【原创】NOR FLASH Block Unprotection

Posted on 2010-12-29 10:16 hengfeng 阅读(4828) 评论(0) 编辑收藏举报

Some NOR flash have the protection&unprotection mechanism. On power up, all blocks in the device are protected. If we want to access the protected block, the Abort could be happen. To unprotect the a block, we must write the block protection/unprotection command sequence as the following:

wptr[0] = 0xF0;
wptr[0] = 0x60;
wptr[0] = 0x60;
wptr[0x42] = 0x60;