program a SRAM, then connect that 
> to your development board?

The EEPROM is question has the ability to do block reads, and is spi, so
I can not make an SRAM do that :o(

 
> ROM emulators used to be fairly common...
> 
> Mike
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
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