Re: uIEC/SD in 3v3

From: Jim Brain <*brain_at_jbrain.com*> Date: Fri, 23 Dec 2011 17:07:47 -0600 Message-ID: <4EF509C3.5070704@jbrain.com> · brain_at_jbrain.com

On 12/23/2011 3:26 AM, didier derny wrote:
> Hi
>
> I'm thinking to use the uIEC/SD as "floppy" disk for my emulator on avr
> is there any chance to use the uIEC/SD in 3v3  ?
>
> thanks
>
> -- 
> didier
>
>       Message was sent through the cbm-hackers mailing list
Remove the 3V3 regulator and jumper across it.  You'd also need to 
bypass the 3 voltage dividers on the SD lines (the 3300/1800 pairs on 
the bottom, remove the 3300 and short the 1800).  That should take care 
of things, assuming AVR has 5V tolerant inputs when driven at 3V3.

Jim

-- 
Jim Brain
brain@jbrain.com
www.jbrain.com


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