Hi All,

I tried to identify components for my GPS logger with voice recording.
I wanted to use the small new PIC18F2553 uC.
However I was very surprised, that I'm not able to use both SPI (for SD/MMC
card) and EUSART (for reception of data from the GPS module) simultaneously,
as they share the same pin: RC7/RX/DT/SDO .
All the chips: PIC18F2458/2553/4458/4553 and the old
PIC18F2455/2550/4455/4550 have the same problem.

Well, I know, that the SPI protocol have no special timing requirements, and
I can do SPI "by hand" on almost any pin. But when I want to record the voice
simultaneously, possibly perform some trivial DSP (e.g. some kind 
of compression when converting the 12-bit voice data to the 8-bit stored on
SD/MMC) this solution is a little problematic :-(.

Do I really have to use ATmega? (however ATmega32U4 is still in "preliminary"
stage, so I'll lose easy USB connectivity).
-- 
Regards,
Wojtek
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