> > I am working with a micro controller based board design. We need to
> > power this board from another micro controller based board that has
> > regulated 3.3V power output connector. These two boards will be
> > connected by a one foot cable for power and UART. The micro in the
> > board we are designing needs 3.3V for its peripherals and SDRAM and
> > 1.2V for the core.
>
> > Is it OK to give regulated 3.3V from another board directly (using
> > adequate bypass capacitors) for this micro's peripheral and SDRAM and
> > through an LDO or switching regulator outputting 1.2V to the core? The
> > 3.3V supply will have source approx 500ma current which is sufficient
> > for my board.
>
> Does the source have enough current ability?
> How long are the wires?
>
>
>
>
>
> > - bhav
Wires are one foot long and yes, the source can supply the required current.