Hi Jim, The signal will be 3v3 too It will come from my avr 128 A1 xplained. I'll develop the interface with an arduino a 5v Then I'll port the system in 3v3 with the avr xplained. [to avoid mixing 2 sources of problem] Thanks -- didier -----Message d'origine----- De : firstname.lastname@example.org [mailto:email@example.com] De la part de Jim Brain Envoyé : samedi 24 décembre 2011 00:08 À : firstname.lastname@example.org Objet : Re: uIEC/SD in 3v3 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 email@example.com www.jbrain.com Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2011-12-24 00:00:46
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