http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T22:18:34-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t723.html 2009-01-07T22:18:34-08:00 Hi to all actually i m programming SD card in phillips p89c669 controller but i m unable to initialize the card. I m programming it in SPI mode , please suggest me a suitable way. http://www.8051projects.net/forum-t723.html 2009-01-07T22:18:34-08:00 Ajay did you see the sample codes from AVR freaks? they have very good code with the documentation how and what they did. i found this technical note from Philips NXP website.hope this will be helpful.. its a pdf..AN10406_3.pdftell me if this is useful! they have explained everything about MMC. http://www.8051projects.net/forum-t723.html 2009-01-07T22:18:34-08:00 prashants hi i am also interfacing the sd card to atmega 16 microcontroller ,so i want to write the data & read the data from it , can anybuddy tell me about that? http://www.8051projects.net/forum-t723.html 2009-01-07T22:18:34-08:00 Ajay you can use the AVRlib it got APIs to write and read in SD/MMC also IDE. you can download AVRlib from here...AVRlib 2007-03-31Documentation can be found here.. : Documentation