cbm2199e-tsop48 master control version

cbm2199e program USB disk

The whole thing is like this. I collected some USB flash drives at the local scrap recycling station. There were so many that I took them by the pound.

The main control is dm8261. I can’t find any low-end card opening jig on the Internet, and I can’t understand the tools I found.

This master control is a headache. I found mass production tools and spent a long time doing USB mapping and using administrator rights to recognize the disk. It was useless and I couldn't do it. I couldn't figure it out after setting the check mark. I saw that the chip can be removed, so I decided not to use this difficult board. I went to Anguo or Chipbond and it was not troublesome to solder the tsop.

After looking through the good board base at home, ChipBang only has two pieces left, but I have a batch of cbm2199e boards (cbm2199+cob) on hand. I think this main control can be used.

(At that time, I also saw this board on the little yellow croaker, which cost 1.5 Soft Girl Coins. I calculated the amount and looked at my wallet and decided to forget it, and then think of other ways)

At this time, I thought about whether I could draw a board and then make two pieces if necessary. Of course, it was my first time to draw a PCB. I almost understood the structure of the USB flash drive, so I tried to design it. The circuit also referred to other people's drawings. As for what chips it can support, I haven't verified it yet. I have been tinkering with it for two nights. , use automatic routing to at least create a board that looks good to you. As shown below:

I've used up my two free whores this week, and now I want the bosses to see if there are any problems. Likewise, the entire project is also attached.