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communication between SD card and microcontroller

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Arrowspace

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I want to communicate with SD card using dspic microcontroller, my microcontroller work on TTL logic and SD card on CMOS(3.3 V), which lever shifter IC should I use for it?
 
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Kurenai_ryu

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well you can try:

resistor divider

resistor and zener diode

mosfet adapter

It all depends on your bus speed... (capacitances and that stuff) and the voltage levels of your 5V microcontroller (if the MISO input is schmitt trigger and you use a pasive converter (resistor) you could face problems)

read this:

http://jamesreubenknowles.com/level-shifting-stragety-experments-1741
http://www.rocketnumbernine.com/2009/04/10/5v-33v-bidirectional-level-converter
http://www.bb-elec.com/Products/Ser...al-Converters/Baud-Rate-Converter-RS-232.aspx


finally you can buy something like this:
http://yourduino.com/sunshop2/index.php?l=product_detail&p=246
 

Arrowspace

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Thanks for providing this useful information
 

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