I think I had tried SD card on a fast processor like this one, and it worked with no trouble.
64mhz MCU with slower spi_rate should work the same as a slow cpu with high spi_rate. Matt. On Nov 20, 12:55 pm, Sebastien Lelong <[email protected]> wrote: > Hi guys > > SD card strikes back :) > > I'm now running my SD Card sample successfully on another Bee[z] board, > powered by PIC18F25K22 @3V3. So far so good, MCU is running @16MHz, > everything's fine. Now, when using PLL, I can make it run @64MHz (!). > Trouble is my SD card sample doesn't work anymore... I tried all possible > SPI clock > (SPI_RATE_FOSC_4, SPI_RATE_FOSC_16, SPI_RATE_FOSC_64, SPI_RATE_TMR), none > works when using 64MHz clock. > > Is there a limit about MCU clock with SPI ? > > Cheers, > Seb -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
