Which strategies are common when it comes to interfacing
3.3V SD Cards to a 5V PIC? I need to interface both 5V
devices and an SD card over SPI. Are there any level shifters that
are meant for this purpose? The 16-bit M-chip seminar suggested
that there will be an application note on the subject. Has anyone
seen that app note yet?

Regards,
PerL

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