hello,
I would like to know how to connect my sd-card(16MB) connector has one pic18f2520 - 10Mhz - SPI mode
help me please !
sorry for my bad english but I am french.
Common mistakes are forgetting to include a pull-up resistor on DO out from the card, incorrect level translation between the 5 volt pic and the 3.3 volt card, insufficient power supply to handle the transient (100mA+) draw from the 3.3 volt rail. You need filtering capacitors and power supply decoupling capacitors as close as practical to the card. I generally use a 22uF tantalum and 0.1uF ceramic for this purpose in addition to large capacitors before and after the regulators.
16MB is small for an SD card - are you sure it is not an MMC card? _________________ Regards, Andrew
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