i didn't find anything useful about the BF or the chip you mentioned,
Note sure what you're missing there - links are given in the post I mentioned.
SF3301 chip thread:
https://bitcointalk.org/index.php?topic=985400.0Sales at dualminer.com:
http://www.dualminer.com/SFARDS-SF3301-40-chip-package_p_34.htmlYou do have to be willing to read
That's a completed miner (ASIC in your terms), based on HashFast's old Golden Nonce chip. That's a pretty old chip, four dies on a single substrate, BGA package, bit of a nightmare (needs some serious cooling) but their hardware's been popping up somewhat cheap after they had to liquidate assets (bankruptcy).
but let's not get out of topic here ,
how to use the BF864C55 ? i mean for mining? do i need an arduino? or a raspberry PI ??
Step 1: You'll need to integrate it on a board. Again, see the NanoFury project for a sample design for a single chip.
Step 2: Raspberry Pi, BeagleBone Black, laptop, desktop, etc. should all work with the result of that integration if you set it up right and either leveraged an existing mining protocol (e.g. the old Icarus one) or wrote your own for mining software such as cgminer/bfgminer.