> 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?

I haven't seen a Microchip app note, but the way a lot of people do it for
just a few lines is with a mosfet for each line. Page 43 of this Philips
document gives an example:

http://www.semiconductors.philips.com/acrobat/literature/9398/39340011.pdf

Cheerful regards,

Bob


-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist