¡¾×ܽ᡿NAND flash in bootloader
http://blog.chinaunix.net/u3/101728/showart.php?id=2008895
¡¾×ܽ᡿NAND flash in bootloader
created at July 8 2009
Author qkfw68
·Ç³£ÐÒÔË£¬²ÎÓëÁ˹«Ë¾Ò»¿îÒÔNAND flash×÷Ϊ´æ´¢Æ÷µÄ²úÆ·µÄ¿ª·¢¡£
NAND flash¸úÒÔÍùʹÓõÄNOR flashÓкܴóµÄ²»Í¬£º
1. ²Ù×÷·½Ê½²»Í¬:
Ó¦ÓÃÒ»¾äspecÉϵĻ°¾ÍÊÇ:
Device operations are selected by writing specific commands to the command register.
ËùÒÔ¶ÔNANDµÄÈκβÙ×÷¶¼ÊÇÒªÏÈ·¢Command¸øNANDµÄcommand interface£¬È»ºó²Å½øÐоßÌåµÄ²Ù×÷£¬Õâ¾Í¾ö¶¨ÁËCPU²»ÄÜÖ±½ÓÈ¡NANDµÄflashÉϵÄÊý¾ÝÁË¡£ÒòΪCPUÈ¥Êý¾Ý¶¼ÊÇͨ¹ýµØÖ·À´·ÃÎʵģ¬¶øNAND²»ÊÇÈ«µØÖ··ÃÎʵġ£
2. NANDµÄerase£¬programµÄËٶȱÈNOR¿ìºÜ¶à¡£µ«ÊǶÁµÄËÙ¶ÈûÓÐNOR¿ì¡£
3. NANDÓлµ¿éµÄÎÊÌâ¡£ËùÒÔÒªÓÐbad block management¡£
Îļþ:
NAND512-A2C.pdf
´óС:
1346KB
ÏÂÔØ:
ÏÂÔØ
Basic operations:
1. read
2. erase (»ù±¾µ¥Î»ÊÇblock)
3. program(»ù±¾µ¥Î»¿ÉÒÔÊÇpage)
4. bad block check
spare areaÓÃÓÚ´æ·Å±£´æÊÇ·ñÊÇ»µ¿éÐÅÏ¢µÄÊý¾Ý
·¢±íÓÚ£º 2009-07-27£¬ÐÞ¸ÄÓÚ£º 2009-08-03 10:57£¬ÒÑä¯ÀÀ115´Î£¬ÓÐÆÀÂÛ0Ìõ
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¡¾×ܽ᡿NAND flash in bootloader
created at July 8 2009
Author qkfw68
·Ç³£ÐÒÔË£¬²ÎÓëÁ˹«Ë¾Ò»¿îÒÔNAND flash×÷Ϊ´æ´¢Æ÷µÄ²úÆ·µÄ¿ª·¢¡£
NAND flash¸úÒÔÍùʹÓõÄNOR flashÓкܴóµÄ²»Í¬£º
1. ²Ù×÷·½Ê½²»Í¬:
Ó¦ÓÃÒ»¾äspecÉϵĻ°¾ÍÊÇ:
Device operations are selected by writing specific commands to the command register.
ËùÒÔ¶ÔNANDµÄÈκβÙ×÷¶¼ÊÇÒªÏÈ·¢Command¸øNANDµÄcommand interface£¬È»ºó²Å½øÐоßÌåµÄ²Ù×÷£¬Õâ¾Í¾ö¶¨ÁËCPU²»ÄÜÖ±½ÓÈ¡NANDµÄflashÉϵÄÊý¾ÝÁË¡£ÒòΪCPUÈ¥Êý¾Ý¶¼ÊÇͨ¹ýµØÖ·À´·ÃÎʵģ¬¶øNAND²»ÊÇÈ«µØÖ··ÃÎʵġ£
2. NANDµÄerase£¬programµÄËٶȱÈNOR¿ìºÜ¶à¡£µ«ÊǶÁµÄËÙ¶ÈûÓÐNOR¿ì¡£
3. NANDÓлµ¿éµÄÎÊÌâ¡£ËùÒÔÒªÓÐbad block management¡£
Îļþ:
NAND512-A2C.pdf
´óС:
1346KB
ÏÂÔØ:
ÏÂÔØ
Basic operations:
1. read
2. erase (»ù±¾µ¥Î»ÊÇblock)
3. program(»ù±¾µ¥Î»¿ÉÒÔÊÇpage)
4. bad block check
spare areaÓÃÓÚ´æ·Å±£´æÊÇ·ñÊÇ»µ¿éÐÅÏ¢µÄÊý¾Ý
·¢±íÓÚ£º 2009-07-27£¬ÐÞ¸ÄÓÚ£º 2009-08-03 10:57£¬ÒÑä¯ÀÀ115´Î£¬ÓÐÆÀÂÛ0Ìõ
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